Some small (but useful) applications


The program contained in this package are protected by the GPL license.


One implementation of DERICHE algorithm adapted to color images
Deriche
An algorithm which allows you to visualize 3D histograms of color images
This program was originally designed by Patrick Moreau
Cube
An algorithm which computes the mean squared error (in a given color space) between two images
EQM

The union-find algorithm : An example of implementation (see function region_oracle in file region to modify the segmentation criterion, The one proposed is quite simple).
Union-find

A quantization algorithm which allows you to simulate any top-down quantization algorithm using fixed axis.
Fixed axis

A quantization algorithm which allows you to simulate any top-down quantization algorithm using major axis.
Major axis

An implementation of Xiang97 bottom-up quantization algorithm.
Xiang

An implementation of the inverse colormap algorithms of:

An implementation of the trivial inverse colormap algorithm using the following heuristics : Click Here to download.
You have below the execution times in seconds of these heuristics on a Pentium II 350Mz, with the Lenna test image (480x512) and colormaps with increasing sizes (16 colors to 512). Note that the trivial algorithm (without any optimisation) is not always the worse one.


An algorithm to compare color images: Click Here to download

A quantization algorithm based on a split and merge approach with the first Inverse colormap algorithm (presented to CGIP:) Click Here to download

A quantization algorithm based on a split and merge approach (with the second inverse colormap algorithm (presented to CGIP:) Click Here to download
Luc Brun