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Content-Based Image Querying with Complex Wavelets: The Complex Discrete Wavelet Transform
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Image Querying with Complex Wavelets: Summary and Potential Future Work
(m11698)
Authors:
Tom Mowad
,
Venkat Chandrasekaran
Keywords:
complex discrete wavelet transform
,
complex wavelets
,
discrete wavelet transform
,
image querying
Subject:
Science and Technology
Language:
English
Popularity:
60.34%
Revised:
2003-12-16
Revisions:
3
Discrete Wavelet Transform: Main Concepts
(m10436)
Author:
Phil Schniter
Keywords:
Discrete Wavelet Transform
,
multiresolution
,
wavelet
Summary:
(Blank Abstract)
Subject:
Mathematics and Statistics,
Science and Technology
Language:
English
Popularity:
96.32%
Revised:
2005-09-20
Revisions:
13
Haar Wavelet Basis
(m10764)
Authors:
Roy Ha
,
Justin Romberg
Keywords:
basis
,
expansion
,
fourier
,
fourier series
,
haar
,
haar wavelet
,
hilbert
,
hilbert spaces
,
wavelet
,
wavelets
Summary:
This module gives an overview of wavelets and their usefulness as a basis in image processing. In particular we look at the properties of the Haar wavelet basis.
Subject:
Science and Technology
Language:
English
Popularity:
97.74%
Revised:
2006-07-19
Revisions:
8
Image Denoising via the Redundant Wavelet Transform
(m18833)
Authors:
Stephen Kruzick
,
Colleen Kenney
Keywords:
Bishrink
,
BLS-GSM
,
Denoising
,
Redundant
,
Simulation
,
Transform
,
Wavelet
Summary:
This report summarizes work done as part of the Wavelet Based Image Analysis PFUG under Rice University's VIGRE program. VIGRE is a program of Vertically Integrated Grants for Research and Education in the Mathematical Sciences under the direction of the National Science Foundation. A PFUG is a group of ... grant DMS?0739420.
[Expand Summary]
This report summarizes work done as part of the Wavelet Based Image Analysis PFUG under Rice University's VIGRE program. VIGRE is a program of Vertically Integrated Grants for Research and Education in the Mathematical Sciences under the direction of the National Science Foundation. A PFUG is a group of Postdocs, Faculty, Undergraduates and Graduate students formed round the study of a common problem. This module introduces the redundant discrete wavelet transform as well as two level dependent estimators that could potentially be used for image denoising, the Bishrink algorithm and the Bayesian Least Squares-Gaussian Scale Mixture algorithm. A simulation designed to evaluate the efficacies of each of these methods for the purpose of denoising astronomical image data is described, and its results are presented and discussed. This Connexions module describes work conducted as part of Rice University's VIGRE program, supported by National Science Foundation grant DMS?0739420.
[Collapse Summary]
Subject:
Mathematics and Statistics
Language:
English
Popularity:
82.78%
Revised:
2008-12-10
Revisions:
New
The Haar System as an Example of DWT
(m10437)
Author:
Phil Schniter
Keywords:
Discrete Wavelet Transform
,
Haar
,
scaling function
,
wavelet
Summary:
(Blank Abstract)
Subject:
Science and Technology
Language:
English
Popularity:
87.37%
Revised:
2005-10-05
Revisions:
11
Exploring High Dynamic Range Imaging: §8 Source Code
(m14254)
Authors:
Taylor Johnson
,
Sarah McGee
,
Robert Ortman
,
Tianhe Yang
Keywords:
code
,
dynamic
,
hdr
,
high
,
image
,
imaging
,
range
,
source
Summary:
This is the source code used to generate HDR images from LDR images, all the tone operators used to map back from HDR to LDR space, and the test code.
Subject:
Science and Technology
Language:
English
Popularity:
73.80%
Revised:
2006-12-25
Revisions:
4
Using and Troublshooting the LaTeX-CNXML Importer
(m17310)
Author:
Daniel Williamson
Keywords:
breaks
,
CNXML
,
content
,
help
,
IEEE
,
images
,
Importer
,
Importing
,
issues
,
LaTeX
,
math
,
mbox
,
problem
,
problems
,
references
,
template
,
text
,
tralics
,
Tralics
,
troublshooting
Summary:
This module is a beginner's guide to using and troubleshooting the LaTeX to CNXML importer. It can be used a companion to the Connexions LaTeX Importer tutorial at http://cnx.org/help/UsingLaTeX .
Subject:
Mathematics and Statistics
Language:
English
Popularity:
63.38%
Revised:
2009-09-21
Revisions:
6
Finite-Length Sequences and the DWT Matrix
(m10459)
Author:
Phil Schniter
Keywords:
circular convolution
,
DWT
,
DWT matrix
,
fast circular convolution
,
linear convolution
,
multiresolution
,
unitary matrix
,
wavelets
Summary:
Discrete-time implementation of the DWT.
Subject:
Science and Technology
Language:
English
Popularity:
69.64%
Revised:
2005-06-09
Revisions:
7
Discrete Time Processing of Continuous Time Signals
(m10797)
Author:
Justin Romberg
Keywords:
continuous time
,
discrete
,
discrete time processing
,
processing
Summary:
This module focus on the discrete time processing of continuous time signals.
Subject:
Science and Technology
Language:
English
Popularity:
86.14%
Revised:
2009-10-01
Revisions:
11
Exploring High Dynamic Range Imaging: §3.1 HDR Image Creation
(m14247)
Authors:
Taylor Johnson
,
Sarah McGee
,
Robert Ortman
,
Tianhe Yang
Keywords:
creation
,
dynamic
,
extrapolation
,
hdr
,
high
,
image
,
imaging
,
interpolation
,
range
Summary:
Given that no consumer grade digital cameras can produce images with more than at most about 12-bits per color channel, and 8-bits per color channel is more common, to manipulate HDR images (of say 32-bits per color channel), one must find a way to "estimate" the 8 ... levels (stops).
[Expand Summary]
Given that no consumer grade digital cameras can produce images with more than at most about 12-bits per color channel, and 8-bits per color channel is more common, to manipulate HDR images (of say 32-bits per color channel), one must find a way to "estimate" the 8-bits up to 32-bits. This creation of an HDR image can be accomplished using multiple images at different exposure levels (stops).
[Collapse Summary]
Subject:
Science and Technology
Language:
English
Popularity:
78.41%
Revised:
2006-12-25
Revisions:
2
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