Noraxon U.S.A, Inc. myovideo USER GUIDE v3.6 P 4408 as of July 2014 i

Transcription

1 USER GUIDE v3..6 P 4408 as of July 2014 i

2 Copyright, 2014, Noraxon U.S.A. Inc. No part of this document may be copied, photographed, reproduced, translated, or reduced to any electronic medium or machinereadable form without the prior written consent of Noraxon U.S.A. Inc. Noraxon is a registered trademark of Noraxon U.S.A. Inc. All rights reserved. All other company and product names contained herein may be trademarks or registered trademarks of their respective companies and are sole property of their respected owners. P 4408 as of July 2014 ii

3 Table of Contents Section 1: Introduction to the Technology Description... 1 Section 2: Set Up Software Installation... 2 Hardware Setup... 2 Device Configuration Settings... 4 Section 3: Software Navigation Overview The Main Navigation Bar... 8 Main Operation and Instruction Bar... 8 Tool Bar... 9 Local Menu Element Controls... 9 Section 4: Home Menu Introduction Select a Module Select or Create a Subject Select or Create a Configuration Right Side Tool Bar Section 5: Create a new MyoVideo Measurement Configuration Select or Create a Subject Create or Edit a Measurement Configuration Measurement Options Section 6: Measurement Menu Introduction...16 Preview Screen...16 Recording Measurements...17 Screen Layouts...17 Measure Menu Functions...21 Section 7: Database Menu Introduction...24 Right Tool Bar...26 View Records...31 Section 8: Viewer Menu Introduction...32 Signal Processing...36 Video Analysis...36 Video Options...51 Marker Menu...52 Edit Menu...52 Edit Channel Properties...58 Signal Bars...59 P 4408 as of July 2014 iii

4 Multiple Video Camera Recordings...60 Two Video Record Comparison...61 Section 9: Report Menu Introduction...63 Reporting System...63 Report Preview and Editing...68 Appendix A: Report Descriptions 76 Appendix B: Multi Device Configurations and Master Sync System 80 Appendix C: Master Sync and Connect Schemes for with Logitech 81 Appendix D: Master Sync and Connect Schemes for with Optitrack 83 Appendix E: Reflective marker Placement 87 P 4408 as of July 2014 iv

5 Section 1: Introduction to the Technology Description is a video analysis and recording module operated in the multi device platform software MR3. It can be used stand alone or as a multi device component in conjunction with other devices, such as EMG inside modules like myomuscle. All modules share some basic menu operations which are explained below. applications can be combined at any time with any of the other 3 available modules of the Noraxon MR3 multi device concept: P 4408 as of July

6 Section 2: Set Up Software Installation Before you start the MR3 software please connect all devices to your PC that you plan to use with the software. Insert the installation USB card or use the MR3 download file and start the installation with Noraxon.mr.3.x.x.exe (x is the latest version release number). Follow the steps in the Installation Wizard menu and click Finish to close the Installation Wizard routine. A new Icon will appear on your desk top: Double click on the icon to start the MR3 software. Hardware Setup At the very first program start, MR3 will operate an automatic hardware detection run by prompting this screen: Make sure that all purchased devices are connected to the PC via USB and properly installed in the Windows operating system. Click OK to run the hardware detection. You can manually repeat this hardware detection and hardware setup routine at any time. P 4408 as of July

7 After starting the program click on command line to open the right side tool bar. (upper right corner) in the green In the newly opened tool bar click on setup menu. too open up the Hardware Device The Hardware Setup menu will automatically insert any devices connected to the computer, including any webcams that may be part of the computer. Click on if you would like to remove any inserted devices from your configuration. The Hardware Setup menu may also show some Player devices which are virtual demonstration drivers to simulate an EMG, myomotion or pressure plate recording without connected hardware. Click on to removee it from your configuration. Click to integrate the devices you plan to use with the MR3 modules. The next screen shows a list of all selectable devicess or preconfigured devices. Please note that only connected devices (recognized by Windows operating system) will be listed here: P 4408 as of July

8 An icon for the device will appear in Hardware Setup. Note: If two or more webcams are used, they will both be displayed with the same device name, but the software will rename them once they are inserted into the Hardware Configuration. If you plan to use and synchronize your device together with other devices like 3D kinematic system (myomotion), EMG and other biomechanical sensors (myomuscle) or instrumented pressure treadmill (myopressure), a sync light is necessary for exact synchronization. Please refer to Appendix B, the hardware installation menu and the hardware manual for more details on multi device setups. Note: To operate multi device setups Noraxon s MyoSync device is strongly recommended. More information on the Master Sync concept can be found in Appendix B. Confirm by pressing OK. This will bring the user back to the Hardware Setup menu. Review everything and press OK to return to the Home screen. Many MR3 interface functions are shared between editions and devices. Some major interface elements are introduced in the next chapter. Device Configuration Settings Once the device has been selected and the OK button has been hit a Settings Menu will pop up. Different camera systems will have different setups. Please see the hardware manual for your specific camera system setup. The recommended setup is format Video MJPEG with a resolution of 800x600. P 4408 as of July

9 Note: This menu is not available for the Optitrack V100:R2, its menu has fewer settings. Typically, you will only adjust the cameraa name and pixel/compression format and use the other settings only as needed. All other settings are optional adjustments and not needed for regular video recording tasks. For auto tracking of illuminated markers some additional adjustments are needed which are explained in the chapter on Auto Marker tracking in Appendix C. General description of the other settings: Rotate Hardware Sync Software Sync FPS Exposure Gain If the camera is physically rotated from landscape to portrait orientation, the video can be rotated clockwise or counter clock wise to adjust in the software. This setting is needed if regular USB webcams are used together with High Speed video cameras. It requires a special sync cable thatt is shipped together with the High Speed module. This offset correction switch may be needed in case there is a video delay between cameras and associated devices like EMG. The Frames Per Second switch can be used to force the maximum frame rate. Thiss option can only be used for certain camera types like the Logitech c920, Optitrack V100, or DV video camcorders. The exposure (shutter time) needs to be set to lower values in case auto tracking of markers is to be used (see below). Used to increase or decrease the overall light brightness. P 4408 as of July

10 White balance Saturation Focus LED Intensity Corrects the color shading between the red and blue color spectrum. Adjusts the overall color saturation of video. The default automatic focus can be set to manual values. Only available for the Optitrack V100:R2: Adjusts the IR LEDs in the camera. The cameras run continuously (0 7) or in a strobe mode (8 15). Once the device settings are correct, the user should press OK. This will return the user to the Hardware Setup menu. Now, the video system s icon should be present. If there is ever a need to change the device settings, the settings box can be reached by highlighting the device and clicking the Configure Device button in the Hardware Setup menu. Hardware Profiles It is possible to save various hardware profiles. This allows the user to have specific hardware setups and device configurations saved. This is especially useful if myomotion is used and the user does not have a full body, 16 sensor system. The hardware profile allows the user to save different device configurations such as upper body, lower body, etc. P 4408 as of July

