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[Gzz-commits] manuscripts ./gzigzag.bib Paper/paper.tex
From: |
Janne V. Kujala |
Subject: |
[Gzz-commits] manuscripts ./gzigzag.bib Paper/paper.tex |
Date: |
Tue, 11 Mar 2003 08:14:52 -0500 |
CVSROOT: /cvsroot/gzz
Module name: manuscripts
Changes by: Janne V. Kujala <address@hidden> 03/03/11 08:14:52
Modified files:
. : gzigzag.bib
Paper : paper.tex
Log message:
texture space
CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/gzz/manuscripts/gzigzag.bib.diff?tr1=1.60&tr2=1.61&r1=text&r2=text
http://savannah.gnu.org/cgi-bin/viewcvs/gzz/manuscripts/Paper/paper.tex.diff?tr1=1.17&tr2=1.18&r1=text&r2=text
Patches:
Index: manuscripts/Paper/paper.tex
diff -u manuscripts/Paper/paper.tex:1.17 manuscripts/Paper/paper.tex:1.18
--- manuscripts/Paper/paper.tex:1.17 Sat Mar 8 10:13:33 2003
+++ manuscripts/Paper/paper.tex Tue Mar 11 08:14:52 2003
@@ -248,22 +248,25 @@
\subsection{Texture perception}
Psychological studies on texture perception have mostly concentrated
-on texture discrimination, the ability of human observers to discriminate
-pairs of textures.
-% XXX: segregation vs. discrimination
-
-First experiments on computer-generated, unnatural textures
-in the 60s \cite{julesz62visualpattern} led to
-proposals of discrimination models based on
-$N$th order statistics of pixels and connectivity
-structures of certain micropatterns.
+on \emph{texture discrimination}, the ability of human observers to
+discriminate pairs of textures.
+The term is often used interchangably with \emph{texture segregation},
+the more specific task of finding the border between areas of
+different textures (different phases of local characteristics at the
+border can segregate otherwise indiscriminable textures).
+
+First experiments on computer-generated, unnatural textures in the 60s
+\cite{julesz62visualpattern} led to proposals of discrimination models
+based on $N$th-order statistics (the joint distributions of all
+$N$-tuples of pixels for given $N$) and connectivity structures of
+certain micropatterns.
Statistical modeling of textures as samples from a probability
distribution on a random field as already seen in \cite{julesz62visualpattern}
in a simple form.
The most popualar computational approach is Markov random fields
-\cite{cross83markov, geman84stochastic}, where a texture
-is characterized by its local statistics.
+\cite{cross83markov, geman84stochastic}, where the value of each pixel
+depends only on the values of its neighborhood (local characteristics).
XXX: resolution-dependency?
Attempt to explain texture perception by the densities of textons
@@ -279,6 +282,19 @@
Filtering based approach, e.g., \cite{heeger95pyramid}.
Essentially a bank of linear filters is applied to the texture followed
by a nonlinearity and then another set of filters.
+
+Mapping texture appearance to an Euclidian texture space
+(see \cite{gurnsey01texturespace} and the references therein):
+in the reported experiments, three dimensions have been sufficient
+to explain most of the variation in the similarity judgements for
+artificial textures.
+However, the texture stimuli have been somewhat simple
+(no color, lack of frequency-band interaction, etc.).
+For some natural texture sets, three dimensions have also been
+sufficient, but often the semantic connections cause the
+similarity to be context-dependant, making it hard to assess the
+dimensionality.
+% XXX: this is something we should experiment with our textures
XXX: reviews
Index: manuscripts/gzigzag.bib
diff -u manuscripts/gzigzag.bib:1.60 manuscripts/gzigzag.bib:1.61
--- manuscripts/gzigzag.bib:1.60 Sat Mar 8 05:12:13 2003
+++ manuscripts/gzigzag.bib Tue Mar 11 08:14:52 2003
@@ -2572,6 +2572,10 @@
url =
"http://acad88.sahs.uth.tmc.edu/research/publications/iccs2001spatial.pdf"
}
address@hidden ------------------
address@hidden Texture perception
address@hidden ------------------
+
@article{ bergen88earlyvision,
author = "James R. Bergen and Edward H. Adelson",
title = "Early Vision and Texture Perception",
@@ -2601,6 +2605,15 @@
number = "2",
pages = "84--92",
year = "1962",
+}
+
address@hidden gurnsey01texturespace,
+ author = "Rick Gurnsey and David J. Fleet",
+ title = "Texture Space",
+ journal = "Vision Research",
+ volume = "41",
+ pages = "745--757",
+ year = "2001",
}
@comment ------------------
- [Gzz-commits] manuscripts ./gzigzag.bib Paper/paper.tex, Janne V. Kujala, 2003/03/06
- [Gzz-commits] manuscripts ./gzigzag.bib Paper/paper.tex, Janne V. Kujala, 2003/03/06
- [Gzz-commits] manuscripts ./gzigzag.bib Paper/paper.tex, Janne V. Kujala, 2003/03/08
- [Gzz-commits] manuscripts ./gzigzag.bib Paper/paper.tex,
Janne V. Kujala <=
- [Gzz-commits] manuscripts ./gzigzag.bib Paper/paper.tex, Janne V. Kujala, 2003/03/12
- [Gzz-commits] manuscripts ./gzigzag.bib Paper/paper.tex, Janne V. Kujala, 2003/03/13
- [Gzz-commits] manuscripts ./gzigzag.bib Paper/paper.tex, Janne V. Kujala, 2003/03/14
- [Gzz-commits] manuscripts ./gzigzag.bib Paper/paper.tex, Janne V. Kujala, 2003/03/23
- [Gzz-commits] manuscripts ./gzigzag.bib Paper/paper.tex, Janne V. Kujala, 2003/03/24
- [Gzz-commits] manuscripts ./gzigzag.bib Paper/paper.tex, Janne V. Kujala, 2003/03/29
- [Gzz-commits] manuscripts ./gzigzag.bib Paper/paper.tex, Janne V. Kujala, 2003/03/31
- [Gzz-commits] manuscripts ./gzigzag.bib Paper/paper.tex, Janne V. Kujala, 2003/03/31