Creating texture data outside of a chart boundary

Details Creating texture data outside of a chart boundary Creating texture data outside of a chart boundary

2005-09-15

2009-10-20

Wang, Jin-Cheng (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Attributes

C345S419000, C345S420000, C345S421000, C345S423000, C345S619000, C345S621000, C345S623000

Reexamination Certificate

active

07605820

ABSTRACT:
Discontinuities along texture mapped seams of three-dimensional models may be reduced by creating and sampling texture data outside of chart boundaries. When a texel center is not within a chart boundary (a group of connected triangles in texture space) a phantom face is generated that includes the texel center. Phantom texture coordinates are created for each texel center that is covered by the phantom face. The phantom texture coordinates are used to read a texture sample from another chart in texture space that is adjacent to the chart boundary in model space, producing a smooth transition across the seam.

REFERENCES:
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Bruno Levy, et al., “Least Squares Conformal Maps For Automatic Texture Atlas Generation,” International Conference on Computer Graphics and Interactive Techniques: Proceedings of the 29thAnnual Conference On Computer Graphics and Interactive Techniques, San Antonio, Texas, 2002, pp. 362-371, ACM Press, NY, NY.
Michael S. Floater, “Mean Value Coordinates,” Aided Geometric Design, vol. 20, Issue 1 (Mar. 2003), pp. 19-27, Elsevier Science Publishers B.V., Amsterdam, The Netherlands.
P.V. Sander, et al., “Multi-Chart Geometry Images,” ACM International Conference Proceedings Series, Proceedings of the 2003 Eurographics/ACM SIGGRAPH Symposium on Geometry Processing, Aachen, Germany, 2003, pp. 146-155, vol. 43, Eurographics Association, Aire-la-Ville, Switzerland.

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