CImg stands for Cool Image: it is simple to use and efficient. . The CImg Library is a free C++ toolkit providing simple classes and functions to load, save, process and display images in your own C++ code. . It is highly portable and fully works on Unix/X11, Windows and MacOS X operating systems. It should compile on other systems as well (eventually without display capabilities). . It consists only of a single header file CImg.h that must be included in your program source. . It contains useful image processing algorithms for loading/saving, resizing/ rotating, filtering, object drawing (text, lines, faces, ellipses,..), etc. . Images are instancied by a class able to represent images up to 4-dimension wide (from 1-D scalar signals to 3-D volumes of vector-valued pixels), with template pixel types. . It depends on a minimal number of libraries: you can compile it with only standard C libraries. No need for exotic libraries and complex dependencies. . Additional features appear with the use of GraphicsMagick: install the GraphicsMagick package to be able to load and save compressed image formats (GIF,BMP,TIF,JPG,PNG,...). . Additional features appear with the use of LAPACK: link your code with the lapack library to be able to compute eigenvalues or eigenvectors of big matrices. WWW: http://cimg.sourceforge.net/