11 To save a hardware profile first open the Hardware Setup as described above. The Hardware profile will automatically open in the Default profile. The default profile cannot be saved and will change as devices are inserted and deleted. Click on the New button in the upper right corner to create a new savable hardware profile, or click on the drop down arrow to select a previously saved hardware profile. Selecting the New button will open the New Profile dialogue box where the user can create a profile name to save the hardware profile. Selecting Clone Settings allows the user to copy the devices and device configurations currently in the Default hardware profile. P 4408 as of July

12 Section 3: Software Navigation Overview The Main Navigation Bar On top of the software screen there is a software navigation bar that visualizes the work flow of a typical recording from the Home screen (start) to Report (analysis): The tab/menu you are currently operating in is highlighted with an orange color and bright background. This navigation bar allows you too directly jump into a certain menu if needed. Note: Some menus can only be accessed from the previous one in work flow, e.g. a record can only be viewed (Viewer Tab) if a record was selected in the previous Database Tab. Main Operation and Instruction Bar Indicated by a green color, this bar shows at the top of the software screen, underneath the navigation bar. On the left side of this bar is the main operation button in bright green. MR3 is designed so that by pressing this button you automatically operate the next logical step in the work flow. Pleasee read the short instructional text to the right of the operation button to learn which steps or optionss are available or necessary to continue to the next step. Operation button Instructional text Help Button P 4408 as of July

13 Tool Bar MR3 offers a set of optional tools to adjust or fine tune certain selections, operate menu specific options or apply optional processing steps too your records. At any time the Tool Bar (located on the right side of the screen) can be opened or closed with the Hide Tools or Show Tools button on the right side of the green instruction bar. The question mark? to the left of the tool bar is the Help button. When pressing this, a pop up dialogue box will appear with information about the currently displayed page of the software. Local Menu Element Controls Each menu consists of a set of menu elements, which are equipped with a set of local control tools. You can use these local tools to perform element specific selections and operations: P 4408 as of July

14 Section 4: Home Menu Introduction The Home screen menu consists of 3 sub steps that allow you to select a measurement module (in this case ), and select or create a subject and measurement configuration. To do this, simply perform steps 1 through 3 on the Home screen: Select a Module MR3 is multi functional software that can operate numerous sensors and devices. Each of these can function as a stand alone device or module or be used in combination with each other. Step 1 allows you to select the module you would like to use for the measurement. Modules include; myomuscle for EMG recording, myomotion for 3D motion analysis, myopressure for integrated foot pressure analysis and for 2D motion capture. Modules become available once they are purchased and unlocked by the user. For this section select as the measurement module. P 4408 as of July

15 Select or Create a Subject Each record will be saved under the subject. There are an unlimited number of subjects that may be saved to the MR3 database. Subjects may be selected from the drop down menu in step 2. Next to the drop down menu is also the button to create a new subject. Note: Subjects are saved under Projects. Projects can only be changed or selected under the Database menu. Select or Create a Configuration Next the user will select, edit, or create a new configuration. Please see the next section for details on Measurement Configurations. Right Side Tool Bar Each tab will have different tools available in the tool bar. For the Home tab, the tools are described below. Actions Setup This takes the user into the hardware setup. The hardware setup screen is described in the hardware manual. Update License Allows the user to update their software in case they purchase additional modules or features. Configurations Rename Allows the user to rename the highlighted software configuration. Delete This will delete the highlighted configuration. P 4408 as of July

16 Section 5: Create a New Measurement Configuration Introduction ) Click on the module icon 2) Select an existing subject from the database list (use small pull down arrow to see full subject list) or create a New Subject. 3) Select an existing configuration or click Edit Configuration or New Configuration. Note: Clicking New Configurationn will bring users to the measurement setup menu. New measurement configurations aree stored under the selected module under a user defined file name and will be listed under the configuration menu. Clicking Edit Configurations allows already existing configurations to be modified. 4) Click on the green configuration have been chosen. button once thee correct module, subject, and Create or Edit a Measurement Configurationn After clicking New Configuration a small dialog will appear prompting you to enter a name for the new measurement configuration: P 4408 as of July

17 Enter any suitable file name and confirm it with Ok. The measuremen nt setup screen will appear: 1 All measurement/recording devices thatt were inserted in the initial Hardware Setup dialog menu are listed on the right hand side in Available Devices. Click on the devicee icon and mouse drag it to the section 1. Devices in your configuration. When done, the settings screen will appear: P 4408 as of July

18 The screen is separated into two sections, the left side s cameraa preview picture and the two step menu setup scheme on right side. Step one, Devices in your configuration, has alreadyy been discussed. Each device that is dragged into this section can have its settings editedd in step two. Video Camera Settings Defined by the hardware setup menu located in the Home Tab. Experts can fine tune the camera settings in case the recommended standard settingss do not fit to the environment or given task. Logitech Cameras (and most other webcams): Optitrack Cameras: P 4408 as of July

19 Measurement Options In the right side tool bar are the Measurement Options including: Recording Options, Feedback Options, and Online Processing. These options are meant for use with myomotion and myomuscle but do not apply to. P 4408 as of July

20 Section 6: Measure Menu Introduction After selecting an existing configuration or creating a new configuration continue to the measurement screen by clicking the Start Measure Button in the green operation line: Preview Screen The system is now ready to take measurements; the incoming video data will be visualized on the screen. Video Recording Preview once an existing measurement configuration is selected or a new one is created, MR3 will continue to the video preview screen: If two or more cameras are used, their images will be portrayed side by side, or stacked depending on how many cameras are used. Recording Measurements The system is now ready to take measurements. Any movement made by the test subject will be shown in the screen in real time. P 4408 as of July

21 To start a recording press Record, perform the desired activity and press Stop: The Save Data dialog will appear and a Name can be entered in first line: The second line Subjects allows the user to change, create or confirm the previously selected subject name. After pressing Ok the record can be reviewed in the record Viewer. To perform the next measurement with the same subject just click the Measure tab in the top navigation bar again. Make sure that the pressure platform is unloaded at the start of each Measure. Screen Layouts If the only device in the configuration is the device, the camera image will be the only thing visible during the measurement. In the case of multi device setups, e.g. myopressure with myomuscle (EMG and mobile sensor recording), (2 camera video recording) or myomotion (3D motion analysis of angles) it may be helpful to use the customizable screen layout system of the Measure menu. P 4408 as of July

22 Generally, each device will have its own specific register tab: In the above example, the recorded images are shown in the Video/Animation tab while EMG from the myomuscle Module is shown in the EMG Device tab: This separation is helpful to manage the many signal windows created by the use of full body or multi device measurements (e.g. 16 EMG channels are added). Any signal from any signal tab section can be clicked and dragged into the new user view tab labeled with +. For example, the signals from a specific muscle can be moved into a new user tab. Once a signal is present, the New User View tab will automatically be renamed Tab 1. Right click using the mouse allows the user to rename the view. A Rename card dialog box will appear: P 4408 as of July

23 This screen layout system allows the user to create as many signal selections or new user views as needed. A similar system is available for the Video/Animation window: Double clicking on a given signal name moves this signal into a pop up window: The small red X button in the upper right corner of the window title line will close the pop up window and move back the signal to its original tab location. If you hold the CTRL key and click on a second channel title from the source tab you can insert more channels to the pop up window: P 4408 as of July

