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Filter convolutions

Filters are an essential tool in image processing. They allow you to transform images based on intensity values surrounding a pixel, rather than globally.

2D array convolution. By Michael Plotke [CC BY-SA 3.0  (https://creativecommons.org/licenses/by-sa/3.0)], from Wikimedia Commons

For this exercise, smooth the foot radiograph. First, specify the weights to be used. (These are called "footprints" and "kernels" as well.) Then, convolve the filter with im and plot the result.

Cet exercice fait partie du cours

Biomedical Image Analysis in Python

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Exercice interactif pratique

Essayez cet exercice en complétant cet exemple de code.

# Set filter weights
weights = [[0.11, 0.11, ____],
           [0.11, ____, 0.11], 
           ____]
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