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Implement and Research of High-Quality Global Illumination on GPU

Author: MiZuo
Tutor: ZhouKun；HouQiMing
School: Zhejiang University
Course: Applied Computer Technology
Keywords: Global illumination High quality GPGPU Virtual light source Photon mapping Spherical harmonics
CLC: TP391.41
Type: Master's thesis
Year: 2012
Downloads: 38
Quote: 0
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Abstract


Global illumination has always been a hot spot of computer graphics research . With film, animation , games , virtual reality, 3D roaming the field of application of the deepening of the popularity of computer-generated image realism have become increasingly demanding . Global illumination is the performance realism indispensable in modern movies and computer animation . Traditional global illumination algorithms are very complex , high-quality global illumination rendering is usually very time-consuming . With the ability to continuously enhance modern GPU computing and GPU parallel computing has become more sophisticated , modern GPU architecture for parallel computing accelerated graphics algorithms current research trends . In this paper, the two categories commonly used high - quality global illumination algorithms based algorithm based on photon mapping algorithm immediately radiometric modern GPU parallel computing architecture for both types of algorithms have been improved . Virtual point source (Virtual Point Light) GPU pruning algorithm , based on adaptive coloring point is determined by the parallel pruning of a set of virtual light source cluster to simulate the contribution of all the virtual light source , combined with the spherical harmonic expression to accelerate the global calculation of the illumination . The use of this algorithm in the same high-quality , 10 to 20 times faster than the CPU algorithm . In addition , the article also use the GPU implementation and optimization of the photon mapping algorithm . Part of this paper has been integrated into RenderAnts GPU rendering engine as global illumination solutions , verify the practicality of the algorithm .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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