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Update filter example

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Martin Thoma 2017-01-12 14:57:41 +01:00
parent b73c601641
commit a2fee03a8a
3 changed files with 172 additions and 17 deletions
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tikz/convolution-linear/filter.py Normal file
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#!/usr/bin/env python
import scipy.signal
import numpy as np
image = [[104, 116, 116, 112, 58, 47, 47],
[109, 97, 114, 116, 105, 110, 45],
[116, 104, 111, 109, 97, 46, 100],
[101, 47, 109, 97, 115, 116, 101],
[114, 47, 99, 97, 116, 99, 97],
[116, 99, 97, 116, 46, 112, 104],
[112, 63, 118, 61, 49, 46, 48]]
filter_kernel = [[9, -3, -1],
[-6, 5, 3],
[2, -8, 0]]
filter_kernel = np.array(filter_kernel)
res = scipy.signal.convolve2d(image, filter_kernel[::-1, ::-1],
mode='same', boundary='fill', fillvalue=0)
print(res)