The Inverse Modeling and Geostatistics Project
Research People Papers Software Teaching

VISIM - Volume Average Integration Simulation

[pdf] Sequential simulation for linear inverse problems, Computers and Geosciences 34(1), pp 53-76, doi:10.1016/j.cageo.2007.02.003.

Download


VISIM 1.5 (January 2009): [tgz] [zip]

The latest source code can be downloaded using SVN:
svn co https://mgstat.svn.sourceforge.net/svnroot/mgstat/trunk/mGstat
and directly as a tar.gz file

Manual : [pdf]

Using VISIM


VISIM should feel familiar to anyone who has used GSLIB, as it is based on GSLIB code.
A Matlab interface to VISIM is available through the mGstat toolbox. Documentation for using the Matlab interface can be found here.

About


VISIM is an acronym for Volume Integration SIMulation.
VISIM is the groups first attempt to merge features of geostatistics and linear inverse theory into one complete theory.

For geostatisticians :
VISIM allow sequential simulation conditioning to noisy linear volume averages measurements of the underground. (for example as in x-ray tomography).
Both sequential Gaussian simulation and direct sequential simulation with histogram reproduction are supported.



for linear inverse theory :
VISIM allow efficient sampling of the a posteriori probability distribution of any linear inverse problem. Actual samples of the a posteriori PDF can be efficient generated.

The work is a collaboration between Andre Journel, Albert Tarantola, Klaus Mosegaard, Thomas Mejer Hansen and Yongshe Liu.