Canny edge detector

Image edge detection algorithm / From Wikipedia, the free encyclopedia

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The Canny edge detector is an edge detection operator that uses a multi-stage algorithm to detect a wide range of edges in images. It was developed by John F. Canny in 1986. Canny also produced a computational theory of edge detection explaining why the technique works.

The Canny edge detector applied to a color photograph of a steam engine.
The original image.

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