Shape detection apparatus

Details Shape detection apparatus Shape detection apparatus

1997-12-05

1999-11-30

Couso, Von J.

Image analysis

Pattern recognition

Feature extraction

382291, G06K 946

Patent

active

059956631

ABSTRACT:
A shape detection apparatus able to accurately detect the image position of a target object even when the shape of the scanning window does not match the shape of the image of the target, and even when the scanning position of the scanning window does not precisely match the image position of the target is provided. This shape detection apparatus comprises a video image producer; an image memory; an approximate position evaluator for evaluating the approximate position of the image of the target; an edge point detector for defining plural sampling line windows having a predetermined length for detecting the image density at the detected approximate position of the image, and detecting image density edge points in these sampling line windows as the contour point positions of the target image; and a detection window setter for setting the contour lines of the target image from the detected contour point positions.

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Levine, Vision in Man and Machine McGraw-Hill, Inc., 1985, p. 523.

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