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All-Frequency Relighting of Non-Diffuse Objects using Separable BRDF Approximation [article]

Rui Wang, John Tran, David Luebke
2004 Symposium on Rendering  
This paper presents a technique, based on pre-computed light transport and separable BRDF approximation, for interactive rendering of non-diffuse objects under all-frequency environment illumination.  ...  Using our technique, we demonstrate rendering of objects with several non-diffuse BRDFs under all-frequency, dynamic environment lighting at interactive rates.  ...  Acknowledgements The models used are courtesy of the Stanford 3D Scanning Repository. We would like to thank Nolan Goodnight for advice on our work.  ... 
doi:10.2312/egwr/egsr04/345-354 fatcat:ywwmm6h6erfkvjqz5udkw2n4ge

Interactive relighting with dynamic BRDFs

Xin Sun, Kun Zhou, Yanyun Chen, Stephen Lin, Jiaoying Shi, Baining Guo
2007 ACM SIGGRAPH 2007 papers on - SIGGRAPH '07  
We additionally describe a method for efficient handling of high-frequency specular reflections by separating them from the BRDF tensor representation and processing them using precomputed visibility information  ...  Abstract We present a technique for interactive relighting in which source radiance, viewing direction, and BRDFs can all be changed on the fly.  ...  Xin Sun and Jiaoying Shi were partially supported by the 973 Program of China (No.2002CB312105).  ... 
doi:10.1145/1275808.1276411 fatcat:4ce7ubzkqfbsvherkrz5dfsoyi

Interactive relighting with dynamic BRDFs

Xin Sun, Kun Zhou, Yanyun Chen, Stephen Lin, Jiaoying Shi, Baining Guo
2007 ACM Transactions on Graphics  
We additionally describe a method for efficient handling of high-frequency specular reflections by separating them from the BRDF tensor representation and processing them using precomputed visibility information  ...  Abstract We present a technique for interactive relighting in which source radiance, viewing direction, and BRDFs can all be changed on the fly.  ...  Xin Sun and Jiaoying Shi were partially supported by the 973 Program of China (No.2002CB312105).  ... 
doi:10.1145/1239451.1239478 fatcat:o57yt63rcfdsnpcqkgzsgbvemi

Interactive relighting with dynamic BRDFs

Xin Sun, Kun Zhou, Yanyun Chen, Stephen Lin, Jiaoying Shi, Baining Guo
2007 ACM Transactions on Graphics  
We additionally describe a method for efficient handling of high-frequency specular reflections by separating them from the BRDF tensor representation and processing them using precomputed visibility information  ...  Abstract We present a technique for interactive relighting in which source radiance, viewing direction, and BRDFs can all be changed on the fly.  ...  Xin Sun and Jiaoying Shi were partially supported by the 973 Program of China (No.2002CB312105).  ... 
doi:10.1145/1276377.1276411 fatcat:gnauxzdfjjfn7mpkwwwrixtj3e

All-frequency relighting of glossy objects

Rui Wang, John Tran, David Luebke
2006 ACM Transactions on Graphics  
relighting of glossy objects.  ...  We present a technique for interactive rendering of glossy objects in complex and dynamic lighting environments that captures interreflections and all-frequency shadows.  ...  The models used in this paper are courtesy of the Stanford University Computer Graphics Laboratory.  ... 
doi:10.1145/1138450.1138456 fatcat:f3z65guzf5f2nc4brrvsqfate4

All-frequency interactive relighting of translucent objects with single and multiple scattering

Rui Wang, John Tran, David Luebke
2005 ACM SIGGRAPH 2005 Papers on - SIGGRAPH '05  
We present a technique, based on precomputed light transport, for interactive rendering of translucent objects under all-frequency environment maps.  ...  We apply the two-pass hierarchical technique by Jensen et al. [2002] in the space of non-linearly approximated transport vectors, which allows us to efficiently evaluate transport vectors due to diffuse  ...  The 3D models are courtesy of the Stanford University Computer Graphics Lab. and the Suggestive Contour Gallery (http://www.cs.princeton.edu/gfx/proj/sugcon/models/)  ... 
doi:10.1145/1186822.1073333 fatcat:qscztkierze5xhkzjg75ns635a

Capturing Relightable Human Performances under General Uncontrolled Illumination

Guannan Li, Chenglei Wu, Carsten Stoll, Yebin Liu, Kiran Varanasi, Qionghai Dai, Christian Theobalt
2013 Computer graphics forum (Print)  
Finally, the high-quality all-frequency illumination is utilized to reconstruct the spatially-varying BRDF of the surface.  ...  Using these coarse reconstructions, we estimate the low-frequency component of the illumination in a spherical harmonics (SH) basis as well as the diffuse reflectance, and then utilize them to estimate  ...  (a) Ground-truth environment map, (b) low-frequency estimate in spherical harmonics, (c) all-frequency estimate assuming diffuse BRDF, (d) our approach: all-frequency estimation using full Phong BRDF.  ... 
doi:10.1111/cgf.12047 fatcat:hsxhjqbjtndrzo3d3twnsp3e3m

Capturing Reflectance - From Theory to Practice [article]

