Lee, Jong KwanNewman, Timothy S.Jean M. Favre and Kwan-Liu Ma2014-01-262014-01-262008978-3-905674-04-01727-348Xhttps://doi.org/10.2312/EGPGV/EGPGV08/017-024Techniques for accelerated opacity correction for over-sampled volume ray casting on commodity hardware are described. The techniques exploit processing capabilities of programmable GPUs and cluster computers. The GPU-based technique follows a fine-grained parallel approach that exposes to the GPU the inherent parallelism in the opacity correction process. The cluster computation techniques follow less finely-granular data parallel approaches that allow exploitation of computational resources with minimal inter-CPU communication. The performance improvements offered by the accelerated approaches over opacity correction on a single CPU are also exhibited for real volumetric datasets.Categories and Subject Descriptors (according to ACM CCS): I.3.1 [Computer Graphics]: Parallel processing, I.3.1 [Computer Graphics]: Graphics processors