GVU Technical Report Number:
GIT-GVU-98-24
Title:
Head Tracking using a Textured Polygonal Model
Authors:
Arno Schoedl
Antonio Haro
Irfan A. Essa
Abstract:
We describe the use of a three-dimensional textured model of the human
head under perspective projection to track a person's face. The system is
hand-initialized by projecting an image of a face onto the polygonal head
model. Tracking is achieved by finding the six translation and rotation
parameters to register a rendered image of the textured model with the
video image. We find the parameters by mapping the derivative of the error
with respect to the parameters to intensity gradients in the image, use a
robust estimator to pool the information and do gradient descent.
Keywords:
Computer vision, image-based modeling and tracking, head & pose tracking,
motion analysis, vision-based HCI
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