January 24, 2011 2D Minimum and Maximum Filters: Algorithms and Implementation Issues A while back I needed to implement fast minimum and maximum filters for images. I devised (what I thought was) a clever approximation scheme where…
June 15, 2010 Region Quadtrees in C++ (Original image by GoAwayStupidAI). Below are four C++ implementations of the region quadtree (the kind used for image compression, for example). The different implementations…
December 15, 2008 A simple texture algorithm – faster code and more results Faster Code A while back I wrote about a simple texture algorithm that I have been exploring. The Python implementation was very slow –…