BCS-SPL-1.5-new
所属分类：波变换
开发工具：matlab
文件大小：5822KB
下载次数：36
上传日期：2013-09-30 01:41:54
上 传 者：
hongquang9
说明： Block-based random image sampling is coupled with a projectiondriven
compressed-sensing recovery that encourages sparsity in
the domain of directional transforms simultaneously with a smooth
reconstructed image. Both contourlets as well as complex-valued
dual-tree wavelets are considered for their highly directional representation,
while bivariate shrinkage is adapted to their multiscale
decomposition structure to provide the requisite sparsity constraint.
Smoothing is achieved via a Wiener filter incorporated
into iterative projected Landweber compressed-sensing recovery,
yielding fast reconstruction. The proposed approach yields images
with quality that matches or exceeds that produced by a popular,
yet computationally expensive, technique which minimizes total
variation. Additionally, reconstruction quality is substantially
superior to that from several prominent pursuits-based algorithms
that do not include any smoothing
文件列表:
BCS-SPL-1.5-1\BCS_SPL_CT_Decoder.m (5885, 2012-08-14)
BCS-SPL-1.5-1\BCS_SPL_DCT_Decoder.m (3018, 2013-09-22)
BCS-SPL-1.5-1\BCS_SPL_DCT_Decoder_2.m (3249, 2013-09-25)
BCS-SPL-1.5-1\BCS_SPL_DDWT_Decoder.m (5370, 2012-08-14)
BCS-SPL-1.5-1\BCS_SPL_DDWT_Decoder_2.m (5601, 2013-09-25)
BCS-SPL-1.5-1\BCS_SPL_DWT_Decoder.m (4406, 2012-08-14)
BCS-SPL-1.5-1\BCS_SPL_Encoder.m (1645, 2012-08-14)
BCS-SPL-1.5-1\BCS_SPL_GenerateProjection.m (2399, 2013-09-25)
BCS-SPL-1.5-1\circulant.m (158, 2013-09-25)
BCS-SPL-1.5-1\ContourletToolbox\backsamp.m (1119, 2003-09-11)
BCS-SPL-1.5-1\ContourletToolbox\barbara.png (177851, 2003-11-11)
BCS-SPL-1.5-1\ContourletToolbox\ChangeLog (2309, 2003-11-13)
BCS-SPL-1.5-1\ContourletToolbox\computescale.m (4967, 2003-11-05)
BCS-SPL-1.5-1\ContourletToolbox\Contents.m (3457, 2003-11-12)
BCS-SPL-1.5-1\ContourletToolbox\COPYING (691, 2003-11-12)
BCS-SPL-1.5-1\ContourletToolbox\decdemo.m (3334, 2003-11-11)
BCS-SPL-1.5-1\ContourletToolbox\denoisedemo.m (2390, 2003-11-13)
BCS-SPL-1.5-1\ContourletToolbox\dfbdec.m (2223, 2003-11-06)
BCS-SPL-1.5-1\ContourletToolbox\dfbdec_l.m (1700, 2003-11-06)
BCS-SPL-1.5-1\ContourletToolbox\dfbimage.m (1667, 2003-11-05)
BCS-SPL-1.5-1\ContourletToolbox\dfbrec.m (2012, 2003-11-10)
BCS-SPL-1.5-1\ContourletToolbox\dfbrec_l.m (1736, 2003-11-06)
BCS-SPL-1.5-1\ContourletToolbox\dfilters.m (2729, 2003-11-07)
BCS-SPL-1.5-1\ContourletToolbox\dup.m (755, 2003-04-11)
BCS-SPL-1.5-1\ContourletToolbox\efilter2.m (1103, 2003-04-11)
BCS-SPL-1.5-1\ContourletToolbox\extend2.m (1861, 2003-11-06)
BCS-SPL-1.5-1\ContourletToolbox\fbdec.m (2098, 2003-04-11)
BCS-SPL-1.5-1\ContourletToolbox\fbdec_l.m (1507, 2003-11-07)
BCS-SPL-1.5-1\ContourletToolbox\fbrec.m (2360, 2003-04-11)
BCS-SPL-1.5-1\ContourletToolbox\fbrec_l.m (1426, 2003-11-06)
BCS-SPL-1.5-1\ContourletToolbox\ffilters.m (485, 2003-04-11)
BCS-SPL-1.5-1\ContourletToolbox\ld2quin.m (856, 2003-04-11)
BCS-SPL-1.5-1\ContourletToolbox\ldfilter.m (662, 2003-11-05)
BCS-SPL-1.5-1\ContourletToolbox\lpdec.m (697, 2003-09-13)
BCS-SPL-1.5-1\ContourletToolbox\lprec.m (902, 2003-09-13)
BCS-SPL-1.5-1\ContourletToolbox\mctrans.m (854, 2003-11-05)
BCS-SPL-1.5-1\ContourletToolbox\modulate2.m (775, 2003-04-11)
BCS-SPL-1.5-1\ContourletToolbox\nlademo.m (5350, 2003-11-11)
BCS-SPL-1.5-1\ContourletToolbox\nlademo2.m (1186, 2003-11-12)
BCS-SPL-1.5-1\ContourletToolbox\pdfb2vec.m (1254, 2003-11-13)
... ...
==============================================================================
BCS-SPL
Version 1.5, 13-aug-2012
Copyright (C) 2009-2012 James E. Fowler
==============================================================================
OVERVIEW:
These MATLAB programs implement the Block Compressed Sensing -
Smoothed Projected Landweber (BCS-SPL) algorithm as described in
paper:
S. Mun and J. E. Fowler, "Block Compressed Sensing of Images
Using Directional Transforms," submitted to the IEEE
International Conference on Image Processing, 2009
Specifically, this code reproduces the experiment results of the
paper (Table 1), for the BCS-SPL-CT, BCS-SPL-DDWT, BCS-SPL-DWT, and
BCS-SPL-DCT algorithms. Respectively, the code for these is:
run_experiment_ct.m
run_experiment_ddwt.m
run_experiment_dwt.m
run_experiment_dct.m
This code relies on the Contourlet Toolbox
(http://www.ifp.illinois.edu/~minhdo/software/) as well as the
Wavelet Software package (http://eeweb.poly.edu/iselesni/WaveletSoftware/).
Both will need to reside within the current MATLAB search path.
Note that, since most of this code relies on random projections,
the results produced may differ slightly in appearance and
value from those of the paper.
==============================================================================
AVAILABILITY:
For updated versions of BCS-SPL, as well as the article on
which it is based, consult:
http://www.ece.msstate.edu/~fowler/
==============================================================================
COPYRIGHT AND LICENSE INFORMATION:
Copyright (C) 2009-2012 James E. Fowler
The programs herein are free software; you can redistribute
them and/or modify them under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
All programs herein are distributed in the hope that
they will be useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
the full text of the appropriate license for more details.
==============================================================================
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