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Group Member

	Ta-Chien Lin Visiting Scholar Email: tl2a@andrew.cmu.edu
	Office: Porter Hall B10 Lab: Porter Hall B6 Phone: 412-268-7100 Fax: 412-268-3890	Mailing Address: Department of ECE, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213-3890

[Research Interests]        [Project]

• Video Coding & DSP Target Development

• Face/Eye Tracking

  • A robust/efficient face-eye tracking system is an essential component of a face recognition system. Based on colour distribution models and deformable template, we aim to make the system more robust to indoor lighting conditions.

• Face Recognition

  • A universal "face space" is typically of 200~400 dimensions is needed for eigenface-based face recognition. We propose a hierarchical approach to reduce computational requirement.

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Hierarchical Face Recognition - Computational Load Reduction

Typical eigenface-based face recognition approach requires a face space of 200~400 dimensions. A query will involve computing 200~400 matrix calculations to derive the feature vector, and then identifying the best match in the feature database. This database can be viewed as a 1-level tree with N leaves (each leaf represents a class). The feature database can be represented as a binary tree; this transforms place a single N-class classification problem into m 2-class classification problems, with m ~  log (n). The computational requirement of matrix calculation is shown to be (m*d) < 200~400, where d is the dimension of face space needed to solve a 2-class problem.

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