Reference

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bsl

Built-in command

Arguments:

Description:

Compute the bitwise left shift of selected images with specified value, image or mathematical expression, or compute the pointwise sequential bitwise left shift of selected images.

(equivalent to shortcut command <<).

Example of use:

$ gmic image.jpg bsl 'round(3*x/w,0)' cut 0,255
Command: image.jpg bsl 'round(3*x/w,0)' cut 0,255