US Patent 7,712,898
United States Patent and Trademark Office
University of Iowa Research Foundation (Iowa City, IA, US)
A method of classifying an optic nerve cup and rim of an eye from a retinal image comprising receiving a retinal image, determining a feature vector for a candidate pixel in the retinal image, and classifying the candidate pixel as a cup pixel or a rim pixel based on the feature vector using a trained classifier. The retinal image can be a stereo pair, the retinal image can be color or monochrome. The method disclosed can further comprise identifying an optic nerve, identifying an optic nerve cup and optic nerve rim, and determining a cup-to-disc ratio.
Abramoff, Michael D. and Kwon, Young Methods and systems for optic nerve head segmentation. US Patent 7,712,898 filed April 03, 2007 and issued May 11, 2010. https://ir.uiowa.edu/patents/505