Research On Global Illuminated Animation Rendering

With the development of computer graphics, the computer animation is making great progress, and is being applicated in more and more areas. However, producing high qulity animations is very time consuming and will suffer from temporal aliasing using traditional frame-by-frame rendering system.To solve these two problems, the most noisy and time consuming part in animation rendering process are analysed by separating direct lighting from indirect lighting based on Photon Mapping method. And the Photon Mapping method with final-gather process is improved, so it can be used in a special animation rendering trick, which holds the temporal coherence by combining random seeds with photons. And for path tracing, we design and implement architecture for efficiently producing animations, which can compute multiple frames at once by expoiting the coherence between image samples in temporal domain. For each sample representing a given point in the scene we update its view-dependent components for each frame and add its contribution to pixels identified through the compensation of camera and object motion. The required visibility information is provided using a KD-Tree acceleration data structure for multiple frames simultaneously. The memory reusing technique is used to save memory and make it possible to render a long time animation at once. And we prove that many precise and costly global illumination techniques can be available in this rendering architecture.