PeopleFinder

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PeopleFinder

• Rhian Davies
• cs533

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Introduction

• Motivation
• Problem
• Approach
• Current state
• Perceptual test

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Motivation

• Aphasia
• involves language problems
• is neurogenic
• is acquired
• is not a problem of sensation of intellect

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Problem

• How can a set of images of faces be searched
  quickly?
• No reliance on text.
• Possible memory deficits (hierarchies cannot be
  too deep).
• Possibility that categories are disrupted.

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Approach

• PhotoMesa approach
• http//www.cs.umd.edu/hcil/photomesa/
• Perceptual systems ability to recognize an image
  after a fraction of a second exposure.
• Allan Paivio and Kal Csapo. Concrete image and
  verbal memory codes. Journal of Experimental
  Psychology, 80(2)279--285, 1969.

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PhotoMesa
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Current State

• Toolkit Piccolo
• PhotoMesa approach, combined with flashing image
  (whats optimal).
• Scaling on the fly.
• Staying within boundaries.
• Categorization.
• Brain damage and seizures.

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Perceptual Test

• Can faces be identified when flashed at a rate of
  16 images per second?

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Conclusion

• PeopleFinder
• a way to quickly find a face in a database of
  images using zooming and flashing.