24 If you click on the channel name and drag it over another channel, they are shown in an overlay mode: This and other pop up Signal/Animation windows can be moved to a second monitor, if one is available. Whenever a certain screen/window layout arrangement is established you can Save it in the Screen Layouts section of the right tool bar. Click on Save and enter a suitable name for your channel layout configuration and it will appear in the upper list section: P 4408 as of July

25 In case you want to use a user defined layout double click on its name in this selection list. Other default options in Screen Layouts are these buttons: All in one tab all signals from one tab will be shown (again) on one shared screen Show by group each device and signal category is shown in separated tabs (this is the default) Delete will delete a screen layout configuration from the selection box Note: The channel layout which was setup in the Measurement menu will be the same in the Viewer menu. However, all layout and channel arrangement functions are still available in the Viewer menu as well. Measure Menu Functions Local Amplitude Zoom Function During measurement and recording the given amplitude (Y axis) scaling can be changed by using the local red zoom plus/minus buttons: The timeline (X axis) also has local scaling options. The plus and minus will increase or decrease the length of time displayed in the signals window while the equal sign returns the window to a 10 second time display. P 4408 as of July

26 Actions Tool Bar The right tool bar of the Measurement menu includes a section titled Actions. This tool section is only meant to be used for myomotion and myomuscle signal screens and is not active (or needed) for pressure distribution animation in myopressure or video recordings in. Measurement Setup directly goes back to measurement setup/configuration screen. Please see below for more details about this setup and options. Calibrate Baselines this option is only needed if EMG and other biomechanical sensors from the Telemyo G2 or DTS system are included in the recording. For such signals it may be required to correct zero line offset shifts via recalibration Marker Menu With this menu you can create marker names and manually mark or comment events in your recording. Once recording has started, clicking the button, under the Markers tool bar, will place a marker in the record (displayed in the Viewer menu) as well as provide an audio cue. The default marker name is Marker. If you want to create a new marker name, double click on the Marker name entry box and overwrite the existing one, click the green check mark button, and this new marker name will be inserted to the list of available marker labels: P 4408 as of July

27 To use a marker name from the list double click on it (don t use the green check mark button). A successfully placed marker is indicated by a short tone. To delete a marker from the marker label list, click on the red X right side to each marker name. P 4408 as of July

28 Section 7: Database Menu Introduction As indicated by its name the Database tab manages all functions around data file management, like selection, editing, exporting and importing ) Lists Project s Subjects 2) Lists Project s Records 3) Local List Functions 4) Right Tool Bar Menu 1 & 2 List sections The screen is split into two sections, reflecting the organization of records into Subjects (left list section) and Records (right list section) stored under a given subject name: 3 Local List Functions Below each list you find a set of list functions: P 4408 as of July

29 Edit/Rename Delete Quick Search Sort Info Here you can change the subject name and add additional information associated to your subject such as subject properties, comments or pictures. Here you can delete your subject and all records stored under this subject Note: deleted subject data and records cannot be restored. If you have a very large database it may be helpful to use a search function to quickly find a certain subject This entry allows you to sort your database by first or last name in ascending or descending order If this button is pressed/box is checked, the subject properties window with Basic info, Subject form, Comments and associated pictures is permanently visible The same set of list functions is available for the records list screen as well. The record Info button shows important record property details: Basic Muscles/Devices Comments Picture/Video Meas. Options Processing History A summary of basic record properties like file name (editable), size, date, duration etc. Only for EMG and sensor records, shows a list of selected sensors Each record can receive a record specific comment which can be created or reviewed here This info tab is very helpful if you have recorded data together with video. The first picture of the video is shown here to help you find and identify a record Not activated yet In case any signal processing was applied to your original record, all processing steps are documented here P 4408 as of July

30 4 Right Tool Bar Menu If you click the button on the right side of the green instruction bar, the Database Tool bar will show up. To remove the tool bar, click. Besides the Subjects Database there is another database section called Normative Database It contains all normative data records that were compiled via the Add to Normative function within the Report Menu (see chapter 9: Report Menu). All database functions described below are also available for normative records. Note: The normative sample file Natural floor gait reference curve is not meant to be used for any medical diagnosis or similar purposes. It only serves as an educational example on how to use or operate normative data. Right Tool Bar Projects and Data Hierarchy MR3 s database system is organized in hierarchy levels: Projects Subjects Records Project is the highest database level. Projects can include an unlimited number of Subjects, which can include an unlimited number of records. P 4408 as of July

31 The drop down arrow to the right of the project name allows you to switch to another project. If you want to createe a new project, or rename or deletee an existing project, click on More. New creates a new project Edit renames a project Delete deletes all project data, subjects andd records within a selected project Attention: Carefully use the Delete function. Projects that are deleted cannot be restored Choose actions In the Choose actions section you can create a New Subject and Import or Export subjects and records. P 4408 as of July

32 Import Records You can import records from external locations such as a previous version on your PC, backup data from external hard drives or network folders: To import or multi device records select Import, then and set a path to the external directory (e.g. a net drive or external hard disk directory). Other import options include: P 4408 as of July

33 Import from external location Import video file Import MRXP data Import record from text file Import of C3D file Import record from Noraxon Datalogger (*.tm2) Import Zebris16 Data Import MyoPressure data Import record from MyoMotion Datalogger (*.mml) Import entire MR3 projects, subjects or records saved to an external location Note: It is possible to import into the directory the records were originally saved in, or into the currently opened project Externally recorded video files in avi format can be imported Import of records from the former MyoResearch XP version Imports Ascii or txt formatted records. Attention, only MR3s ascii data or similar arrangements are supported (see export file to ascii) C3D format used by most Motion capture companies is supported and allows for import of kinematic, force and EMG data recorded there Data logged files from the Telemyo G2 and Telemyo DTS belt receiver can be imported here Imports pressure data recorded with Zebris old 16Bit systems (FDM, FDMT) Data recorded with the myopressure Software from Zebris can be imported here Imports data recorded with myomotion inertial sensor data logger Export Records You can export records to external locations, the records of another subject, to a text file, and to an excel file: P 4408 as of July

34 The following menu dialog allows you to select projedcts, subjects and records: Just use the check or uncheck controls to select the desired subjects and records shown in the list and click. Export subjects to external location Export records to another subject Export records to another project Export record to text file Export to C3D format Export record to Excel (.slk) file Export to MatLab format Exports your chosen subject from to another location outside of MR3 Allows you to copy a record from one subjectt directory to another inside your version Allows you to copy a subject(s) and/or record(s) from one project directory to another inside the database Numerical Data (signals) can be exported to ascii compatible format Numerical Data (signals) can be exported to C3D format Numerical Data (signals) can be exported to excel compatible format Numerical Data (signals) can be exported to Matlab format Attention: Do NOT use the Windows Explorer to movee or send MR3 data files directly from their data directory on hard disk: you will lose important index filess and data may become unreadable. To copy data always use the Export/to external location function of the database/right tool bar! P 4408 as of July

35 View Records To view a record from the database, simply click on the record to highlight it and double click tab. on the record or click on the button to open the record in the Viewer Dual Record Comparison MR3 view the gives the user the option to view two records simultaneously in the Viewer tab. To two records in the Viewer screen at the same time, highlight both records and hit button. 2 1 Note: Both records must be from the same project and subject in order to be viewed simultaneously in the Viewer menu. The records will then appear in the Viewer menu side by side. Here, the records may be synchronized and viewed at the same time. P 4408 as of July