Hendrik P. A. Lensch, Michael Goesele, Gero M¨Uller
2007 Eurographics State of the Art Reports  
The tutorial present the set of current state-of-the art algorithms for acquiring and modeling 3D objects.  ...  For arbitrary (non-fluorescent, non-phosphorescent) materials, the reflection properties can be described by the 8D reflectance field of the surface, also called BSSRDF.  ...  Results Relighting Results Translucent Objects Translucent Objects translucent opaque -light transport through the object -scattering dampens high frequencies EG 2007 Tutorial: Capturing Reflectance -  ... 
doi:10.2312/egt.20071065 fatcat:vov7vxmgirct3bs72xxcpe5w24

Precomputation-Based Rendering

Ravi Ramamoorthi
2007 Foundations and Trends in Computer Graphics and Vision  
On the other hand, real-time rendering often fixes the object geometry and other attributes, such as relighting a static image for lighting design.  ...  Precomputationbased relighting and radiance transfer has a long history with a spurt of renewed interest, including adoption in commercial video games, due to recent mathematical developments and hardware  ...  My first PRT papers were in collaboration with Ren Ng, who coined the term "all-frequency" and provided the main motivation towards reaching that goal.  ... 
doi:10.1561/0600000021 fatcat:lruiwpvi75bevf5ietum5cn33q

A Theory Of Frequency Domain Invariants: Spherical Harmonic Identities for BRDF/Lighting Transfer and Image Consistency

D. Mahajan, R. Ramamoorthi, B. Curless
2008 IEEE Transactions on Pattern Analysis and Machine Intelligence  
First, we can develop more general algorithms for inverse rendering problems, which can directly relight and change material properties by transferring the BRDF or lighting from another object or illumination  ...  This paper develops a theory of frequency domain invariants in computer vision.  ...  Most glossy BRDFs (such as Torrance-Sparrow) are approximately radially symmetric, especially for non-grazing angles of reflection [RH01], [RH02].  ... 
doi:10.1109/tpami.2007.1162 pmid:18084053 fatcat:powhnh4pwfdtfnwcaofa6onlp4

Real-time BRDF editing in complex lighting

Aner Ben-Artzi, Ryan Overbeck, Ravi Ramamoorthi
2006 ACM SIGGRAPH 2006 Papers on - SIGGRAPH '06  
All-frequency effects (ranging from near-mirror reflections and hard shadows to diffuse shading and soft shadows) are rendered using a precomputation-based approach.  ...  Precomputed Radiance Transfer: The linearity of light transport has been used in a large body of work on relighting.  ...  Thanks to Jason Lawrence for contributing factored versions of measured BRDFs. This research was funded by a Sloan Research Fellowship and NSF grants #0305322 and #0446916.  ... 
doi:10.1145/1179352.1141979 fatcat:hge6xf3pafedppdbhjvzxr7vxy

Real-time BRDF editing in complex lighting

Aner Ben-Artzi, Ryan Overbeck, Ravi Ramamoorthi
2006 ACM Transactions on Graphics  
All-frequency effects (ranging from near-mirror reflections and hard shadows to diffuse shading and soft shadows) are rendered using a precomputation-based approach.  ...  Precomputed Radiance Transfer: The linearity of light transport has been used in a large body of work on relighting.  ...  Thanks to Jason Lawrence for contributing factored versions of measured BRDFs. This research was funded by a Sloan Research Fellowship and NSF grants #0305322 and #0446916.  ... 
doi:10.1145/1141911.1141979 fatcat:ib3n2zgeqjbojbscjk3ltgxmwu

A Theory of Spherical Harmonic Identities for BRDF/Lighting Transfer and Image Consistency [chapter]

Dhruv Mahajan, Ravi Ramamoorthi, Brian Curless
2006 Lecture Notes in Computer Science  
First, we can develop more general algorithms for inverse rendering problems, which can directly relight and change material properties by transferring the BRDF or lighting from another object or illumination  ...  They apply in a number of canonical cases, including single and multiple images of objects under the same and different lighting conditions.  ...  This work was supported by NSF grant #0430258 ("CyberTrust -Restore the Trustworthiness of Digital Photographs: Blind Detection of Digital Photograph Tampering"), as well as NSF grants #0098005, #0305322  ... 
doi:10.1007/11744085_4 fatcat:xdvpoieuqvaljd6xjp3xzy3qiy

A precomputed polynomial representation for interactive BRDF editing with global illumination

Aner Ben-Artzi, Kevin Egan, Ravi Ramamoorthi, Frédo Durand
2008 ACM Transactions on Graphics  
We use a high-quality representation for the BRDFs at the first bounce from the eye, and lower-frequency (often diffuse) versions for further bounces.  ...  This approximation correctly captures the general global illumination in a scene, including color-bleeding, near-field object reflections, and even caustics.  ...  Most of the indirect illumination is low-frequency, so we use our diffuse approximation for further bounces.  ... 
doi:10.1145/1356682.1356686 fatcat:p6n4uw6ghvbyzjzd2fensx4h54

Locally Adaptive Products for All-Frequency Relighting

Yaron Inger, Zeev Farbman, Dani Lischinski
2013 Computer graphics forum (Print)  
In this paper, we present a new approach for high-frequency scene relighting within the triple product framework.  ...  Efficient evaluation of triple product integrals using Haar wavelets enables near-interactive rendering of such scenes, while dynamically changing the lighting and the view.  ...  [NRH03] presented a method for all-frequency relighting that was limited to images with fixed view, or to diffuse geometry.  ... 
doi:10.1111/cgf.12027 fatcat:qmqe5wqvwrb2vose6j3vn6cj7u
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