Reference

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transform_polar

Arguments:

Description:

Apply user-defined transform on polar representation of selected images.

Default values:

expr_radius=R-r, expr_rangle=a, center_x=center_y=50% and boundary_conditions=1.

Example of use:

$ gmic image.jpg +transform_polar[0] R*(r/R)^2,a +transform_polar[0] r,2*a
Command: image.jpg +transform_polar[0] R*(r/R)^2,a +transform_polar[0] r,2*a
Command: image.jpg +transform_polar[0] R*(r/R)^2,a +transform_polar[0] r,2*a
Command: image.jpg +transform_polar[0] R*(r/R)^2,a +transform_polar[0] r,2*a