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



Latest stable version: 4.0.4 (2026/08/19)

Reference
Table of Contents  ▸  List of Commands  ▸  Reptorian's Commands  ▸  rep_exponential_sigmoid_adjustment◀  rep_custom_map    |    rep_ellsworth_board  ▶

rep_exponential_sigmoid_adjustment

Arguments:

  • -1>=midpoint_shift>=1,sigmoid_level>=0,_sigmoid_shift,_endval

Description:

Assign exponential-sigmoid function into image.

 
midpoint_shift defines the center value point. If it at .5, then the center value point will between the largest value and the middle value.
sigmoid_level influence how much S-Curve will be applied. If 0, then there is no sigmoid function.
_sigmoid_shift shifts value
_endval determines the maximum value of output. Negative value will return a image where the maximum image is the positive value of the negative input. Positive value will return a image where the maximum value is the maximum value multiplied by it input.
 

Default values:

_sigmoid_shift=0,_endval=1

 
Author: Reptorian.
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.