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ACM Transactions on Graphics (TOG), Volume 27 Issue 2, April 2008

N-symmetry direction field design
Nicolas Ray, Bruno Vallet, Wan Chiu Li, Bruno Lévy
Article No.: 10
DOI: 10.1145/1356682.1356683

Many algorithms in computer graphics and geometry processing use two orthogonal smooth direction fields (unit tangent vector fields) defined over a surface. For instance, these direction fields are used in texture synthesis, in geometry processing...

Sketching reality: Realistic interpretation of architectural designs
Xuejin Chen, Sing Bing Kang, Ying-Qing Xu, Julie Dorsey, Heung-Yeung Shum
Article No.: 11
DOI: 10.1145/1356682.1356684

In this article, we introduce sketching reality, the process of converting a freehand sketch into a realistic-looking model. We apply this concept to architectural designs. As the sketch is being drawn, our system periodically interprets...

Free-form motion processing
Scott Kircher, Michael Garland
Article No.: 12
DOI: 10.1145/1356682.1356685

Motion is the center of attention in many applications of computer graphics. Skeletal motion for articulated characters can be processed and altered in a variety of ways to increase the versatility of each motion clip. However, analogous...

A precomputed polynomial representation for interactive BRDF editing with global illumination
Aner Ben-Artzi, Kevin Egan, Frédo Durand, Ravi Ramamoorthi
Article No.: 13
DOI: 10.1145/1356682.1356686

The ability to interactively edit BRDFs in their final placement within a computer graphics scene is vital to making informed choices for material properties. We significantly extend previous work on BRDF editing for static scenes (with fixed...