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  1. Proceedings of the Fourth ACM SIGGRAPH / Eurographics conference on High-Performance Graphics (EGGH-HPG'12)
  2. Representing appearance and pre-filtering subpixel data in sparse voxel octrees
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Design and novel uses of higher-dimensional rasterization
Maximizing parallelism in the construction of BVHs, octrees, and k-d trees
Algorithm and VLSI architecture for real-time 1080p60 video retargeting
Reducing aliasing artifacts through resampling
Adaptive scalable texture compression
Adaptive image space shading for motion and defocus blur
kANN on the GPU with shifted sorting
Power efficiency for software algorithms running on graphics processors
Clustered deferred and forward shading
Parallel patch-based texture synthesis
High-quality parallel depth-of-field using line samples
SRDH: specializing BVH construction and traversal order using representative shadow ray sets
Scalable ambient obscurance
Representing appearance and pre-filtering subpixel data in sparse voxel octrees

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Representing appearance and pre-filtering subpixel data in sparse voxel octrees

Content Provider ACM Digital Library
Author Heitz, Eric Neyret, Fabrice
Abstract Sparse Voxel Octrees (SVOs) represent efficiently complex geometry on current GPUs. Despite the fact that LoDs come naturally with octrees, interpolating and filtering SVOs are still issues in current approaches. In this paper, we propose a representation for the appearance of a detailed surface with associated attributes stored within a voxel octree. We store macro- and micro-descriptors of the surface shape and associated attributes in each voxel. We represent the surface macroscopically with a signed distance field and we encode subvoxel microdetails with Gaussian descriptors of the surface and attributes within the voxel. Our voxels form a continuous field interpolated through space and scales, through which we cast conic rays. Within the ray marching steps, we compute the occlusion distribution produced by the macro-surface inside a pixel footprint, we use the microdescriptors to reconstruct light- and view-dependent shading, and we combine fragments in an A-buffer way. Our representation efficiently accounts for various subpixel effects. It can be continuously interpolated and filtered, it is scalable, and it allows for efficient depth-of-field. We illustrate the quality of these various effects by displaying surfaces at different scales, and we show that the timings per pixel are scale-independent.
Starting Page 125
Ending Page 134
Page Count 10
File Format PDF
ISBN 9783905674415
ISSN 20798679
DOI 10.2312/EGGH/HPG12/125-134
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2012-06-25
Publisher Place Goslar
Access Restriction Subscribed
Content Type Text
Resource Type Article
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