2.6.8.9. Synthetic dataΒΆ

The example generates and displays simple synthetic data.

plot synthetic data
import numpy as np
import scipy as sp
import matplotlib.pyplot as plt
rng = np.random.default_rng(27446968)
n = 10
l = 256
im = np.zeros((l, l))
points = l * rng.random((2, n**2))
im[(points[0]).astype(int), (points[1]).astype(int)] = 1
im = sp.ndimage.gaussian_filter(im, sigma=l / (4.0 * n))
mask = im > im.mean()
label_im, nb_labels = sp.ndimage.label(mask)
plt.figure(figsize=(9, 3))
plt.subplot(131)
plt.imshow(im)
plt.axis("off")
plt.subplot(132)
plt.imshow(mask, cmap=plt.cm.gray)
plt.axis("off")
plt.subplot(133)
plt.imshow(label_im, cmap=plt.cm.nipy_spectral)
plt.axis("off")
plt.subplots_adjust(wspace=0.02, hspace=0.02, top=1, bottom=0, left=0, right=1)
plt.show()

Total running time of the script: (0 minutes 0.076 seconds)

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