VXL, the 'Vision-something-Library,' is a collection of open source C++ libraries for Computer Vision. The idea is to replace X with one of many letters, i.e. G (VGL) is a geometry library, N (VNL) is a numerics library, I (VIL) is an image processing library, etc. These libraries can be used for general scientific computing as well as computer vision. Some examples of usage can be found at http://sourceforge.net/projects/vxl/