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ACM Transactions on Graphics (TOG), Volume 27 Issue 1, March 2008

Synthesis and evaluation of linear motion transitions
Jing Wang, Bobby Bodenheimer
Article No.: 1
DOI: 10.1145/1330511.1330512

This article develops methods for determining visually appealing motion transitions using linear blending. Motion transitions are segues between two sequences of animation, and are important components for generating compelling animation streams...

Computation of rotation minimizing frames
Wenping Wang, Bert Jüttler, Dayue Zheng, Yang Liu
Article No.: 2
DOI: 10.1145/1330511.1330513

Due to its minimal twist, the rotation minimizing frame (RMF) is widely used in computer graphics, including sweep or blending surface modeling, motion design and control in computer animation and robotics, streamline visualization, and tool path...

Real-time rendering of textures with feature curves
Evgueni Parilov, Denis Zorin
Article No.: 3
DOI: 10.1145/1330511.1330514

The standard bilinear interpolation on normal maps results in visual artifacts along sharp features, which are common for surfaces with creases, wrinkles, and dents. In many cases, spatially varying features, like the normals near discontinuity...

SOHO: Orthogonal and symmetric Haar wavelets on the sphere
Christian Lessig, Eugene Fiume
Article No.: 4
DOI: 10.1145/1330511.1330515

We propose the SOHO wavelet basis—the first spherical Haar wavelet basis that is both orthogonal and symmetric, making it particularly well suited for the approximation and processing of all-frequency signals on the sphere. We obtain the...

Gesture modeling and animation based on a probabilistic re-creation of speaker style
Michael Neff, Michael Kipp, Irene Albrecht, Hans-Peter Seidel
Article No.: 5
DOI: 10.1145/1330511.1330516

Animated characters that move and gesticulate appropriately with spoken text are useful in a wide range of applications. Unfortunately, this class of movement is very difficult to generate, even more so when a unique, individual movement style is...

Realistic rendering of birefringency in uniaxial crystals
Andrea Weidlich, Alexander Wilkie
Article No.: 6
DOI: 10.1145/1330511.1330517

In this article we derive the complete set of formulas needed to generate physically plausible images of uniaxial crystals. So far no computer graphics publication contains all the formulas one needs to compute the interaction of light with such...

Radiance caching for participating media
Wojciech Jarosz, Craig Donner, Matthias Zwicker, Henrik Wann Jensen
Article No.: 7
DOI: 10.1145/1330511.1330518

In this article we present a novel radiance caching method for efficiently rendering participating media using Monte Carlo ray tracing. Our method handles all types of light scattering including anisotropic scattering, and it works in both...

Approximating Catmull-Clark subdivision surfaces with bicubic patches
Charles Loop, Scott Schaefer
Article No.: 8
DOI: 10.1145/1330511.1330519

We present a simple and computationally efficient algorithm for approximating Catmull-Clark subdivision surfaces using a minimal set of bicubic patches. For each quadrilateral face of the control mesh, we construct a geometry patch and a pair of...

Modeling and rendering of heterogeneous translucent materials using the diffusion equation
Jiaping Wang, Shuang Zhao, Xin Tong, Stephen Lin, Zhouchen Lin, Yue Dong, Baining Guo, Heung-Yeung Shum
Article No.: 9
DOI: 10.1145/1330511.1330520

In this article, we propose techniques for modeling and rendering of heterogeneous translucent materials that enable acquisition from measured samples, interactive editing of material attributes, and real-time rendering. The materials are assumed...