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: 3.5.5        Current pre-release: 3.6.0 (2025/08/04)

Reference
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hessian

Arguments:

  • { xx | xy | xz | yy | yz | zz }...{ xx | xy | xz | yy | yz | zz },_boundary_conditions    or
  • (no arg) :

Description:

Compute the hessian components (second derivatives) of selected images along specified axes.

boundary_conditions can be { 0:Dirichlet | 1:Neumann | 2:Periodic | 3:Mirror }.
(no arg) compute all significant components.

Default values:

boundary_conditions=1.

Example of use:

image.jpg hessian

Command: image.jpg hessian
Command: image.jpg hessian
Command: image.jpg hessian
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.