Reference

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hardsketchbw

Arguments:

Description:

Apply hard B&W sketch effect on selected images.

Default values:

amplitude=1000, sampling=3, opacity=0.1, edge_threshold=20 and is_fast=0.

Example of use:

$ gmic image.jpg +hardsketchbw 200,70,0.1,10 median[-1] 2 +local reverse blur[-1] 3 blend[-2,-1] overlay endlocal
Command: image.jpg +hardsketchbw 200,70,0.1,10 median[-1] 2 +local reverse blur[-1] 3 blend[-2,-1] overlay endlocal
Command: image.jpg +hardsketchbw 200,70,0.1,10 median[-1] 2 +local reverse blur[-1] 3 blend[-2,-1] overlay endlocal
Command: image.jpg +hardsketchbw 200,70,0.1,10 median[-1] 2 +local reverse blur[-1] 3 blend[-2,-1] overlay endlocal