Advanced Adaptive Algorithms
The adaptive sampling strategy dramatically reduces the rendering time for high quality rendering – the higher quality or/and bigger data-sets, the more significant advantage over regular sampling strategy. However, adaptive ray-casting upon the projection plane and adaptive sampling along each individual ray do not map well to the SIMD architecture of modern GPU; therefore, it is a common perception that this technique is very slow and not suitable for interactive rendering. Multi-core CPUs, however, are a perfect fit for this technique and may benefit marvelously from an adaptive ray-casting strategy, making it suitable for interactive ultra-high quality volumetric rendering.
Read more about this topic: Volume Ray Casting
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