Title:
PUPIL DETECTION DEVICE AND PUPIL DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2012/011221
Kind Code:
A1
Abstract:
Disclosed are a pupil detection device and a pupil detection method capable of stably detecting a pupil even if a large part of the pupil is hidden by a reflected image of the cornea, by positively using information regarding the reflected image of the cornea. A pupil detection device (100) comprises a circumferential state evaluation unit (105) which sets a plurality of line segments each having an end at a reference point in a reflected image of the cornea and having a predetermined length, and calculates a luminance evaluation value on the basis of the luminance of each pixel in each line segment and the reference luminance; a pupil center straight line calculation unit (106) which specifies, among the plurality of line segments, a pupil center straight line extending the center of the pupil image, on the basis of the luminance evaluation value; and a pupil searching unit (107) which detects a pupil image on the basis of the luminance state around the pupil center straight line.
Inventors:
TSUKIZAWA, Sotaro (())
築澤 宗太郎 (())
築澤 宗太郎 (())
Application Number:
JP2011/003411
Publication Date:
January 26, 2012
Filing Date:
June 15, 2011
Export Citation:
Assignee:
PANASONIC CORPORATION (1006, Oaza Kadoma Kadoma-sh, Osaka 01, 〒5718501, JP)
パナソニック株式会社 (〒01 大阪府門真市大字門真１００６番地 Osaka, 〒5718501, JP)
TSUKIZAWA, Sotaro (())
パナソニック株式会社 (〒01 大阪府門真市大字門真１００６番地 Osaka, 〒5718501, JP)
TSUKIZAWA, Sotaro (())
International Classes:
A61B3/113; G06T1/00
Attorney, Agent or Firm:
WASHIDA, Kimihito (8th Floor, Shinjuku First West Bldg. 1-23-7, Nishi-Shinjuku, Shinjuku-k, Tokyo 23, 〒1600023, JP)
Claims:
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