Patent ID: 8649583
Filing Date: 2014-02-11
Classification: A61B,G06K,G06T

Abstract:
1. A pupil detection device that detects a pupil image in an eye area image, comprising: a first detection section that detects a cornea-reflected image that is a high luminance image area of the eye area image; an evaluation value calculation section that sets a plurality of line segments having a reference point of the cornea-reflected image as one end and having a predetermined length, and calculates a luminance evaluation value based on luminance of each pixel in each line segment and reference luminance; a specifying section that specifies a pupil center straight line passing through a center of the pupil image from among the plurality of line segments, based on the luminance evaluation value; and a second detection section that detects the pupil image based on a luminance state around the pupil center straight line or a luminance state of the pupil center straight line.