Detection of Optic Disc in Retina Using Hough Transform

We propose a method to automatically locate the Optic Disc (OD) in fundus images of the retina. ?Based on the properties of the OD, our proposed method includes edge detection using the Canny method, and detection of circles using the Hough transform. The Hough transform assists in the detection of the center and radius of a circle that approximates the margin of the OD. Based on the feature that the OD is one of the brightest areas in fundus image, the potential circles can be detected by Hough transform.?