Temporally Coherent Irradiance Caching for High Quality Animation Rendering

Smyk, Miloslaw; Kinuwaki, Shinichi; Ďurikovič, Roman

doi:10.1111/j.1467-8659.2005.00865.x

Cited by 14 publications

(9 citation statements)

References 29 publications

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“…However, (7) shows that if the environment remains static starting from frame t 0 , we obtain ¼ 1. Therefore, (10) shows that w t K is infinite for any frame and, hence, record K is allowed to contribute at any time t > t 0 .…”

Section: Temporal Weighting Functionmentioning

confidence: 96%

“…The method described in [7] is based on a data structure called anchor. Using this structure, the algorithm detects changes in visibility and incoming radiance for each irradiance record during an animation sequence.…”

Section: Irradiance Caching and Final Gatheringmentioning

confidence: 99%

“…However, radiosity methods are prone to visual artifacts due to undersampling or high memory consumption and computational cost due to high-quality sampling. Therefore, other approaches, such as an extension of photon mapping [5] and irradiance caching [6], [7], have been proposed.…”

Section: Introductionmentioning

confidence: 99%

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Temporal Radiance Caching

Gautron

Bouatouch

Pattanaik

2007

IEEE Trans. Visual. Comput. Graphics

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Section: Temporal Weighting Functionmentioning

confidence: 96%

Section: Irradiance Caching and Final Gatheringmentioning

confidence: 99%

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Temporal Radiance Caching

Gautron

Bouatouch

Pattanaik

2007

IEEE Trans. Visual. Comput. Graphics

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“…• VPLs are sampled uniformly across the scene surfaces and their positions are fixed (similar to the anchor [SKDM05] and gather [HPB06] samples). We call those VPLs anchor lights.…”

Section: Temporally Coherent Lighting Computationmentioning

confidence: 99%

Render2MPEG: A Perception‐based Framework Towards Integrating Rendering and Video Compression

Herzog¹,

Kinuwaki²,

Seidel³

2008

Computer Graphics Forum

Self Cite

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Currently 3D animation rendering and video compression are completely independent processes even if rendered frames are streamed on-the-fly within a client-server platform. In such scenario, which may involve time-varying transmission bandwidths and different display characteristics at the client side, dynamic adjustment of the rendering quality to such requirements can lead to a better use of server resources. In this work, we present a framework where the renderer and MPEG codec are coupled through a straightforward interface that provides precise motion vectors from the rendering side to the codec and perceptual error thresholds for each pixel in the opposite direction. The perceptual error thresholds take into account bandwidth-dependent quantization errors resulting from the lossy compression as well as image content-dependent luminance and spatial contrast masking. The availability of the discrete cosine transform (DCT) coefficients at the codec side enables to use advanced models of the human visual system (HVS) in the perceptual error threshold derivation without incurring any significant cost. Those error thresholds are then used to control the rendering quality and make it well aligned with the compressed stream quality. In our prototype system we use the lightcuts technique developed by Walter et al., which we enhance to handle dynamic image sequences, and an MPEG-2 implementation. Our results clearly demonstrate many advantages of coupling the rendering with video compression in terms of faster rendering. Furthermore, temporally coherent rendering leads to a reduction of temporal artifacts

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“…Finally Velázquez-Armendáriz et al (2006) and Zhu et al (2005) accelerate the render cache on the GPU. Smky et al (2005) explore TC to speed up irradiance calculations using a cache structure called anchor. The idea is to permanently store and update (if needed) all the incoming radiance samples used to estimate the irradiance of an irradiance record.…”

Section: Image Warpingmentioning

confidence: 99%

Exploiting temporal coherence in real-time rendering

Scherzer

Yang

Mattausch

2010

ACM SIGGRAPH ASIA 2010 Courses

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Temporal coherence (TC), the correlation of contents between adjacent rendered frames, exists across a wide range of scenes and motion types in practical real-time rendering. By taking advantage of TC, we can save redundant computation and improve the performance of many rendering tasks significantly with only a marginal decrease in quality. This not only allows us to incorporate more computationally intensive shading effects to existing applications, but also offers exciting opportunities of extending high-end graphics applications to reach lower-spec consumer-level hardware.This course aims to introduce participants to the concepts of TC, and provide them the working practical and theoretical knowledge to exploit TC in a variety of shading tasks. It begins with an introduction of the general notion of TC in rendering, as well as an overview of the recent developments in this field. Then it focuses on a key data structure -the reverse reprojection cache, which is the foundation of many applications. The course proceeds with a number of extensions of the basic algorithm for assisting in multi-pass shading effects, shader antialiasing, casting shadows and globalillumination effects. Finally, several more general coherence topics beyond pixel reuse are introduced, including visibility culling optimization and object-space global-illumination approximations. For all the major techniques and applications covered, implementation and practical issues involved in development are addressed in detail.In general, we emphasize "know how" and the guidelines related to algorithm choices. After the course, participants are encouraged to find and utilize TC in their own applications and rapidly adapt existing algorithms to meet their requirements.The version of the course notes you are currently reading was created at September 23, 2010. The newest version of these course notes can be downloaded from this URL. Course PrerequisitesThis course should give a computer graphics practitioner, student or researcher the working and theoretical knowledge to implement state-of-the-art temporal coherence techniques. The content of this course is delivered by talks and course notes. Prerequisites incldue knowledge of basic real-time computer graphics, such as programmable shading pipeline, model transformation, rasterization and texture mapping. Experience in writing vertex and fragment shaders is preferred.

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Temporally Coherent Irradiance Caching for High Quality Animation Rendering

Cited by 14 publications

References 29 publications

Temporal Radiance Caching

Temporal Radiance Caching

Render2MPEG: A Perception‐based Framework Towards Integrating Rendering and Video Compression

Exploiting temporal coherence in real-time rendering

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