November 2018
Intermediate to advanced
492 pages
12h 19m
English
Content preview from Hands-On Image Processing with Python
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Unsharp masking
Unsharp masking is a technique to sharpen images, where a blurred version of an image is subtracted from the image itself. The typical blending formula used for unsharp masking is as follows: sharpened = original + (original − blurred) × amount.
Here, amount is a parameter. The next few sections demonstrate how to implement this with the ndimage module of SciPy functions in Python.
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