1-edge.py

import cv2 as cv2
import numpy as np
import matplotlib.pyplot as plt
from skimage import data
from scipy.ndimage import gaussian_laplace

# Load a greyscale test image (uint8, values 0–255)
image = data.camera()
 
fig, ax = plt.subplots(figsize=(5, 5))
ax.imshow(image, cmap='gray')
ax.set_title('Original image')
ax.axis('off')
plt.tight_layout()
plt.show()