**Intermediate Path Tracing and Merging** Working with [Fujun Luan](https://www.cs.cornell.edu/~fujun/), [Weilun Sun](http://sunweilun.github.io/), [Kun Xu](http://cg.cs.tsinghua.edu.cn/people/~kun/) (Inspired by Vertex Connection and Merging. Using intermediate paths and a path merging graph to increase path samples and improve path reusing) **PointContour: Interactive Surface Reconstruction on Point Cloud** Working with Yixin Zhuang, [Ming Zou](http://www.cse.wustl.edu/~zoum/), Zhao Fu, [Nathan Carr](http://www.adobe.com/technology/people/san-jose/nathan-carr.html), [Tao Ju](http://www.cse.wustl.edu/~taoju/) (A semi-automatic tool to generate surfaces via input point cloud and sketches drawn by users) **Anisotropic Density Estimation for Photon Mapping** [Fujun Luan](http://cg.cs.tsinghua.edu.cn/people/~fujun/), **Lifan Wu**, [Kun Xu](http://cg.cs.tsinghua.edu.cn/people/~kun/) Accepted to Computational Visual Media 2015 (An anisotropic filtering kernel for photon density estimation to handle anisotropic BRDFs)
