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Patent Searching and Data


Title:
IMAGE PROCESSOR, METHOD FOR PROCESSING IMAGE, AND IMAGE PROCESSING PROGRAM
Document Type and Number:
Japanese Patent JP2009181424
Kind Code:
A
Abstract:

To provide a reliable and stable detection result without preparing a plurality of illuminating system when detecting a pupil from a face image under near-infrared illumination.

An image processing using Hough transformation includes: a face characteristic point detection means 1 which extracts pixels having characteristics of an inner eye corner and an outer eye corner, from an image; an eye area setting means 2 which sets a circle region as a processing subject region, the circle region having a diameter corresponding to a distance between the pixel of the inner eye corner and the pixel of an outer eye corner; an eye profile calculation means 4 which calculates the eye profile on the basis of the size of the longitudinal-direction concentration-gradient of the pixel located within the processing subject region; a casting-subject-region setting means 5 which sets a deltaic casting subject region extending from the pixel within the processing subject region, in a direction opposite to the concentration gradient; a casting subject region characteristic calculation means 6 which calculates the maximum pixel value in the casting-subject-region; a casting value calculation means 7 which inserts the eye profile and the maximum pixel to a casting value calculation function; and a casting calculation means 8 which sets the output of the casting value calculation function as a casting value.


Inventors:
MIYAMOTO SHINICHI
Application Number:
JP2008020959A
Publication Date:
August 13, 2009
Filing Date:
January 31, 2008
Export Citation:
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Assignee:
NEC CORP
International Classes:
G06T7/60; G06T1/00; G06T7/00
Attorney, Agent or Firm:
山下 穣平
永井 道雄