Eyelid detection apparatus and program therefor

Details Eyelid detection apparatus and program therefor Eyelid detection apparatus and program therefor

2011-03-22

2011-03-22

Patel, Kanji (Department: 2624)

Image analysis

Applications

Personnel identification

C348S078000, C396S051000

Reexamination Certificate

active

07912251

ABSTRACT:
An eyelid detection apparatus includes edge image generating means for generating an edge image representing a magnitude of pixel value change per pixel in a predetermined direction in a region including an eye, based upon an image of the region; local peak value point searching means for searching a local peak value point, where the magnitude of pixel value change reaches a local peak value in the predetermined direction, in the edge image; and boundary point detecting means for detecting at least one of a first boundary point indicating a boundary between an upper eyelid and an eyeball and a second boundary point indicating a boundary between a lower eyelid and the eyeball, based upon a point which is shifted from the local peak value point in a direction towards the eyeball.

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