36 Section 8: Viewer Menu Introduction Each successfully stored recording will automatically be loaded to the record Viewer. Data will be presented in the same channel layout scheme that was used for recording. The main goal of the Viewer menu is to inspect the quality and details of a record, apply signal processing, place markers (for analysis period definition) and prepare the record for further analysis (=> Report). As an overview the following menu elements are available: Channels and view functions 2. Time line 3. Playback controls 4. Tool bar menus Note: With multi device setups the record Viewer can show signals from all measured devices plus video, pressure and motion animation avatars. The addition of multi device modules also adds functions to the right side tool bar, e.g. based video recording adds two more sub menus; Video analysis and Video Options. P 4408 as of July

37 1) Channel View and Functions The Viewer menu presents all recorded data exactly in the same screen layout arrangements as they were measured. Because of the multi device nature of MR3, numerous signal, animation video and biofeedback screens can occur which require a sophisticated screen element management. As described in the measurement menu/section screen layouts, in the case of multi device setups each device will be shown in its own tab section. The following channel display, zoom and overlay functions are available: Local X and Y axis +/ buttons allow for zooming operations of amplitude and time Double click on channel name maximizes a channel to a pop up window CTRL Double click adds a second or third (.) channel to the pop up window Pop Up windows can be moved to a second monitor Left mouse drag of the channel name to another signal creates an overlay of both signals Any amount of signals can be mouse dragged to a new tab Any given screen layout arrangement can be stored as a configuration available in the right tool bar (See the Measurement chapter for more detailed descriptions and examples) 2) Time Line The time line indicates the cursor and marker time positions, marker labels and the location of the analysis periods (see the Report chapter for details). 3) Video/Avatar Play/Replay Controls Play 1x Arrows Play to Video File Plays all visible videos on the screen at the same time Plus and minus signs control the play speed, 1x means the original speed, + increases, decreases the play speed Their function follows standard video control functions: Go to the beginning of the video clip, go one picture back, one picture forward or go to the end of the video clip This is MR3s video/screen recorder function and allows you to record any video, screen animation, time synchronized measurement signals, etc. (e.g. EMG, auto tracked angles) to an.avi file. A small menu dialog allows you to define file destination directory, video size, frame rate and compression factor: P 4408 as of July

38 ATTENTION: Do not operate any other action while the screen recorder is running! Recording intervals can be limited to a blue highlighted area in the time line (see below). To select a section within the video time line, click on the beginning of the desired recording interval, then hold down the shift key and click a second time at the end of the interval. You can also accomplish this by clicking on the beginning of the desired interval and dragging over the timeline until the endd of the desired recording interval. Add to Report Whenever you want to insert a video picture (with or without angle drawings) to the report,, press this button. This point of interest (POI) based analysis allows you to watch a video, stop at any point of interest, analyze it (see below) and click Add to Report to mark it for the videoo analysis report (only available with the module). Any POI created by this function receives a Report marker label in the marker/time line shown below. Note: The points of interest are necessary for the report. P 4408 as of July

39 Report Marker Linee The time line shows a seconds based time scale and a marker label line. MR3 operates a complex system of markers related to biomechanical event triggering, manual marker labeling or POI based ( Add to report ) labeling. Any created marker line is shown here and can be used to identify events, motion phases, interesting analysis sections, etc. 4) Right Tool Bar Options The tool bar offers a set of optional sub menus, by default the Play mode is active. This is the standard mode to visually inspect, zoom and record. Click on the desired sub menu to activate it and use more sub menu functions. Signal Processing (optional) A collection of standard processing operations like signal rectification, smoothing, digital filtering, amplitude normalization, etc. Video Analysis Consists of a set of tools for analyzing video images Video Options Consists of a set of video adjustmentt tools Marker Menu (optional) Several modes for marker labeling and auto marker settings for trigger and angle channels. Note: Markers can be manually set in the signalss by double clicking the left mouse button. P 4408 as of July

40 Signal Processing Not needed for video recordings! The signal processing menu is nearly identical to the Online processing menu of the measurement menu. It has some additional processing options, but the main operation of functions is similar. Signal processing is a collection of commonly used processing modes for biomedical signals. These processing options are most commonly applied to raw EMG signals. Video Analysis The Tool bar on the right side of Viewer Tab consists of two major functional tools, Video Analysis and Video Options: Video Analysis is the main video analysis tool for and consists of a set of angle and distance drawing tools, a text label function, a distance measurement tool, crosshair function and trajectory analysis based on auto tracked angles or single markers. All drawings, except Trajectories, can be used as many times as desired on any video picture position. For example, there might be 4 sets of three marker angles for a total of 12 markers being tracked. 3 Marker Angle/Chain As indicated by the name this analysis is based on 3 dots in the video typically placed around a joint. Click on the tool and place 3 points with the left mouse button: To better view a marker or point use the mouse wheel to zoom into the video picture (this only works after you have selected 3 Marker Angle/Chain). P 4408 as of July

41 When done, an angle property menu pops up and offers a set of helpful options and functions: Show on all video frames Body Side Name Save Change + Polarity Advanced Preview Continue Finish If this function is activated, the given drawing is shown on all video pictures As explained later, the body side or camera view defines the polarity of an angle: e.g. a knee flexion motion changes polarity if this motion is seen from the other side This allows you to create or use already existing angle names. Use the pull down list to check the list of available angle names. MyoVideo comes pre loaded with a set of commonly used angle names and their correct setup Any label name and all settings done for this given angle can be stored for permanent use by pressing this Save button Depending on the body side, e.g. a knee flexion can create a negative or a positive polarity curve, this switch allows you to change the signal polarity if needed This switch enters a more comprehensive setup system for anatomical angle definition based on the neutral zero method typically used in the medical and health care field. A more comprehensive introduction is given Minimizes the angle property menu to give the user a full display of the angle(s) created Allows the user to continue connecting more dots to create more angles in the angle chain Saves the angle created and returns to the Viewer screen, once Finished is clicked, no more dots may be added to the angle chain P 4408 as of July

42 The Advanced marker menu manages the offset of anatomical angle definitions. By general convention anatomical angles are defined to be Zero when a human body is standing upright in normal position: Mechanically most angles already show an angular offset in this position, except for the shoulder joint: P 4408 as of July

43 Other Allows you to enter any desired offset value To correct for these offsets use the Advance settings offset correction factors listed under Anatomical Zero: P 4408 as of July

44 The button can be used to apply the defined zero offset to the current video position and angle chain. It is meant to be used so that you first stop at a video picture that shows the given angle in its zeros position, click the three marker angle and use the button. Any setting definitions done in the standard or advanced section can be stored under an angle name by clicking on the button to the right of the angle name. All drawings added to the given video record are listed in the Drawing list in the right tool bar: P 4408 as of July

