Method and apparatus for determining the position of eyes and for correcting eye-defects in a captured frame
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United States of America Patent
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Oct 17, 2000
Grant Date -
N/A
app pub date -
Sep 17, 1998
filing date -
Sep 17, 1998
priority date (Note) -
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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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