Patent Number: 6,307,954

Title: Eye image recognition method, eye image selection method and system therefor

Abstract: An input image that includes an eye is divided into a plurality of blocks, and a mosaic image in which each of the blocks has a density value is produced. Among all the blocks, one having a small distance from a center point of the mosaic image and having a small density value is determined to be a block including the center of the pupil of the eye. Then, based on the determined block, a center position of the pupil in the input image is derived. Based on the density value of the block including the center of the pupil, a density threshold value is set. Then, based on the density threshold value, a two-valued image is produced from the input image. Among regions in the two-valued image which are darker than the density threshold value, one including the center position of the pupil is extracted as a pupil region.

Inventors: Suzaki; Masahiko (Tokyo, JP)

Assignee: Oki Electric Industry Co., Ltd.

International Classification: G06K 9/00 (20060101); G06T 5/00 (20060101); G06K 009/00 ()

Expiration Date: 10/23/2018