Total variation denoising can be used to produce cartoonish images; that is, piecewise-constant images, as demonstrated. The more we increase the weight, the flatter the textures (at the expense of fidelity to the input image):
image = io.imread('../images/me18.jpg')pylab.figure(figsize=(10,14))pylab.subplot(221), pylab.imshow(image), pylab.axis('off'), pylab.title('original', size=20)denoised_img = denoise_tv_chambolle(image, weight=0.1, multichannel=True)pylab.subplot(222), pylab.imshow(denoised_img), pylab.axis('off'), pylab.title('TVD (wt=0.1)', size=20)denoised_img = denoise_tv_chambolle(image, weight=0.2, multichannel=True)pylab.subplot(223), pylab.imshow(denoised_img), ...
