High Quality Content by WIKIPEDIA articles! 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, ie. 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://apps.sourceforge.net/trac/vxl/wiki/Q%26A