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What kind of edge detection is used Paint.NET program? It allows me to choose the angle of the edge not like the one used by opencv (Canny).

Here an example:

enter image description here enter image description here

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The edges doesn't have single pixel width, so it's probably not canny (no non-maxima supression). Could be a simple high-pass filter, whose pass-band is masked out in the Fourier domain in specific angles.

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  • $\begingroup$ Opencv can do that? $\endgroup$ – originof Jan 23 '12 at 6:47

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