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Published byTheodore Bruce Modified over 9 years ago
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SDP 12 Project “PRASER” Senior Design Project Comprehensive Design Review Team Mosaic Advisor: Professor Lixin Gao Members: Allen Chew, Charles Essien, Brian Giang, Simon Ma Evaluators: Professor Gong, Professor Vouvakis
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2 SDP 12 2 Agenda Introduction Recap from MDR Refined project definition Project Specification System block diagram Subsystem components Application Demonstration Cumulative Design Review Distribution of tasks Team responsibility Internal deadlines
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3 SDP 12 3 Reintroduction - Motivation Hand held laser pointers Only facilitate basic highlighting Online presentations are boring Difficult to view both presentation and presenter at the same time Low quality slides (streaming video) Loss of focus on presenter Viewing remote presentations Bad visual quality Loss of expression
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4 SDP 12 4 Reintroduction - Goals We want to: Improve presentation experience More interactive More entertaining Rethink approach to capturing presentations Bring focus back to the presenter Facilitate “emotion” for remote presentation
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5 SDP 12 5 Design Specification – Project Definition Praser is … “A redesigned platform capable of delivering an enhanced presentation experience, both for in person and remote viewers.” More interactive utility for presenters Better experience for viewers with avatars
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6 SDP 12 6 Design Specifications –Block Diagram System Block Diagram
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7 SDP 12 7 Design Specifications – Kinect Subsystem OpenNI & NITE Generate “users” Return interpreted motions and gestures OpenGL Real-time image manipulation OpenNI NITE OpenGL
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8 SDP 12 8 Kinect Subsystem - Capabilities Gesture Recognition Hand gestures for control User poses Tracking Mapping user position to screen Location based “selections” Compositing Background removal Image manipulation
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9 SDP 12 9 Kinect Subsystem – Avatar Application Capture presenter in on screen avatar Walk around and point modes X, Y coordinates mapped with Kinect Depth information Presenter avatar points mapped to actual points
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10 SDP 12 10 Kinect Subsystem – Avatar Application cont’d Benefits: More expression and emotion Better interaction with slideshow slides More efficient remote viewing of presentation
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11 SDP 12 Kinect Demonstration 11
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12 SDP 12 12 Design Specifications –Laser Subsystem Laser subsystem manipulates a laser to create image based on persistence of vision. Four major components: Galvo, DAC, Laser Pointer, Power Supply Galvanometer - reflect the laser on x & y axis Digital to Analog Converter - communication between the computer and galvo
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13 SDP 12 13 Laser System Design – Galvanometer
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14 SDP 12 Laser System Demo 14
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15 SDP 12 15 Problems Addressed We recently purchased safety goggles to prevent any retinal damage and can now work on emitter Blanking not currently implemented Attached heat sink to laser module to prevent overheating Mounting the laser to board and aligning to galvos Memory Leak in software
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16 SDP 12 16 Final Design Review - Team Responsibility Allen Chew (CSE) – Team Manager, Coordinated laser projection system, Software Development, Researched on how to build correctional amplifier, Researched and ordered parts for project in a timely manner Charles Essien (CSE) – Software coordinator, Research graphics libraries, Isolated user pixels and overlay onto slides, Compiled sections of MDR report Brian Giang (EE) – Laser Projection Coordinator, Coordinated team meetings and set deadlines, Assembled laser projection system and figured signal lines from DAC Simon Ma (CSE) – Compiled OpenLase Binaries, Ported code over to Ubuntu, Installed and configured JACK to work correctly in Ubuntu.
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17 SDP 12 17 Final Design Review Final design and start prototyping applications Praser Interface with the Kinect as input A fully working laser system that will project onto any surface Using the laser, draw more complex animations and implement a menu system.
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18 SDP 12 18 FDR - Internal deadlines February - April Spring Break Implement blanking in laser system Calibrate to ILDA standards Have Kinect program interact with OpenLase Develop applications with Kinect input FDR – April 2-6
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19 SDP 12 19 FDR - Internal deadlines FDR – April 2-6
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20 SDP 12 20 Application Layers
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21 SDP 12 21 Laser System Design – Entire System OpenLase converts ILDA files to sound Soundcard outputs three different signals: Right stereo channel orients X galvo Left stereo channel orients Y galvo Green Laser Modulation turns on/off the laser
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22 SDP 12 Correctional Opamp Built a negating opamp circuit to simulate a differential signal suitable for galvo 22
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23 SDP 12 23 Laser System Design – SmartPoint Application “Smarter” laser pointer Laser menu and utilities Presenter holds hand up to reveal menu Grab and manipulate elements from slides E.g. copy a figure to board
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24 SDP 12 24 Design Specifications -Hardware Kinect Specification 30Hz 8-bit VGA resolution (640 × 480 pixels) Usable distance 3.9 ft – 11 ft Angular FOV 57° horizontally and 43° vertically motorized tilting up to 27° minimum viewing horizontal distance of 34 in minimum viewing vertical 63 cm microphone array features four microphone capsules
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