Find Corner by SubPix

The location of the corner of digital image processing.
void cvFindCornerSubPix (const CvArr * image, CvPoint2D32f * corners,.
int count, CvSize win, CvSize zero_zone,.
CvTermCriteria criteria);

image = image size as the original. floating-point 32-bit 1 channel.
corners = the value of the position angle of the input image. To locate the point of the output image.
count = number of runs in any of the points after round.
win = half the size of the desired size windows for example, if win = 5, so the size of the windows to find the 5 +5 +1 = 11 (to be positive because it includes a point to begin with) will be that size of the win to find = 11 x 11 itself.
zero_zone = the value to 0 to not want to be thinking.
criteria = highest value after the loop according to the count.