使用函数cv2.Laplacian()计算图像的边缘信息，opencv的Python实现

import cv2

img = cv2.imread('../data/ren.png')

laplacian = cv2.Laplacian(img, cv2.CV_64F)
laplacian = cv2.convertScaleAbs(laplacian)

cv2.imshow('laplacian', laplacian)
cv2.waitKey()
cv2.destroyAllWindows()
cv2.imwrite('../data/laplacian.jpg', laplacian)

原图

效果图

从效果上看，跟sobel算子运算出来的结果有差异