Scan-in polygonal extraction of video images

Details Scan-in polygonal extraction of video images Scan-in polygonal extraction of video images

H - Electricity

04

N

375/15

H04N 7/26 (2006.01) G06T 9/20 (2006.01)

Patent

CA 1297600

ABSTRACT OF THE DISCLOSURE A video image is extracted and stored as a geometric figure by generating a binary pixel map of the image. The binary pixel map contains one bit for each pixel in the image, represen- tative of the value of a characteristic feature of that pixel relative to a threshold range. A crack following algorithm locates the border of a group of contiguous pixels all having the same binary value. This border defines the boundaries of the scanned image. It is smoothed by a recursive adaption technique to generate one or more polygons related to the shape of the image.

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