Create an Industrial 3D Machine Vision System using DLP Technology

Transcription

1 Create an Industrial 3D Machine Vision System using DLP Technology -AM572x Processor based DLP Structured Light Terry Yuan Business Development Manager 1

2 1987 TI DLP Products: A History of Innovation Dr. Larry Hornbeck invents Digital Micromirror Device, known as the DLP Chip 1996 First commercial DLP system ships; enables first ultra portable 6lb projector 1998 DLP receives first Emmy Award for Outstanding Achievement In Engineering Development 2004 DLP becomes highest volume MEMS supplier worldwide 2009 Consumer devices begin to ship worldwide featuring DLP Pico Projectors 2011 Half of all movie theatres converted from film to digital enabled by DLP Cinema technology 2012 New DLP development kit launches allowing developers to use DLP technology in new markets 2013 DLP Products takes display to the automobile 2015 First automotivequalified DLP chipset for heads up display applications Academy Award presented to Dr. Hornbeck for the invention of DMD technology used in DLP Cinema projection. * * Photo credit: Michael Yada / A.M.P.A.S. For more than two decades, award-winning DLP Products innovations have solved some of the world s most complex display and light-control applications.

3 DLP Products DLP Display Standard & Pico Chipsets Mobile & Laser TV Mobile & Embedded Projectors Digital Signage Projection Mapping Large Venue Industrial 3D Printing Lithography 3D Machine Vision Sensing Spectroscopy NIR Sensing Automotive Head-up Display Headlights

4 How DLP Technology Works 4

5 DLP MEMS technology enables many industrial applications Deep UV Ultra-Violet Visible Near-Infrared Infrared DLP chip or DMD Array of micromirrors 363 nm 420 nm 700 nm 2500 nm DLP Capabilities (Today) Works with lamps, LEDs, and Lasers Array of micromirrors that digitally switch to steer light. The Industrial DMD is a fast, efficient, and reliable spatial light modulator (SLM) offering: 1) High Speed Switching Switching of the full array at up to 32 khz 2) Extended Wavelength Supporting UV to near-infrared (NIR) and extended visual spectrum 3) Wavelength Selection Direct and modulate specific wavelengths of light through programmable pixel mapping 5

6 Introduction to 3D Machine Vision WHAT IS 3D MACHINE VISION? 3D Measurement is a fast and accurate way of gathering physical measurements of an object onto a computer in an organized manner, resulting in 3D Scan Data. Once the scan data is on the computer, all of the dimensions of the object can be taken, such as length, width, height, volume, feature size, feature location, surface area, etc. WHERE IS 3D MACHINE VISION USED? Location & Guidance Measure & Inspect Biometrics Identification User I/F & Gesture

7 Optical 3D Measurement Systems Use Triangulation (Geometry) to Determine the Depth of an Object By Different Methods: Single Line Laser Scan Stereo Triangulation or Photogrammetry Time of Flight Structured Light

8 3D Machine Vision with Structured Light One camera captures projected patterns The projected patterns inherently create identifiable features Can easily identify all points because of projected pattern u v u v (x,y,z) Projector Triangulation Base (x,y,z) Camera 8

9 3D Machine Vision with DLP technology Enabling scalable and high resolution 3D scanning How it Works Why choose DLP technology? DLP Feature Design Benefit 2. Object distorts the light patterns Optical MEMS device Inherently non-invasive approach 4. Image processing and triangulation algorithms determine 3D structure of object High speed pattern rates up to 32 khz with ~2 µs optical switching Real-time light processing and/or display for instant information 1. DLP DMD programs and projects light patterns 3. Camera or sensor detects light distortion External Triggers High bit depth Enables easy synchronization to external cameras and sensors Higher accuracy and resolution DLP chipset End Equipment Examples Extended wavelength support nm Enables applications requiring UV, Visible, or NIR light sources or detection (unlike many other spatial light modulators) Factory Automation Dental/Medical Scanners Industrial Metrology Small Form Factor Portable, lower cost solutions when combined with TI's embedded processors

10 DLP Programmable Patterns Programmable Patterns allow users to gain full control over the Structured Light System Multiple patterns Binary Code Gray Code or N-ary Codes Phase Shift Hybrid: Gray Code + Phase Shift Adaptive Patterns Varying Color/Light and Pattern depending on object response and movement Hybrid Patterns Combination of several patterns

11 3D Machine Vision System Block Diagram 11

12 TI Designs for Targeted Applications Spectroscopy 3D Machine Vision 3D Printing & Stereolithography

13 DLP p 3D Scanner TI Design Complete set of design files Mechanical schematic of metal frame Preliminary calibration for quick evaluation Executable calibration and scanning program Our test results using this exact design Access to SDK 13

14 DLP p 3D Scanner TI Design Trigger cable assembly guide Executable calibration and scanning program Mechanical schematic of metal frame Preliminary calibration for quick evaluation Our test results using this exact design System diagram Bill of Materials Complete set of design files 14

15 DLP p 3D Scanner TI Design Trigger cable assembly guide Executable calibration and scanning program Mechanical schematic of metal frame Preliminary calibration for quick evaluation Our test results using this exact design System diagram Bill of materials Complete set of design files 15

16 DLP p 3D Scanner TI Design Trigger cable assembly guide Executable calibration and scanning program Mechanical schematic of metal frame Preliminary calibration for quick evaluation Our test results using this exact design System diagram Bill of materials Complete set of design files 16

17 DLP p 3D Scanner TI Design Trigger cable assembly guide Executable calibration and scanning program Mechanical schematic of metal frame Preliminary calibration for quick evaluation Our test results using this exact design System diagram Bill of materials Complete set of design files Link to SDK 17

18 DLP LightCrafter 4500 Key Specifications DMD Resolution Brightness Interfaces Maximum Pattern Rate Synchronization 0.45-inch WXGA (912x1140 native) 150 lumens (min) from RGB LEDs USB, Mini-HDMI, I 2 C, FPD Link 4225 Hz binary 120 Hz 8-bit grayscale 2x Configurable I/O Triggers DLP LightCrafter Beagle Bone = Fully Embedded Solution Load More Patterns Stream Patterns Faster Expand Connectivity Dimensions 122mm x 115mm x 48mm

19 DLP Structured Light SDK A Complete 3D Machine Vision Development Software Solution DLP Platform Generate high speed programmable binary Gray code patterns Calibration Projector and camera calibration generates system geometry Camera High-speed synchronized captures Structured Light Decode Gray coded patterns to generate disparity map The DLP 3D Structured Light SDK can also be utilized on smaller (DLP LightCrafter) and larger (DLP LightCrafter 6500) resolution DLP EVMs for portable and high resolution 3D scanning applications. Geometry Reconstruct 3D point clouds

20 Examples in the public domain Seikowave Portable 3D Scanner Carestream Intra Oral Scanner

21 Cortex A15: AM57x 21

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23 System Components

24 Getting Started: Easy as 1, 2, 3 Educate Explore the DLP 3D Machine Vision system block diagram Watch the 3D Scanning TI Design Video Evaluate Order DLP LightCrafter4500 EVM from a TI distributor or estore Get connected with the DLP E2E community Create Download the free TI Design: electronics, optics, and software Find a design services or module provider from the DLP Design Network 24

25 Thank You Terry Yuan Business Development Manager / terry-yuan@ti.com 25

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