45 Track Delete Properties Copy This function allows you to operate an auto tracking algorithm for the given drawing element. Pressing this button will apply the auto track algorithm to the entire video record. Attention: Auto tracking requires certain camera settings and tracking markers, which is explained in more detail in the chapter Auto tracking Deletes the highlighted drawing. You can select multiple drawings by holding down the CRTL button and selecting the records. Attention: the green check marks turn the drawing on/off for viewing purposes only. Will open the drawing tool property screen again and allow for modifications to the angle/drawing settings This function allows you to copy and paste all drawing data to other Windows applications, such as Excel 4 Marker Angle Chain The four marker angle tool is based on the angular orientation between two lines drawn between four markers: Start left clicking on the first two markers of line 1, continue left clicking on the two markers of line 2. When done, an angle properties screen will show up that allows you to define body side, angle name, color, polarity and anatomical offsets as explained in the previous section. P 4408 as of July

46 Label Drawing Tool picture. The label drawing tool allows you to add any text label to your video After activating this tool in right tool bar you can move the mouse to the position where you would like to place the text label and select this position by a left mouse click. If you click again without moving the mouse only the text will be visible. If you move the mouse first and then make a second click the text can be moved away from first position and a line will mark the first click position. P 4408 as of July

47 The label property screen allows you to enter any title (label) text, additional text body and text color. Text size can be changed in the Video Options/View Settings dialog explained in the next chapter. Distance Drawing Tool This tool allows you to measure the distance between two objects visible in the video. This measure is based on a reference line that determines a known distance within the same video, e.g. a one meter long scale. The reference line is defined in the video. ATTENTION: if you change the cameraa position, the referencee line needs to be redefined as well. Please also make sure to place the reference line as close to the video projection plane as possible to avoid perspective errors. Option/View Settings menu introduced below; afterr selecting this tool just click two pint in the video to determine distance. P 4408 as of July

48 When done, the Distance property settings screen automatically pops up and allows you to determine body side, name, color and distance calculation mode. The latter one offers 3 modes: 2D Distance: This mode measures the distance independent of the orientation to the reference line. Horizontal Distance: This mode measures the horizontal distance between the 2 markers. The horizontal line is defined by the position of the reference line. In this example the horizontal distance between knee marker and ankle marker is determined (see dashed line): Vertical Distance: This mode measures the vertical distance between the 2 drawing points: This tool can, for example, be used to measure the shoulder height difference between left and right side. P 4408 as of July

49 All distance drawing settings can be stored under a drawing name by clicking on Save on the right side of the drawing name. Crosshair Tool The cross hair tool is a pure visualization tool. It can be used to visualize symmetries, side ratios, distances against vertical and horizontal orientation lines, etc. If placed on a reflective marker, the crosshair tool can be auto tracked by the auto tracking tool explained below. Trajectory Tool This tool is based on the results of auto tracked dots or angles (see next chapter) and visualizes their two dimensional path along the video projection plane: P 4408 as of July

50 This tool allows the visualization of motion patterns, motion quality and constancy. Auto Tracking of Markers Marker auto tracking is a powerful tool that allows for automatic marker detection and tracking over the course of all pictures within a video clip. MyoVideo s auto tracking algorithm works on the principle of contrast and object recognition (circle dots). Successful auto tracking requires well defined video recording conditions, which are described below. A) Equipment Noraxon 6 x6 Calibrated Backdrop 30Hz HD 1080P camera(s) Noraxon Power LED light Reflective markers 1.9 cm B) General remarks It is recommended to use all of the equipment provided by Noraxon as all components have been tested for their ability to work in conjunction for the best possible results during automatic angle tracking. The 30 Hz cameras included in the MyoVideo package have on board video compression which allow for them to provide a much clearer and crisper image than other cameras that have frame rates twice as fast. C) Best Practices Our testing, based on the above listed equipment, revealed that we can track any angle while walking and jogging up to 4 5 mph and knee joint angles during a moderate run up to 7 8 mph. The most important strategy is to keep shutter time (exposure) as low as possible; otherwise marker blurriness can become a challenge. It is also very important that marker sets stay in a perpendicular plane to the camera. P 4408 as of July

51 If you see running strips on your video it means that lights from the ceiling of the room have interference. Just turn them off (if possible). There is a chance that any reflective, white areas or spots on and around the treadmill could distract the auto tracking algorithm The typical distance between subject (or midline of the treadmill) and camera should be between 1.2 and 1.8 meters. The Noraxon Power LED light is the only light needed to illuminate the reflective markers. It is best mounted on top of the camera (as shipped by Noraxon). No additional light source is needed. Room light can even be turned off to avoid interference patterns in the video data. Light is reflected best if the power LED light is adjusted to the same height level as the reflective markers. D) Camera Settings in Motion JPEG at 800 by 600 pixels is a good compromise between picture quality and data file size. Certain computers (with high end graphics cards and processors) can also use full HD but higher resolution does not improve tracking stability. If the camera(s) are rotated to portrait position (recommended) the rotate setting should be clockwise or counter clockwise, depending on the mounting direction. P 4408 as of July

52 All camera options stay unchecked except: Exposure Gain Focus This is the most important switch for stable auto tracking; it reduces the lens shutter time which again is important to avoid blurriness of markers. Please select the lowest available value; for the standard Noraxon cameras it is (1/2). The gain factor depends on the overall light condition. The gain factor can be used to brighten up the video which is automatically darkened by the low exposure value. Find a good contrast between good visibility and contrast between reflective markers and the body. Typical gain will be around (125). Turning on manual focus gives more tracking stability; the value should be (0). Marker blurriness: For auto tracking it is important to avoid any marker or object distortion. The most important action here is to use the lowest exposure time available at a given light/gain condition: Good compromise between Too high exposure: Good exposure: brightness and contrast: E) Tracking Dots, crosshair and marker sequences (angles) can all be tracked. Typically, 3 markers are used to define a joint angle. The first step for tracking is that a tracking object has to be determined or created, e.g. typically an angle or a chain of angles. Once an angle is created or highlighted in the list of drawing objects (in right tool bar), press to start the tracking process: P 4408 as of July

53 The system also tracks multiple angles acting in a chain. To create multi joint chains, start with the definition of the first angle, name it under Name, then press and define the second angle and so on. When done with the angle chain, press : The algorithm can also track black dots on bright skins/surfaces, although we strongly recommend white reflective markers (included in the package from Noraxon) for tracking. For the black dots, low shutter time is required, as well as care that other black objects do not distract the tracking algorithm. P 4408 as of July

54 Auto Tracking of Trajectory In case single markers are tracked, their two dimensional pathway can be visualized by the Trajectory tool introduced above. If you need access to the 2D coordinate data, use the record Export function in the Database menu, and it will export the time line data and the two x, y coordinates of each picture position. Example of 2D coordinate data export to an Excel spread sheet: P 4408 as of July

55 Video Options The second functional menu under the tool bar on the right side of Viewer Tab is the Video Options menu: Video Options consists of a setup for View Settings, copy picture, time offset and export of video. View Settings This button opens up a setup screen where you can rename the camera, add a grid (enter how many vertical/horizontal lines you want), a reference line (used in conjunction with the distance tool) and the ability to adjust the font size. Copy Picture This button takes a snapshot of the POI or point in time in the video. It copies it to the clipboard and you can then paste it (CTRL V ) into any other Windows based document or even an . View Settings This function allows you to offset the video when trying to sync it with other peripheral devices, such as EMG, or another video that you may have imported from an external location. You can also choose to only apply to the current video or all video associated with the record. Export Video This menu option allows you to export the raw video, versus exporting the screen recording via the button. None of the drawings or markers are exported, only the raw video. P 4408 as of July

