这个matlab程序通过标准的hough变换，并指定圆半径的情况下，在二值图像中检测圆。-The matlab program through standard hough transform, and specify the radius, the two values in the detection of circular images.

Edge detection result should be enhanced using linear method like Median filter to remove the garbage around the pupil to gain clear pupil to determine perfect centre. Get the centre of the pupil by counting the number of black pixels (zero value

Edge detection result should be enhanced using linear method like Median filter to remove the garbage around the pupil to gain clear pupil to determine perfect centre. Get the centre of the pupil by counting the number of black pixels (zero value