import cv def precornerdetect(image): # assume that the image is floating-point corners = cv.CloneMat(image) cv.PreCornerDetect(image, corners, 3) dilated_corners = cv.CloneMat(image) cv.Dilate(corners, dilated_corners, None, 1) corner_mask = cv.CreateMat(image.rows, image.cols, cv.CV_8UC1) cv.Sub(corners, dilated_corners, corners) cv.CmpS(corners, 0, corner_mask, cv.CV_CMP_GE) return (corners, corner_mask)