We introduce a new texture representation that combines standard sampling, to be bilinearly interpolated in smoothly varying regions, with customizable discontinuities, to model sharp boundaries between these regions. The structure consists of a standard signal texture, plus a second texture we call pinchmap, which encodes discontinuities along generally curved lines; at rendering time the fragment processor efficiently decodes this structure with a single access to each texture. We also present a fully automatic way to compute a pinchmap and signal texture pair, starting from an original high resolution image. The final result on the screen is a comparable visual quality for a fraction of the texture storage and with a negligible impact on performance.
Pinchmaps: Textures with customizable discontinuities / M. Tarini, P. Cignoni. - In: COMPUTER GRAPHICS FORUM. - ISSN 0167-7055. - 24:3(2005), pp. 557-568. ((Intervento presentato al 26. convegno Annual Conference of the Eurographics-Association tenutosi a Dublin nel 2005.
Pinchmaps: Textures with customizable discontinuities
M. Tarini;
2005
Abstract
We introduce a new texture representation that combines standard sampling, to be bilinearly interpolated in smoothly varying regions, with customizable discontinuities, to model sharp boundaries between these regions. The structure consists of a standard signal texture, plus a second texture we call pinchmap, which encodes discontinuities along generally curved lines; at rendering time the fragment processor efficiently decodes this structure with a single access to each texture. We also present a fully automatic way to compute a pinchmap and signal texture pair, starting from an original high resolution image. The final result on the screen is a comparable visual quality for a fraction of the texture storage and with a negligible impact on performance.File | Dimensione | Formato | |
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