sobel滤波

import numpy
import argparse
import cv2


image = cv2.imread('yangmi.jpg')
cv2.imshow("Original", image)


gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
cv2.imshow("Gray", gray)


sobelx = cv2.Sobel(gray, cv2.CV_64F, 1, 0)
sobely = cv2.Sobel(gray, cv2.CV_64F, 0, 1)


sobelx = numpy.uint8(numpy.absolute(sobelx))
sobely = numpy.uint8(numpy.absolute(sobely))
sobelcombine = cv2.bitwise_or(sobelx,sobely)
#display two images in a figure
cv2.imshow("Edge detection by Sobel", numpy.hstack([gray,sobelx,sobely, sobelcombine]))


cv2.imwrite("1_edge_by_sobel.jpg", numpy.hstack([gray,sobelx,sobely, sobelcombine]))




if(cv2.waitKey(0)==27):
  cv2.destroyAllWindows()