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
Table of Contents  ▸  List of Commands  ▸  Matrix Computation  ▸  meigen◀  invert    |    mproj  ▶

meigen

Arguments:

  • m>=1

Description:

Compute an approximation of the m largest eigenvalues and eigenvectors of selected symmetric matrices,

using the Arnoldi iteration method (https://en.wikipedia.org/wiki/Arnoldi_iteration).
A larger m goes with better numerical precision.

Example of use:

(1,0,0;0,2,0;0,0,3) +meigen 3

Command: (1,0,0;0,2,0;0,0,3) +meigen 3
Command: (1,0,0;0,2,0;0,0,3) +meigen 3
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.