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Team Mosaic
Project “PRASER”
Senior Design Project
Comprehensive Design Review
Advisor:
Members:
Professor Lixin Gao
Allen Chew, Charles Essien,
Brian Giang, Simon Ma
Evaluators: Professor Gong, Professor Vouvakis
SDP 12
Agenda
 Introduction
• Recap from MDR
• Refined project definition
 Project Specification
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System block diagram
Subsystem components
Application
Demonstration
 Cumulative Design Review
• Distribution of tasks
• Team responsibility
• Internal deadlines
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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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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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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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Design Specifications –Block Diagram
System Block Diagram
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Design Specifications – Kinect Subsystem
OpenNI
NITE
OpenGL
 OpenNI & NITE
• Generate “users”
• Return interpreted motions and gestures
 OpenGL
• Real-time image manipulation
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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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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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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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Kinect Demonstration
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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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Laser System Design – Galvanometer
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Laser System Demo
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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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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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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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FDR - Internal deadlines
February - April
•Spring Break
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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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FDR - Internal deadlines
• FDR – April 2-6
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