Patent ID: 8351776

Claim:
A method of processing a plurality of pixel values representing an image each of said plurality of pixel values being represented by a corresponding triplet of values containing a luminance value and a pair of chrominance values, said method comprising: comparing a first one of said pair of chrominance values corresponding to a first pixel value of said plurality of pixel values to a first range; comparing a second one of said pair of chrominance values corresponding to said first pixel value to a second range; comparing a sum of said pair of chrominance values corresponding to said first pixel value to a third range; determining that said first pixel value represents a point on a desired object if said first one of said pair of chrominance values lies within said first range, if said second one of said pair of chrominance values lies within said second range, and if said sum of said pair of chrominance values lies within said third range; and locating a first cluster of pixel locations representing said desired object.