Hi there, time for some updates on my voxel rendering pipeline! Lot of work behind the scenes last month, and now taking some time to pause and reflect on where the interesting research opportunities are. The lowdown for people just joining in: I’m building a Sparse Voxel Octree raycaster, so …
After a short venture into suggestive contours, I’m back on my voxel raycaster. I’ve been implementing multiple light sources and phong lighting, as well as drasticly improving the way models are loaded – this allows for even bigger voxel sets to be used. Limiting factor is now my voxelizer itself, …
Just a quick piccie: thanks to optimizations in my out-of-core octree building algorithm, I can now render even bigger voxel fields (1024^3), which is about 107 million voxels. Reading in the data is the slowest part, the actual building of the octree is blazingly fast (< 500 ms), since the …
Transforming a polygon mesh into a 3D grid / voxel data set is still the quickest way to play with some interesting data in any voxel-based application. You can do this interactively on the GPU, using Eisemann/Décoret’s method, described in Single-pass GPU solid voxelization for real-time applications (2008). When it comes to …
In order to correctly voxelize larger meshes with configurable parameters (shell thickness, seperability parameters, …) I’m now implementing the method described in An Accurate Method for Voxelizing Polygon Meshes, by Jian Huang, Roni Yagel, Vassily Filippov and Yair Kurzion. In the paper, they provide a mathematical basis for voxelizing polygonal meshes, and …
After quite a struggle, I managed to compile the Walt Disney Animation Studios BRDF Explorer (released during SIGGRAPH) myself. Only to find out that a binary has been available for 2 days. I’ll post some quick info on it anyway, for those interested in compiling (future versions) themselves. Thanks go …
After a few weeks of optimizing and getting a lot of good C++ advice from Ares Lagae, I consider my CPU-based voxel raycaster as done. I now have a good framework to test some more interesting stuff on. It offers real-time performance, even for large voxel grids, and I’ve structured the …
This is my overview of the second day of the EGSR conference, which took place from 27-29th of June, in Paris, France. For a list of authors, and download links of all papers presented, I refer to Ke-Sen Huang’s excellent page. Another great EGSR overview can be found here. Edit: …
Note: You can find my overview of Day 2 and Day 3 on this blog as well. I have the privilege to attend the annual Eurographics Symposium on Rendering (EGSR) in Paris, France this year. The first warm day is behind us, and it’s time to reflect on and tell about …
During my PhD work, I’ve ran into a lot of practical issues with constructing and traversing sparse voxel Octrees. I’m introducing a new file format to store them, based on the .binvox file format by Michael Kashdan. The format is called .moctree, which stands for Morton-encoded Octree. It contains the leaf …