Fast, Portable 3D Scanning Using the Eyetronics Shapecam

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• Fast, Portable 3-D Scanning Using the Eyetronics
  Shapecam
• Jesse Spencer-SmithBeckman Fellow
• ITG ForumDecember 2, 2003

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Overview

• Shapecam in the movies
• Scanner comparison
• System overview
• Hardware
• Software
• Projects
• Face Database Project
• Infinite Dimensional Riemannian Face Space
• Dynamic Scanning

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Shapecam in the Movies
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Shapecam in the Movies
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Shapecam in the Movies
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Scanning ComparisonCyberscanner vs. Shapecam
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Scanning ComparisonCyberscanner vs. Shapecam

• 512x512 resolution fixed, cylindrical
• 512x512 texture maps, fixed
• Fixed scanning volume
• Not portable
• 30 seconds/scan
• 2 minute refresh
• Scan immediate available

• 300x300/image, unlimited images
• 3072x2048 texture maps/image
• Variable scanning volume
• Portable
• 2 seconds/scan
• 2 second refresh
• Post processing necessary

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Scanning ComparisonCyberscanner vs. Shapecam
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Scanning ComparisonCyberscanner vs. Shapecam
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System Overview Hardware

• Components
• Camera
• Texture flash
• Grid flash
• Monofocal/Zoom
• Platform
• Battery pack

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System Overview Software
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System Overview Software
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System Overview Software
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System Overview Software
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System Overview Software
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System Overview Software
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3-D Multiracial Database

• Currently no available 3-D multi-racial face
  databases
• Project currently funded for 400 faces
• Larger database planned with 8,000 faces
• Provide resource to study the processes
  underlying human recognition of faces
• Provide new statistical approaches to face
  identification, sex and race recognition

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Infinite Dimension Riemannian Face Space

• Faces approximated as surfaces
• Surfaces over a plane h (x, y)
• Spherical r (f, ?)
• Regions weighted
• Salient features
• Task demands
• Faces are functions

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Face Manifold
f2
c1 0, c2 1
MK f0 c1 u1 c2 u2 c1 , c2
arbitrary u1 f1 - f0 u2 f2 - f0
f0
f1
c1 c2 0
c1 1, c2 0
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Ongoing Work

• Automating eye and eyebrow extraction
• Providing real-time data collection using HD
  progressive scan camera 60 fps
• Finis.

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