Projects

FreeSG

FreeSG ("Free" as in "Free software" and "Free of bloat") is an compact, general-purpose, open-source scene-graph library. It implements a generic, extensible object/scene representation, designed to simplify such tasks as real-time rendering and geometrical queries. ... [More] One feature which distinguishes FreeSG from the variety of scene-graph libraries available is its ability to solve systems of logical (geometrical) constraints such as angles and distances, in order to define the relationship between elements of a scene, in a powerful and unambiguous way. [Less]

3dsearch

A 3d shape search engine written in java, based upon Spheric Harmonics transforming of a 3d shape. Current it support OFF file format only. In order to run the code, you need to download xxl package from http://dbs.mathematik.uni-marburg.de/?search=Research_Projects_XXL , and a FFT java ... [More] implementation from http://piotr.wendykier.googlepages.com/jtransforms. I uploaded several papers which I referred during building the codes, those papers are not written by me. The system uses Spheric Harmonics transform(SHT) to form a shape descriptor,a high-dimensional matrix. A MTree(or SlimTree) is used to index shape descriptors. For more information about MTree or SlimTree, please refer the above mentioned websites. In order to understand the source code better, you had better have some background knowledge about Spheric Harmonics, FFT etc. Any advice is welcomed. [Less]

cover tree in C++

A tiny implementation of cover trees in C++; using templates. The current implementation features a very fast insert method, and a generic iteration method. You can construct all kind of queries using the iteration method. There are a few examples in the code.