Reference

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houghsketchbw

Arguments:

Description:

Apply hough B&W sketch effect on selected images.

Default values:

density=100, radius=3, threshold=100, opacity=0.1 and votesize=100%.

Example of use:

$ gmic image.jpg +houghsketchbw ,

Command: image.jpg +houghsketchbw ,
Command: image.jpg +houghsketchbw ,