Contact the authors <hbenameur at yahoo.ca>, <Francois.Clement at inria.fr>, <Pierre.Weis at inria.fr>.

Ref-image: No gestalt inside

Version 1.1+pl0

Description
Documentation
Requirements
Download
Bug reports and mailing list
Authors
Acknowledgements
Copyright

Description

Ref-image is an an image segmentation program using optimal control techniques.

(a) [data] (b) [1 zone] (c) [2 zones]
(d) [3 zones] (e) [6 zones] (f) [10 zones]
Image segmentation using the refinement indicators technique. (a) initial image to be segmented. (b) to (f) first iterations of the algorithm giving segmentations with successively 1, 2, 3, 6 and 10 homogeneous zones.

The image segmentation problem can be viewed as an optimal control technique: the idea is to consider image segmentation as a parameter estimation problem. The parameter to estimate is the color of the pixels of the image. The adaptive parameterization technique builds iteratively an optimal representation of the parameter into uniform regions that form a partition of the domain, hence corresponding to a segmentation of the image (see Figure above). An error function is minimized during the iterations, and the partition of the image into regions is driven by the gradient of this error. The resulting segmentation algorithm inherits desirable properties from its optimal control origin: soundness, robustness, and flexibility.

Documentation

The Ref-image user's manual is available on line.

You can also download the manual as DVI, PS, and PDF files.

The manual only exists in the English version, volunteers to translate it are warmly welcome...

Requirements

You will need Objective Caml version 4.00 or higher to compile the sources, and the image OCaml library Grimage from the OCaml bazaar to link the program.

The OCaml image library Grimage, the OCaml user's additional library Ulib are also required to compile and link Ref-image. They are provided, and their configuration, compilation, and installation (in a private location) is fully automatic.

See the INSTALL file provided in the distribution for installation tips.

Download

The latest version (1.1+pl0) of the sources of Ref-image are available either via FTP or HTTP.

See the CHANGES file provided in the distribution.

Bug reports and mailing list

If you find a bug in Ref-image, please write to <refinement-bugs at inria.fr>.

If you want to get in touch with the implementors of Ref-image (to contribute some new ideas or lines of code), please write to <refinement-devel at inria.fr>.

If you want to get in touch with the users of Ref-image, please write to <refinement-users at inria.fr>.

Authors

The version 1.1+pl0 of Ref-image was developed from 2009 to 2014 by

Hend Ben Ameur <hbenameur at yahoo.ca>,
François Clément <Francois.Clement at inria.fr>, and
Pierre Weis <Pierre.Weis at inria.fr>.

Acknowledgments

The algorithm implemented in Ref-image comes from papers co-written with Guy Chavent <Guy.Chavent at inria.fr>.

Ref-image is entirely written in OCaml.

Copyright

This program is free software distributed under the BSD license. See the LICENSE file provided in the distribution.


Last modification date: Friday, February 28th, 2014 on lafleche by fclement.
Copyright © 2009-2014 Institut National de Recherche en Informatique et en Automatique (INRIA), all rights reserved.