Method and apparatus for determining the position of eyes and fo

Details Method and apparatus for determining the position of eyes and fo Method and apparatus for determining the position of eyes and fo

1998-09-17

2000-10-17

Au, Amelia

Image analysis

Applications

Personnel identification

382117, 382291, G06K 900

Patent

active

061343390

ABSTRACT:
The present apparatus and method captures at least a pair of images in relatively quick succession with an illumination source being fired during the capture of one of the images. The illumination source is located adjacent to the optical lens or close to the optical axis of the camera. Next the illumination level of the images is compensated to make them equal in illumination. Following that an analysis of the images is performed to determine the difference between the illumination compensated images. After the illumination compensation the difference has to be caused by eye-defects or specular reflections from glasses. The pixel coordinates of the transitory eye-defect regions are recorded and analyzed to determine the spacing of the potential eye locations and/or the spatial structure of the eyes for plausibility. Once confirmed the coordinates are output and recorded.

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