G'MIC - GREYC's Magic for Image Computing: A Full-Featured Open-Source Framework for Image Processing

Reference

Table of Contents ▸ List of Commands ▸ Warpings ▸ transform_polar

◀ symmetrize | twirl ▶

transform_polar

Arguments:

"expr_radius",_"expr_angle",_center_x[%],_center_y[%],_boundary_conditions={ 0:Dirichlet | 1:Neumann | 2:Periodic | 3:Mirror }

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=3.

Example of use:

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

G'MIC - GREYC's Magic for Image Computing: A Full-Featured Open-Source Framework for Image Processing

G'MIC is an open-source software distributed under the CeCILL free software licenses (LGPL-like and/or
GPL-compatible). Copyrights (C) Since July 2008, David Tschumperlé - GREYC UMR CNRS 6072, Image Team.