Hybrid Forward Resampling and Volume Rendering

Hybrid Forward Resampling and Volume Rendering

Xiaoru Yuan, Minh X. Nguyen, Hui Xu and Baoquan Chen

Proceedings of the 2003 Eurographics/IEEE TVCG Workshop on Volume graphics (VG'03), pages 119-127. Tokyo, Japan, 7-8 June 2003

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In this paper, we present a framework that features hybrid forward resampling for discrete rendering. Specifically, we apply this framework to enhance volumetric splatting. In this approach, minified voxels are taken simply as points filtered in screen space; while magnified voxels are taken as spherical splats. In addition, we develop two techniques for performing accurate and efficient perspective splatting. The first one is to efficiently compute the 2D elliptical geometry of perspectively projected splats; the second one is to achieve accurate perspective reconstruction filter



In this paper, we presented a hybrid forward resampling framework and its application to various discrete rendering problems, such as texture mapping, 3D image warping, as well as volume rendering, with both effective and efficient antialiasing.for volume splatting we have further developed techniques for performing perspectively correct splatting with high quality and efficiency.

Voxels are taken as either splats or points depending on their projection size on screen (e.g., points: voxels a and b, splat: voxel c).

Perspective splatting reconstruction filter.


backward foot print projection	backward point projection	backward hybrid projection

forward foot print projection	forward point projection	forward hybrid projection

3D Checker Box viewed at different viewing directions crossing the 45 degree angle

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@InProceedings{hybrid:2003, author = {Xiaoru Yuan and Minh X. Nguyen and Hui Xu and Baoquan Chen}, title = {Hybrid forward resampling and volume rendering}, booktitle = {Proceedings of the 2003 Eurographics/IEEE TVCG Workshop on Volume graphics}, year = {2003}, isbn = {1-58113-745-1}, pages = {119--127}, location = {Tokyo, Japan}, doi = {http://doi.acm.org/10.1145/827051.827069}, publisher = {ACM Press}, }