Project Multi-Touch Albert You Aditya Mittal Paul Ferrara Jim Wallace.

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Presentation transcript:

Project Multi-Touch Albert You Aditya Mittal Paul Ferrara Jim Wallace

Overview Multi-touch hand gesture implementation onto a 36”x27” display Multi-touch hand gesture implementation onto a 36”x27” display Rear projection technology Rear projection technology Motion Detection Algorithm Motion Detection Algorithm Infrared LEDs & detector Infrared LEDs & detector

Current Status

Rear Projection Mirror angled at 45 degrees respect to floor Mirror angled at 45 degrees respect to floor Image reflects off mirror to screen above Image reflects off mirror to screen above Projector raised to 0.6 meters above ground Projector raised to 0.6 meters above ground Tracing paper lined on bottom side of acrylic Tracing paper lined on bottom side of acrylic

Webcam Negative film applied in between focal lens Negative film applied in between focal lens Gain increased through software tweaking Gain increased through software tweaking 320x240 resolution 320x240 resolution Black/White display Black/White display

Table Adjustments Wheels Wheels L blocks L blocks Height up Height up Furnishes Furnishes

Light Emitting Diode (LED) Improved LED strip design Improved LED strip design Reduces artifacts Reduces artifacts Reduces “hover” Reduces “hover” Electrical Tape Electrical Tape

Software, Drivers, Code Windows Hotkey Windows Hotkey Motion Detection Algorithm Motion Detection Algorithm Compare Background Frame with Current Frame Compare Background Frame with Current Frame Pixel change count compares Pixel change count compares Erosion Filter: reduce image noise from webcam Erosion Filter: reduce image noise from webcam SpriteCraft SpriteCraft

Power Supply V1: V V1: V V2: V V2: V Wires are connected properly Wires are connected properly

System Checks Mirror angled 10 degrees from ground Mirror angled 10 degrees from ground Webcam placed in center directly beneath the screen Webcam placed in center directly beneath the screen Projector raised to 0.6 meters above ground and angled toward mirror on the ground Projector raised to 0.6 meters above ground and angled toward mirror on the ground

“Hover Test” Hover hand with circular motions 1” above screen Hover hand with circular motions 1” above screen Observe output for “hover” artifacts Observe output for “hover” artifacts

Finger Output Place three to five fingers on the board in a clicking motion Place three to five fingers on the board in a clicking motion Observe output Observe output Switch constantly between one to five finger clicks and observe output Switch constantly between one to five finger clicks and observe output

Questions?