Image analysis – Applications – Biomedical applications
Patent
1993-06-14
1995-07-11
Mancuso, Joseph
Image analysis
Applications
Biomedical applications
382117, 382199, G06K 900
Patent
active
054328667
ABSTRACT:
The method for detecting an eye structure and its apparatus according to this invention examines an image having an eye and its vicinity of a human face photographed from the vertex to the jaws to detect an area positioned between a position where brightness changes from lightness to darkness and a position where brightness changes from lightness to darkness and then to lightness, and detects from the above area an area whose width is larger than the pupil's width and where an average of brightness values in the above area is darkest as the upper eyelid area. And, the inner canthus, outer canthus and their adjacent upper eyelid line are detected by finding the darkest point on the above image to detect the inner canthus and outer canthus points and their adjacent dot groups which become candidates for the upper eyelid line, and by carrying out the logical OR between the above upper eyelid area and the above dot groups.
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Okada et al, "Extract of Characteristic Line from Line Drawing of Face", Research Report #58, Kogaksin University, Apr. 1985, pp. 208-215.
Mancuso Joseph
NEC Corporation
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