24 lines
1018 B
Markdown
24 lines
1018 B
Markdown
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# Sobel and Scharr filters for edge detection
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Edge detection via Sobel and Scharr filters capabilities in GIL are demonstrated by the program `sobel_scharr`, compiled from the sources `example/sobel_scharr.cpp`.
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## Synopsis
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`sobel_scharr input.png sobel|scharr output-x.png output-y.png`
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- The first argument must be the full path to an existing image in PNG format
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- The second argument is the type of the filter to apply, either `sobel` or `scharr`
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- The third argument is the full path to an image of the result of applying the filter in the x direction. The directory will *not* be created and must exist
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- The fourth and last argument is the full path to an image of the result of applying the filter in the y direction. The directory will *not* be created and must exist.
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## Specific requirements
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### Build requirements
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- A C++ compiler compliant with C++14 or above
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- The PNG library installed and configured.
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### Execution requirements
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`sobek_scharr` doesn't have any specific execution requirements.
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