56 Marker Menu only uses the Point of Interest markers. These markers are placed by pressing the button. All other marker options do not apply to. Edit Menu Unlike Signal Processing, all Edit operations physically change the record data set and the original recording cannot be restored. Therefore, it is generally recommended to first make a backup or a copy of your data. Alternatively, save any changes done in Edit mode with the option Save as..., which allows you to create a new record file (including all your edit changes) while keeping the source record in its original status. At the top of the Channel Tools box there are 3 iconized View Modes of the signals: Raw show the original unprocessed signal (signal processing is removed) Processed show the signal only in its processed version (signal processing included) Both show an overlay of both raw and processed Depending on the selection done here, any channel tool operation refers to this selection. For example, to copy a raw channel to clipboard and paste it to another location the Raw signals mode must be used. New channel(s) This function allows you to create new channel lines at any location in your record. P 4408 as of July

57 Place After can be used to define a certain location for the insertion in the channel order. Name edits the name of the channels. Color loads a color palette to define a trace color for this channel. Channel type offers a pull down list of all available channel types to be selected for the new channel. Raw Signal organizes the amplitude scaling settings for the new channel. Units define the physical channel unit. # of digits is the decimal value when showing the actual amplitude value. Bottom value/ Top value the lowest (Bottom) and highest (Top) amplitude scaling value for the Y axis. Delete, Copy and Paste Channels All three options have the same functionality. The selection for the given operation is done via the Select By section of this sub menu. By default all recorded channels are selected if there is no Select By method chosen. P 4408 as of July

58 To select a channel for the given Edit operation you can use these selection modes: Select by: Channel type select channels by type, e.g. EMG, force, etc. By body side select left or right side labeled channels Channel number: select by the channel list number Note: All 3 modes can be combined with each other. Delete physically erases a channel P 4408 as of July

59 Note: after the confirmation, which appears when leaving the record viewer menu, this channel cannot be restored! Copy channels copies the selected channell data to the clipboard Paste values fills channel data coming from the clipboard to the selected target channel Paste channels pastes channels copied to the clipboard below the last channel Fill Channels The Fill Channel function is an editor for amplitude values. Based on a mouse mark signal portion, any amplitude value can be entered and will overwrite the existing values. For example, this function can be used to manually eliminate artifact spikes or other invalid dataa portions within a channel. Note: this operation will physically change the data of your source signal so back up your files to prevent the loss of raw data. P 4408 as of July

60 Offset Values This edit functionn is designedd for manual correction of the baseline to any desired value: Recalibrate Channels This function corrects EMG baseline shift and is not applicable to myopressure. Scale Channel(s) This function allows you to multiply the selected amplitude dataa of a given channel by any factor: P 4408 as of July

61 For example: This function can be used to mathematically "amplify" (scale) the signal up or scale it down to lower values. Revert changes Any edit operation done thus far on the currently loaded record can be reverted to the original as long as the record is not confirmed to be changed when leaving the Edit/Viewer Menu: P 4408 as of July

62 Edit Channel Properties This menu can be started by right clicking on channel name in the signal screens: Place after can be used to move a selected channel after another one. Use this functionn to re order channels. Name changes the current channel name and side indicator. Color loads a color palette to define trace colors for this channel. Channel type offers a pull down list of all available channel types to be selected for the new channel. Raw Signal / Processed Signal section organizes the amplitude scaling settings for the selected channel. Units defines the physical channel unit. # of digits is the decimal value when showing thee actual amplitude value. Bottom value is the lowest and Top value is the highest amplitude scaling value for the Y axis. P 4408 as of July

63 Signal Bars This button adds a new screen window showing the amplitude data at the cursor position as a bar graph: Note: Signal bars can only be used with if marker tracking has been used to identify joint angles. Show channels with unit < > allows the user to select what type of signal/channel will be displayed as a bar graph Smoothing the value entered here defines a smoothing interval based on the mean value of this selected interval P 4408 as of July

64 Multiple Video Camera Recordings supports multiple cameras recorded into one record (two camera view): Note: It is not recommended to use more than 2 cameras for any single record. At any time you can add a second camera to any configuration by entering the Measurement setup menu or selecting the preconfigured 2 Cameras configuration in Home screen. The measurement setup screen can be accessed via pressing Edit for a given configuration in the home screen or Measurement Setup in the right tool bar of Video recording monitor: Home screen step 3: Measurement screen tool bar: All video analysis functions can be utilized and a light blue frame indicates the selected video clip window and limits all drawings to this clip only. Both videos will be automatically included at any point of interest analysis (use the Add to Report Button to define POI s). P 4408 as of July

65 Two Video Record Comparison supports a direct comparison of two video records in the record viewer. To load 2 records into the viewer, select a record from the database menu, hold the CRTL key and select a second record, then click the green action button View or Viewer in the top navigation bar: Both records will be shown in a direct comparison. The control bar will play both videos simultaneously: button in the video P 4408 as of July

66 Click the button in the video control bar to let a video start at a defined position and repeat the same procedure with the other video record. The Play All button will now play both videos from the sync points. P 4408 as of July

67 Section 9: Report Menu Introduction Reports can only be started if a recording was taken in Measure and followed immediately by selecting a Report, or a report was selected in Database and loaded to the Viewer menu (see work flow from left to right in the main navigation bar). Staying in the Viewer menu, click on the Report button in the top navigation bar or green Report button in the main action bar: Reporting System All recordings can be analyzed with a standardized default report called MyoVideo POI Report. Simultaneously recorded data from other modules, like EMG channels (myomuscle module) or 3D angles (myomotion module) are automatically included in the analysis. There are numerous possibilities to edit, modify or even create self defined new reports. When done, the Select Report menu is opened. Dependent on the amount of installed modules, a selection of ready to go analysis reports are displayed. Note: The report is based on the Point of Interest selection done in the Viewer menu: Any video position that was marked with Add to Report will automatically be included in the report analysis. If no POI was set in viewer menu the report will stay empty. Here is a brief recap of the operation steps required to produce a Video Report: 1.) Replay and watch the video 2.) Stop at a POI and add drawings, angles, labels, etc. 3.) Press in the video control bar 4.) Continue to play the video and stop at next POI 5.) Repeat step #3 6.) When finished adding all POIs, click on P 4408 as of July

68 Report selection organized in module tab system 2. Channel selection section 3. Report info section with report preview 4. Report Options The other sections are meant to be used for EMG and other biomechanical devices setups and can be ignored for video only records. 1) Report Selection Reports are sorted in four major tab sections. The accessibility of these tabs is dependent upon the equipment and modules installed. MyoMuscle (Application, Clinical, Standard) for all myomuscle EMG and sensor records MyoMotion for all myomotion based 3D kinematic records MyoPressure for all pressure related records MyoVideo for 1 and 2 video camera records The list of available default reports may grow with new program updates. P 4408 as of July

