Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Morio Sugita0
Takeshi Fujimatsu0
Masahiro Wakamori0
Date of Patent
March 25, 2008
0Patent Application Number
105552340
Date Filed
May 18, 2005
0Patent Primary Examiner
Patent abstract
Pupil candidate detection unit for detecting positions of pupil candidates in an eye image; and luminance difference calculation unit for obtaining a difference between a maximum value and a minimum value of an image data of an eye image on a circumference of a circle having a center at center coordinates of a pupil candidate and a predetermined radius are provided, and when the output of luminance difference calculation unit is larger than the predetermined threshold, the corresponding pupil candidate is determined not to be the pupil.
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