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glyg/blocks.py

Created September 6, 2021 11:46
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slices blocks from images
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blocks.py
import numpy as np
img = np.random.poisson(size=(1024, 1024))
pad_x, pad_y = np.meshgrid(np.arange(-5, 5), np.arange(-5, 5))
cx = np.random.randint(0, img.shape[0], 12)
cy = np.random.randint(0, img.shape[0], 12)
xx = cx[:, None, None] + pad_x
yy = cy[:, None, None] + pad_y
blocks = img[xx, yy]
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