Image analysis – Applications – Target tracking or detecting
Reexamination Certificate
2007-03-27
2007-03-27
Wu, Jingge (Department: 2624)
Image analysis
Applications
Target tracking or detecting
Reexamination Certificate
active
10358067
ABSTRACT:
In a computer processing apparatus8,frames of image data received from a camera4are processed to track the eyes of a user2in each image. A 3D computer model of a head is stored, and search regions are defined in the 3D space corresponding to the eyes and eyebrows. For each image, pixels within the projection of the search regions from the 3D space to the 2D image space are sampled to determine a representative intensity value for each of the search regions. Positions for the eyes in the 3D space are then calculated based on the determined values. The 3D computer model and search bands are moved within the 3D space to align the eyes with the calculated eye positions. In this way, when the next image is processed, the search bands project into the image from a head configuration determined from the previous image. This facilitates reliable and accurate eye tracking.
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