January 2018
Intermediate to advanced
268 pages
6h 20m
English
Content preview from OpenCV 3.x with Python By Example - Second Edition
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Watershed algorithm
OpenCV comes with default implementations of watershed algorithms, at https://docs.opencv.org/trunk/d3/db4/tutorial_py_watershed.html, which theory says that any grayscale image can be viewed as a topographic surface where high intensity denotes peaks and hills, while low intensity denotes valleys. This algorithm is pretty famous and there are a lot of implementations available out there.
Consider the following image:
Let's select the regions depending on their topographic surface:
If you run the watershed algorithm on this, ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.