Computing horizontal gradients with the Sobel filter

This example illustrates the use of the horizontal Sobel filter, to compute horizontal gradients.

../../../_images/plot_sobel_1.png

Python source code: plot_sobel.py

from skimage import data

# scikit-image has changes its API

try:

    from skimage import filters

except ImportError:

    from skimage import filter as filters

import matplotlib.pyplot as plt



text = data.text()

hsobel_text = filters.hsobel(text)



plt.figure(figsize=(12, 3))



plt.subplot(121)

plt.imshow(text, cmap='gray', interpolation='nearest')

plt.axis('off')

plt.subplot(122)

plt.imshow(hsobel_text, cmap='spectral', interpolation='nearest')

plt.axis('off')

plt.tight_layout()

plt.show()

Total running time of the example: 0.12 seconds ( 0 minutes 0.12 seconds)