Reference

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apply_curve

Arguments:

Description:

Apply curve transformation to image values.

Default values:

smoothness=1, x0=0, y0=100.

Example of use:

$ gmic image.jpg +apply_curve 1,0,0,128,255,255,0

Command: image.jpg +apply_curve 1,0,0,128,255,255,0
Command: image.jpg +apply_curve 1,0,0,128,255,255,0