233 |
such as polygons or Bezi\'er patches, modifying their rendered appearance |
such as polygons or Bezi\'er patches, modifying their rendered appearance |
234 |
in some way (coloring\cite{catmull74}, bump mapping\cite{blinn78bump}, etc.). |
in some way (coloring\cite{catmull74}, bump mapping\cite{blinn78bump}, etc.). |
235 |
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236 |
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\iftechreport |
237 |
Due to the price of texturing-capable hardware, most uses |
Due to the price of texturing-capable hardware, most uses |
238 |
of texturing until the mid-1990s were in scientific |
of texturing until the mid-1990s were in scientific |
239 |
visualization and the entertainment industry. |
visualization and the entertainment industry. |
249 |
(often called texture |
(often called texture |
250 |
shading in that context)\iftechreport\cite{fuchs89pixelplanes,lastra95shading,% |
shading in that context)\iftechreport\cite{fuchs89pixelplanes,lastra95shading,% |
251 |
olano98pixelflow,mccool99textureshaders}\fi. |
olano98pixelflow,mccool99textureshaders}\fi. |
252 |
|
\fi |
253 |
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|
254 |
In addition to being drawn by hand or scanned, |
%In addition to being drawn by hand or scanned, |
255 |
textures have been synthesized procedurally\cite{perlin-noise-intro}, |
Textures have been synthesized in several ways: procedurally\cite{perlin-noise-intro}, |
256 |
using |
using |
257 |
other textures as a starting point |
other textures as a starting point |
258 |
(see, e.g., Heeger\cite{heeger95pyramid}), |
(see, e.g., Heeger\cite{heeger95pyramid}), |
272 |
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273 |
Psychophysical studies on texture perception have mostly concentrated |
Psychophysical studies on texture perception have mostly concentrated |
274 |
on pre-attentive |
on pre-attentive |
275 |
\emph{visual texture discrimination}\cite{julesz62visualpattern}, |
\emph{visual texture discrimination}\cite{julesz62visualpattern,bergen91theories}, |
276 |
the ability of human observers to effortlessly discriminate |
the ability of human observers to effortlessly discriminate |
277 |
pairs of certain textures (see Bergen\cite{bergen91theories} for a review). |
pairs of certain textures. |
278 |
Discrimination models can provide insight on the pre-attentive |
Discrimination models can provide insight on the pre-attentive |
279 |
processes underlying visual perception. |
processes underlying visual perception. |
280 |
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