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invert

Built-in command

Arguments:

• _use_LU={ 0:SVD | 1:LU },_lambda>=0

Description:

Inverse selected matrices (or compute Moore-Penrose pseudoinverse for non-square matrices).

SVD solver is slower but more precise than LU.
lambda is used only in the Moore-Penrose pseudoinverse, by estimating A^t.(A^t.A + lambda.Id)^-1.

Default values:

use_LU=0 and lambda=0.

Example of use:

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.