69 2) Channel Selection By default all channels of a given record are selected for the report analysis and listed in the section Selected channels: If analysis should be restricted to certain channels, three filter options are offered: Channel type e.g. select all EMG, force or angle channels By body side select left or right side labeled channels Channel number: select by the channel list number 3) Report Info with Report Preview Here you can find a short description of the selected report addressing its main purpose, the way analysis periods are defined (Period Definition), analysis elements and typical signal processing steps (if needed, e.g. EMG). The right side shows a static picture to preview the typical contents of the selected report. P 4408 as of July

70 4) Report Options New Specialists can create their own reports by selecting a report class and manually choosing analysis, layout and info elements. A description of this Report Generator module is given in an additional document. Edit Basic Settings If needed a report s title, tab sections, description text and preview window can be changed with this edit menu: Edit Report Class The report class editor is meant to be used for experienced report designers only. Reports can vary in complexity in terms of periods and phase definition. For example, some reports do not require any period or phase definition because usually the whole record or a mouse marked area is analyzed (e.g. Clinical coordination report or Spectrum report). Other reports, like Unilateral Gait in the MyoMuscle Application Reports, need a foot switch triggered period definition with 2 phases (stance and swing phase) to properly analyze the gait cycle. Even more complex are the Bilateral gait setups which add more sub phases to the gait cycle. The current MR3 version offers six levels of complexity to manage these differing tasks: P 4408 as of July

71 Selection / Whole record The whole record or the mouse marked area will be analyzed. Point of Interest Only single points of interest, marked with the button Add to Report in Viewer menu, will be included in the report (designed for Video Analysis). One phase periods A sequence of markers or event based (defined by trigger channels) periods without additional sub phases will be analyzed. Two phase periods A sequence of periods with two sub phases will be analyzed (e.g. extension/flexion, stance/swing phase, etc.). You can freely name the first and second phase (default names are Pre and Post event). Bilateral analysis This class is mainly designed for left to right comparison analysis in bilateral gait measurements and splits the period definition into left and right side periods. Bilateral Gait analysis A sub version of Bilateral analysis and needed for myopressure recordings. Delete This function will delete a report without a possibility of restoring it. Carefully use this option and consider first making a backup to an external location using the Export function. P 4408 as of July

72 Export/Import Here you can export or import reports from external locations, such as: other HDD drives, network directories, etc. An exported report is automatically stored in a container directory called Noraxon MR3 data. To import reportss set a path to the location where this directory is located. OK This operates the selected report; once the correct report has been selected press OK to continue. The relevant report for video recordings is listed in the tab MyoVideo Report of section 1. Report Preview and Editing Once a report is chosen and the analysis periods have been set, a preview of the report will be generated. At this point, there is also the option for printing, exporting, or further editing and analysis. In the right side tool bar are the editing options. Thee report options exist in two modes: Print Preview and Edit Report. The user can toggle between the two to access different report options and customize the report. P 4408 as of July

73 Print Preview Under Print Preview there are three available options: Output, View, and Analysis. Output Options Print/ Print Options print the report or format the report including which available printer to print to, page size and orientation, and margin size. Copy Element any elements (graphs, tables, etc.) of the report can be selected by clicking on the element. Selecting Copy Element will send the element to the clipboard to allow for pasting into other programs such as word, paint, or excel. Export Report sends the report to clipboardd or saved as an HTML, Text, or Excel file in a specified location. Save Report Templatee As the user can savee customized report templates for later use. View Options Zoom the user can zoom to a percentage of the report,, size the report to fit vertically or horizontally, or choose to view the report one or two pages at a time. View Signal the user can view the signals off a selected element. Clicking on this will display the selected element in the window. To return to the report preview, hit the back arrow button or click on the Report tab. P 4408 as of July

74 Analysis Options Reanalyze will take the user back to the Viewer menu to change the period definition. Compare default is set to none, but the user can choose to compare sides (right vs. left), compare to other records in the database, compare to the normative records in the database, or compare selected channels. Add To Normative adds to normatives in the database, or creates and adds to new normatives in the database. Note: The only normative included with the MR3 software is the Natural Floor Gait Reference Curves. All other normative data must be created and saved by P 4408 as of July

75 Compare the user. Only the time normalized averaged curves are stored to the given normative file. Add to normative MR3 has a powerful normative data generator. It is designed for records analyzed with averaged curves reports such as: Gait, Average Activation, Isokinetics, etc. All these records have a time normalized ensemble average curve with plus/minus 1 SD. The time normalization in cycle from 0 to 100% enables a standardized format for comparison files of different phase duration. Any successfully created averaged curve can create a New normative file or it can be added (Add) to an existing one: All normative files are listed in the Normative Data base section of the Database menu. They are also available as normative comparison files in the report Comparison option described above. Click on Compare in the right tool bar menu to start the Comparison Menu. MR3 supports four major comparison routines for report data: Compare sides Compare to other records Compare to normative (if available) Compare channels (within the same record) Compare sides In records measuring both sides of a muscle group/channel, the Measurement Setup Menu allows each muscle group a side indicator (LT and RT, see Measurement Setup Menu). If this comparison mode is chosen, muscles/channels of the same name but with differing side indicator RT and LT are automatically compared. This function works independently of the channel numbers and arrangements, all channels of the same channel name but with LT and RT indicator are automatically compared! P 4408 as of July

76 Compare to other records Compares the record to another record previously stored in the database and analyzed in the Report menu. Note: In order to compare records, the records must have generated the same exact report at some point. Only 2 reports should be compared in one comparison run. After confirming the record selection with, both record data will be shown side by side or as an overlaid signal in each report element: The comparison is based on points of interest: the first POI in the first record will be compared to first POI in the second record and so on. If angle data or EMG data are associated to the given POI their data will automatically be shown as bar graphs on the right side of the video pictures. P 4408 as of July

77 Compare to normative (curves) MR3 s unique normative data system can be used to compare a current record to a normative record. Normative records are usually time normalized averaged curves of single healthy subjects performing a repetitive sequence of the analyzed activity. To create a normative curve, first the single subject performs a repetitive sequence, and then each repetition period in this sequence is averaged in time normalized cycles. Finally 10 or more of these individual time normalized records are averaged again in MR3 s normative database in a group or normative curve. Once done and available in the normative database, a current patient curve can be compared to this group curve to show differences, such as differences in the EMG pattern. Note: Only records of the same type and analyzed with the same report settings can be compared. The selection box Normative has a pull down list of all available normative curves available in the current project. Choose a suitable normative record from this list. All normative files that were created with the right tool bar function Add to normative are listed here. MR3 is equipped with one sample normative file for floor walking. Scale normative If normative data were not amplitude normalized via Signal processing in the Viewer menu, the amplitude data may heavily vary. This function allows users to amplitude normalize both the selected patient record as well as the P 4408 as of July

78 normative file to its Peak or its Mean value. This procedure enables a better fit between curves and allows more detailed inspection of curve behavior and other characteristics. Edit Report Edit Report options allow the user to customize the report by adding or deleting elements. New Element This function creates areas for the user to insert new elements. The user must then double click within one of the dashed areas with thee text Double click heree to insert an element. The new element box will appear: The user can determine which element they need byy reading the descriptions provided in the box. Each element willl have different availablee parameters and outpu options for how the element informationn will be displayed, i.e. table, graph,, or combination of the two. P 4408 as of July

