import cv2
import numpy as np
import matplotlib.pyplot as plt
img = cv2.imread('image.jpg', 0)
# Gradient using Sobel
grad_x = cv2.Sobel(img, cv2.CV_64F, 1, 0, ksize=3)
grad_y = cv2.Sobel(img, cv2.CV_64F, 0, 1, ksize=3)
gradient = cv2.magnitude(grad_x, grad_y)
# Laplacian
laplacian = cv2.Laplacian(img, cv2.CV_64F)
plt.subplot(1,3,1)
plt.imshow(img, cmap='gray')
plt.title('Original')
plt.axis('off')
plt.subplot(1,3,2)
plt.imshow(gradient, cmap='gray')
plt.title('Gradient')
plt.axis('off')
plt.subplot(1,3,3)
plt.imshow(laplacian, cmap='gray')
plt.title('Laplacian')
plt.axis('off')
plt.show()