Pinchmaps: Textures with Customizable Discontinuities
Computer Graphics Forum, Volume 24, Number 3, page 557--568 - 2005
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abstract
We introduce a new texture representation that combines standard
bi-linearly interpolated samples, for smoothly varying regions, with customizable discontinuities for sharp boundaries
between these regions. It consists in a standard signal texture, plus a second texture we call pinchmap, which
encodes discontinuities along generally curved lines; this structure is stored in texture memory as a pair of
images and is effciently interpreted on commodity graphic hardware in the fragment shader. We also present a fully
automatic way to compute a pinchmap and signal texture pair from an much higher resolution image. We show
that the final effect on the screen is a comparable visual quality, for a fraction of the texture storage cost
and a very small impact on performance.
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BibTex references
@Article\{TC05,
author = "Tarini, Marco and Cignoni, Paolo",
title = "Pinchmaps: Textures with Customizable Discontinuities",
journal = "Computer Graphics Forum",
number = "3",
volume = "24",
pages = "557--568",
year = "2005",
note = "(Eurographics 2005 Conf. Proc.)",
url = "http://vcg-legacy.isti.cnr.it/Publications/2005/TC05"
}
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