Consistent Scene Editing by Progressive Difference Images (English)

In: Computer Graphics Forum   ;  34 ,  4  ;  41-51  ;  2015

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Even though much research was dedicated to the acceleration of consistent, progressive light transport simulations, the computation of fully converged images is still very time‐consuming. This is problematic, as for the practical use in production pipelines, the rapid editing of lighting effects is important. While previous approaches restart the simulation with every scene manipulation, we make use of the coherence between frames before and after a modification in order to accelerate convergence of the context that remained similar. This is especially beneficial if a scene is edited that has already been converging for a long time, because much of the previous result can be reused, e.g., sharp caustics cast or received by the unedited scene parts. In its essence, our method performs the scene modification stochastically by predicting and accounting for the difference image. In addition, we employ two heuristics to handle cases in which stochastic removal is likely to lead to strong noise. Typical scene interactions can be broken down into object adding and removal, material substitution, camera movement and light editing, which we all examine in a number of test scenes both qualitatively and quantitatively. As we focus on caustics, we chose stochastic progressive photon mapping as the underlying light transport algorithm. Further, we show preliminary results of bidirectional path tracing and vertex connection and merging.

Table of contents – Volume 34, Issue 4

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The tables of contents are generated automatically and are based on the data records of the individual contributions available in the index of the TIB portal. The display of the Tables of Contents may therefore be incomplete.

1
Stochastic Soft Shadow Mapping
Liktor, G. / Spassov, S. / Mückl, G. / Dachsbacher, C. | 2015
13
Portal‐Masked Environment Map Sampling
Bitterli, Benedikt / Novák, Jan / Jarosz, Wojciech | 2015
21
Extracting Microfacet‐based BRDF Parameters from Arbitrary Materials with Power Iterations
Dupuy, Jonathan / Heitz, Eric / Iehl, Jean‐Claude / Poulin, Pierre / Ostromoukhov, Victor | 2015
31
Physically Meaningful Rendering using Tristimulus Colours
Meng, Johannes / Simon, Florian / Hanika, Johannes / Dachsbacher, Carsten | 2015
41
Consistent Scene Editing by Progressive Difference Images
Günther, Tobias / Grosch, Thorsten | 2015
53
Unifying Color and Texture Transfer for Predictive Appearance Manipulation
Okura, Fumio / Vanhoey, Kenneth / Bousseau, Adrien / Efros, Alexei A. / Drettakis, George | 2015
65
Improved Half Vector Space Light Transport
Hanika, Johannes / Kaplanyan, Anton / Dachsbacher, Carsten | 2015
75
Probabilistic Connections for Bidirectional Path Tracing
Popov, Stefan / Ramamoorthi, Ravi / Durand, Fredo / Drettakis, George | 2015
87
Manifold Next Event Estimation
Hanika, Johannes / Droske, Marc / Fascione, Luca | 2015
99
Smooth Loops from Unconstrained Video
Sevilla‐Lara, L. / Wulff, J. / Sunkavalli, K. / Shechtman, E. | 2015
109
Radiometric Transfer: Example‐based Radiometric Linearization of Photographs
Li, Han / Peers, Pieter | 2015
119
Motion Aware Exposure Bracketing for HDR Video
Gryaditskaya, Yulia / Pouli, Tania / Reinhard, Erik / Myszkowski, Karol / Seidel, Hans‐Peter | 2015
131
Path‐space Motion Estimation and Decomposition for Robust Animation Filtering
Zimmer, Henning / Rousselle, Fabrice / Jakob, Wenzel / Wang, Oliver / Adler, David / Jarosz, Wojciech / Sorkine‐Hornung, Olga / Sorkine‐Hornung, Alexander | 2015
143
Wavelet Point‐Based Global Illumination
Wang, Beibei / Meng, Xiangxu / Boubekeur, Tamy | 2015
155
Modeling Luminance Perception at Absolute Threshold
Kellnhofer, Petr / Ritschel, Tobias / Myszkowski, Karol / Eisemann, Elmar / Seidel, Hans‐Peter | 2015
165
Illumination‐driven Mesh Reduction for Accelerating Light Transport Simulations
Reich, Andreas / Günther, Tobias / Grosch, Thorsten | 2015
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Frontmatter
| 2015
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