Graphics (TOG)


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ACM Transactions on Graphics (TOG), Volume 28 Issue 4, August 2009

Comprehensive biomechanical modeling and simulation of the upper body
Sung-Hee Lee, Eftychios Sifakis, Demetri Terzopoulos
Article No.: 99
DOI: 10.1145/1559755.1559756

We introduce a comprehensive biomechanical model of the human upper body. Our model confronts the combined challenge of modeling and controlling more or less all of the relevant articular bones and muscles, as well as simulating the physics-based...

Subtle gaze direction
Reynold Bailey, Ann McNamara, Nisha Sudarsanam, Cindy Grimm
Article No.: 100
DOI: 10.1145/1559755.1559757

This article presents a novel technique that combines eye-tracking with subtle image-space modulation to direct a viewer's gaze about a digital image. We call this paradigm subtle gaze direction. Subtle gaze direction exploits the fact that...

On centroidal voronoi tessellation—energy smoothness and fast computation
Yang Liu, Wenping Wang, Bruno Lévy, Feng Sun, Dong-Ming Yan, Lin Lu, Chenglei Yang
Article No.: 101
DOI: 10.1145/1559755.1559758

Centroidal Voronoi tessellation (CVT) is a particular type of Voronoi tessellation that has many applications in computational sciences and engineering, including computer graphics. The prevailing method for computing CVT is Lloyd's method, which...

Artistic rendering of mountainous terrain
Margarita Bratkova, Peter Shirley, William B. Thompson
Article No.: 102
DOI: 10.1145/1559755.1559759

Panorama maps are aerial view paintings that depict complex, three-dimensional landscapes in a pleasing and understandable way. Painters and cartographers have developed techniques to create such artistic landscapes for centuries, but the process...

Toward a perceptual space for gloss
Josh Wills, Sameer Agarwal, David Kriegman, Serge Belongie
Article No.: 103
DOI: 10.1145/1559755.1559760

We design and implement a comprehensive study of the perception of gloss. This is the largest study of its kind to date, and the first to use real material measurements. In addition, we develop a novel multi-dimensional scaling (MDS) algorithm for...

Improving Chen and Han's algorithm on the discrete geodesic problem
Shi-Qing Xin, Guo-Jin Wang
Article No.: 104
DOI: 10.1145/1559755.1559761

The computation of geodesic distances or paths between two points on triangulated meshes is a common operation in many computer graphics applications. In this article, we present an exact algorithm for the single-source all-vertices shortest path...

A simple approach to nonlinear tensile stiffness for accurate cloth simulation
Pascal Volino, Nadia Magnenat-Thalmann, Francois Faure
Article No.: 105
DOI: 10.1145/1559755.1559762

Recent mechanical models for cloth simulation have evolved toward accurate representation of elastic stiffness based on continuum mechanics, converging to formulations that are largely analogous to fast finite element methods. In the context of...

Photorealistic models for pupil light reflex and iridal pattern deformation
Vitor F. Pamplona, Manuel M. Oliveira, Gladimir V. G. Baranoski
Article No.: 106
DOI: 10.1145/1559755.1559763

We introduce a physiologically-based model for pupil light reflex (PLR) and an image-based model for iridal pattern deformation. Our PLR model expresses the pupil diameter as a function of the lighting of the environment, and is described by a...