This toolbox provides support to use OpenGL's rendering capability to project 3D triangular meshes onto an image plane. This has a few applications including extract the color of each face on the mesh given an observed image, determine the shadow area on the mesh given a light source direction and rendering a mesh.
Directly using OpenGL calls has the advantage of using more advanced graphics hardware capabilities, which results in faster rendering, and better control of anti-alliasing and other GL options. Version 2 also added the support of rendering a depth image.
This toolbox is used heavily to for the research of reflectance and illumination modeling published in Eurographics Symposium on Rendering 2006 and Siggraph 2007 Technical Sketch
1. Tianli Yu, Hongcheng Wang, Narendra Ahuja, Wei-Chao Chen, Sparse Lumigraph Relight by Illumination and Reflectance Estimation from Multi-View Images, Eurographics Symposium on Rendering (EGSR), 2006.
2.Tianli Yu, Hongcheng Wang, Narendra Ahuja, Wei-Chao Chen, Sparse Lumigraph Relight by Illumination and Reflectance Estimation from Multi-View Images, Technical Sketch, SIGGRAPH, 2006.
watch a youtube video of the result at: