Graphics (TOG)


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ACM Transactions on Graphics (TOG), Volume 29 Issue 1, December 2009

Geometry-aware direction field processing
Nicolas Ray, Bruno Vallet, Laurent Alonso, Bruno Levy
Article No.: 1
DOI: 10.1145/1640443.1640444

Many algorithms in texture synthesis, nonphotorealistic rendering (hatching), or remeshing require to define the orientation of some features (texture, hatches, or edges) at each point of a surface. In early works, tangent vector (or tensor)...

From image parsing to painterly rendering
Kun Zeng, Mingtian Zhao, Caiming Xiong, Song-Chun Zhu
Article No.: 2
DOI: 10.1145/1640443.1640445

We present a semantics-driven approach for stroke-based painterly rendering, based on recent image parsing techniques [Tu et al. 2005; Tu and Zhu 2006] in computer vision. Image parsing integrates segmentation for regions, sketching for curves,...

Face poser: Interactive modeling of 3D facial expressions using facial priors
Manfred Lau, Jinxiang Chai, Ying-Qing Xu, Heung-Yeung Shum
Article No.: 3
DOI: 10.1145/1640443.1640446

This article presents an intuitive and easy-to-use system for interactively posing 3D facial expressions. The user can model and edit facial expressions by drawing freeform strokes, by specifying distances between facial points, by incrementally...

Topology- and error-driven extension of scalar functions from surfaces to volumes
Giuseppe Patanè, Michela Spagnuolo, Bianca Falcidieno
Article No.: 4
DOI: 10.1145/1640443.1640447

The behavior of a variety of phenomena measurable on the boundary of 3D shapes is studied by modeling the set of known measurements as a scalar function f :P → R, defined on a surface P. Furthermore, the large amount of scientific data...

Fool me twice: Exploring and exploiting error tolerance in physics-based animation
Thomas Y. Yeh, Glenn Reinman, Sanjay J. Patel, Petros Faloutsos
Article No.: 5
DOI: 10.1145/1640443.1640448

The error tolerance of human perception offers a range of opportunities to trade numerical accuracy for performance in physics-based simulation. However, most prior work on perceptual error tolerance either focus exclusively on understanding the...

Edge-based image coarsening
Raanan Fattal, Robert Carroll, Maneesh Agrawala
Article No.: 6
DOI: 10.1145/1640443.1640449

This article presents a new dimensionally-reduced linear image space that allows a number of recent image manipulation techniques to be performed efficiently and robustly. The basis vectors spanning this space are constructed from a scale-adaptive...

A framework for modeling 3D scenes using pose-free equations
Daniel G. Aliaga, Ji Zhang, Mireille Boutin
Article No.: 7
DOI: 10.1145/1640443.1640450

Many applications in computer graphics require detailed 3D digital models of real-world environments. The automatic and semi-automatic modeling of such spaces presents several fundamental challenges. In this work, we present an easy and robust...

Accurate multidimensional Poisson-disk sampling
Manuel N. Gamito, Steve C. Maddock
Article No.: 8
DOI: 10.1145/1640443.1640451

We present an accurate and efficient method to generate samples based on a Poisson-disk distribution. This type of distribution, because of its blue noise spectral properties, is useful for image sampling. It is also useful for multidimensional...

Interactive generation of human animation with deformable motion models
Jianyuan Min, Yen-Lin Chen, Jinxiang Chai
Article No.: 9
DOI: 10.1145/1640443.1640452

This article presents a new motion model deformable motion models for human motion modeling and synthesis. Our key idea is to apply statistical analysis techniques to a set of precaptured human motion data and construct a low-dimensional...