sobel, canny, laplacian filter

import cv2




src = cv2.imread("normal.jpg", cv2.IMREAD_COLOR)
gray = cv2.cvtColor(src, cv2.COLOR_BGR2GRAY)

sobel = cv2.Sobel(gray, cv2.CV_8U, 1, 0, 3)
laplacian = cv2.Laplacian(gray, cv2.CV_8U, ksize=3)

canny = cv2.Canny(src, 100, 255)
cv2.imwrite('normal_canny.jpg', canny)
#cv2.save
#cv2.imshow("sobel", sobel)
#cv2.imshow("laplacian", laplacian)
#cv2.imshow("canny", canny)
cv2.waitKey()
cv2.destroyAllWindows()