Abstract

Fundus photographs are routinely taken in an ophthalmology clinic to monitor feature changes in the suspected regions of the retina. For quantitative evaluation of subtle changes in the fundus from the photographs taken over a period of time using digital image processing, the fundus images have to be registered to a reference image, usually, the image of the same fundus taken earlier. The problem of registering one digital image with another reduces to that of finding local similarity between two structural data sets.

© 1987 Optical Society of America