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ACM Transactions on Graphics (TOG), Volume 31 Issue 3, May 2012

On filtering the noise from the random parameters in Monte Carlo rendering
Pradeep Sen, Soheil Darabi
Article No.: 18
DOI: 10.1145/2167076.2167083

Monte Carlo (MC) rendering systems can produce spectacular images but are plagued with noise at low sampling rates. In this work, we observe that this noise occurs in regions of the image where the sample values are a direct function of the random...

K-clustered tensor approximation: A sparse multilinear model for real-time rendering
Yu-Ting Tsai, Zen-Chung Shih
Article No.: 19
DOI: 10.1145/2167076.2167077

With the increasing demands for photo-realistic image synthesis in real time, we propose a sparse multilinear model, which is named K-Clustered Tensor Approximation (K-CTA), to efficiently analyze and approximate large-scale...

Printing reflectance functions
Tom Malzbender, Ramin Samadani, Steven Scher, Adam Crume, Douglas Dunn, James Davis
Article No.: 20
DOI: 10.1145/2167076.2167078

The reflectance function of a scene point captures the appearance of that point as a function of lighting direction. We present an approach to printing the reflectance functions of an object or scene so that its appearance is modified correctly as...

Variational mesh decomposition
Juyong Zhang, Jianmin Zheng, Chunlin Wu, Jianfei Cai
Article No.: 21
DOI: 10.1145/2167076.2167079

The problem of decomposing a 3D mesh into meaningful segments (or parts) is of great practical importance in computer graphics. This article presents a variational mesh decomposition algorithm that can efficiently partition a mesh into a...

Symmetry-guided texture synthesis and manipulation
Vladimir G. Kim, Yaron Lipman, Thomas Funkhouser
Article No.: 22
DOI: 10.1145/2167076.2167080

This article presents a framework for symmetry-guided texture synthesis and processing. It is motivated by the long-standing problem of how to optimize, transfer, and control the spatial patterns in textures. The key idea is that symmetry...

Sparse zonal harmonic factorization for efficient SH rotation
Derek Nowrouzezahrai, Patricio Simari, Eugene Fiume
Article No.: 23
DOI: 10.1145/2167076.2167081

We present a sparse analytic representation for spherical functions, including those expressed in a Spherical Harmonic (SH) expansion, that is amenable to fast and accurate rotation on the GPU. Exploiting the fact that each band-l SH basis...

Topology-adaptive interface tracking using the deformable simplicial complex
Marek Krzysztof Misztal, Jakob Andreas Bærentzen
Article No.: 24
DOI: 10.1145/2167076.2167082

We present a novel, topology-adaptive method for deformable interface tracking, called the Deformable Simplicial Complex (DSC). In the DSC method, the interface is represented explicitly as a piecewise linear curve (in 2D) or surface (in...