How can I obtain edge map of optic disc from fundus image by using structured edge detection toolbox

I have an healthy and unhealthy image of optic disc in a fundus image.. and I want to obtain edge map of optic disc image after cropping it from fundus image.. and also feature extraction of an optic disc...plz help me..

Answer 1

[Image Analyst]

I'm sure someone has done that, so just find a paper in VisionBib's ophthalmology section and code it up.