Patent ID: 9355456
Filing Date: 2016-05-31
CPC Classification: G06K,G06T,H04N

Claim Text:
1. A method comprising: computing a first difference image based on a difference between red pixel intensity and green pixel intensity of a set of pixels, the set of pixels being associated with a first eye region of an image, wherein the first eye region comprises a plurality of quadrantal regions; and the set of pixels comprise at least one pixel of an eye color defect region of at least one of the plurality of quadrantal regions of the first eye region and at least one pixel from a non-defect eye portion of the at least one of the plurality of quadrantal regions of the first eye region; processing the first difference image for computing at least one gradient and at least one projection associated with one or more gradient, wherein the one or more gradient comprises a first order gradient in a first direction and a first order gradient in a second direction different than the first direction; determining at least one central point based on the at least one projection; and computing the first eye color defect region based on the at least one central point and a plurality of red pixels of the set of pixels.