79 Note: Any elements in the report can be edited by double clicking the element. Delete Element To remove an element from the report, simply click on the element and select Delete Element. This will prompt the user with a confirmation message, and if Yes is selected the element will be removed from the report. After finishing the report review you can freely continue to printt the report or directly jump into any other main menu shown in the main package navigation bar: At this point you can also choose to Exit the program or begin another measurement. P 4408 as of July

80 Appendix A: Report Description MyoVideo Point of Interest Report The following analysis of video pictures is based on the Point of Interest (POI) definition done in the Viewer menu: each video picture/position labeled with the button will be shown here in chronological time order. Drawings will be shown in the video with video comments just above each video picture. Angle and distance data determined for that picture are displayed as numerical bar graphs on the right side of the video picture: Double clicking on this report element opens up a setup menu: The Parameters section is reserved for video clips with integrated EMG recording (or other devices signals) and calculates parameters based on their measurement curves. The Output section allows you to make adjustments to font and picture sizes. Show difference only has an effect if several calculation parameters P 4408 as of July

81 are compared. Automatic EMG and Signal Analysis If a video clip was recorded in conjunction with EMG, the EMG data will be automatically analyzed for each point of interest: By default the EMG calculation is set to the mean amplitude EMG value of a 100ms analysis period located around the point of interest (50ms before and 50ms after POI). This analysis interval and also the calculation parameter for the EMG curves can be P 4408 as of July

82 modified in the Parameter section of the report element setup menu, which can be approached by left mouse double click on the MyoVideo report element The list of available calculation parameters is sorted in Amplitude and Frequency parameters, Slope & Varialbility, Sub period and Timing parameters. Each selected parameter has their own group of settings: P 4408 as of July

83 Window around marker Use raw signal Manual label Restrict all calculations to channels The entered values define the analysis interval around the POI. Forces the use of raw data for the parameter calculation, even if the signals were processed. This switch is important if frequency parameters are selected. The calculated parameter can be manually labeled. This switch allows you to limit the parameter calculation to certain channel types (e.g. EMG) or to physical numbers used in the record viewer. P 4408 as of July

84 Appendix B: Multi Device Configurations and Master Sync System Whenever is used with other Noraxon devices like myomotion, myomuscle EMG telemetry or myopressure pressure recordings, it is recommended that the Master Sync System be purchased and activated. The Master Sync is a special sync device with 5 output ports and 1 input port. It needs to be inserted as a device in the device setup menu: Make sure that the Master Sync device is connected to your PC prior to opening the Insert Devices menu: Once the Master Sync is inserted as a device, it will automatically send a synchronization pulse to all other Noraxon devices. This pulse is generated and sent 1 second after start of recording. For setup with an EMG device for master sync mode please refer to the instructions in the hardware manual. P 4408 as of July

85 Appendix C: Master Sync and Connection Schemes for with Logitech Requires: Noraxon Master Sync device Sync cable Sync Light Process: 1. Connect the Master Sync device to your PC via USB cable 2. Start the Device Setup menu by clicking on Setup in Home screen (right tool bar) 3. Click Insert Device and select the Noraxon Sync Master as a device to be added 4. Confirm with OK and make sure that the Noraxon Sync master device is shown in the Selected Devices section: 5. When done click on the inserted webcam symbol and hit Configure Device 6. Select Sync in for the Hardware Synchronization selection line: P 4408 as of July

86 7. Connect the sync cable in one of the Master Sync s output ports and the sync light s sync input port. 8. Click on the Detect button and follow the instructions given: Turn sync LED off and press Ok Turn sync LED on and press Ok 9. Verify the LED detection is correct, as indicated by the green box. If not correct, the box can be moved or resized. However, if the detected placement is not correct it is advisable to move the sync light to a position better detected by the camera/software. Note: This will have to be repeated for each camera in use. The sync light must be in the view of each camera being used if being used to synchronize. Once sync detection is complete, return to the home screen when done by confirming all menu screens with OK. 10. When done, perform a test recording. If the Master Sync signal is seen by the sync light, it will illuminate. If not, the light will not illuminate and there will be an automatic error message in the storing dialog right after a finishing a recording. P 4408 as of July

87 Appendix D: Master Sync and Connection Schemes for with Optitrack Requires: Noraxon Master Sync device Sync cable Sync Light Process: 1. Connect the Master Sync device to your PC via USB cable 2. Start the Device Setup menu by clicking on Setup in Home screen (right tool bar) 3. Click Insert Device and select the Noraxon Sync Master as a device to be added 4. Confirm with OK and make sure that the Noraxon Sync master device is shown in the Selected Devices section: 5. In the Measurement Setup at least one of the systems utilizing the sync pulse must have a check in the Sync channel. P 4408 as of July

88 6. Position cameras so they all have the sync light in view. 7. Once everything is set up accordingly, follow the steps to take a measurement. When the measurement is done, the software will automatically proceed to display the record in the Viewer tab. 8. In the Viewer tab select one or more of the sync channels to be displayed. Note: To accurately find the beginning of the sync pulse, it may help to zoom in around the sync pulse. Make sure that both the time the sync light illuminates and the beginning of the sync pulse are in view on the timeline. 9. Scroll through the timeline to find the exact moment the sync light begins to illuminate. Make sure the cursor is on that moment and highlight the area between that moment and the beginning of the sync pulse, starting at the point of illumination. Note: The most accurate way to do this is to place the cursor at the moment of first illumination and, holding the shift key, use the right or left arrow on the keyboard to highlight the area on the timeline between the beginning of illumination and beginning of the sync pulse. Continue to hold the arrow until you come to the time the sync pulse has a value of 1. It is important to begin at the point of illumination and move to the sync pulse. P 4408 as of July

89 10. In the Right side toolbar select the Video Options and find the Time Offset function. The highlighted time should appear automatically in the time offset window. 11. Choose the camera you wish to apply the time offset to by clicking on the camera tile. Choose to apply to Current video clip. Note: Before applying the same time offset to all cameras, confirm that all video clips have equal time offsets. This can be done by checking if the sync light begins to illuminate at the same time in all camera views. Different model cameras (i.e. Logitech and Optitrack) will often have different time offsets. However, cameras of the same model can sometimes differ as well, so it is always best to check before applying the same time offset to al cameras. 12. Wait for the video to shift with the time offset and check to make sure the video is now synchronized. P 4408 as of July

90 Note: Be patient, the shifting of video may take some time, especially for longer records. If you try to apply the time offset again before it is done, this will simply result in the time offset being applied twice and the video will now be out of sync with the data. Once sync detection is complete, return to the home screen when done by confirming all menu screens with OK. 13. When done, perform a test recording. If the Master Sync signal is seen by the sync light, it will illuminate. If not, the light will not illuminate and there will be an automatic error message in the storing dialog right after a finishing a recording. P 4408 as of July

91 Appendix E: Reflective Marker Placement Frontal Markers P 4408 as of July

92 Posterior and Lateral Markers P 4408 as of July