文件名称:2013TSP

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  • matlab例程
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  • 上传时间:
  • 2019-01-12
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  • 13.73mb
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  • 提 供 者:
  • 陆嘻嘻
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介绍说明

通过并行压缩进行二维信号压缩,提出了一种利用并行压缩传感技术对二维信号进行压缩的新方案。根据这个原理,译码器的重新构造可以并行进行。通过对二维信号进行某些排列,可以确保所有列具有大致相同的密度级别,并且可以使用相同的测量矩阵进行采样。这样可以避免二维信号的矢量化,从而大大减小测量矩阵的尺寸。我们证明,如果排列良好,重建均方误差的上限会更紧。为了说明这一方案,我们将其应用于视频压缩并使用不同帧的排列有两种:参考帧的基于Z字形扫描的排列和非参考帧的基于块测试的排列。仿真结果表明,在相同的压缩比下,峰值信噪比比比在无置换情况下可提高3-7db左右。(we propose a new scheme to compress 2D signals using parallel compressed sensing. According to this seheme, the reeonstruction at the decoder can be performed in parallel. By performing certain permutation on a 2D signal, all columns are insured to have approximately the same density level and can be sampled using the same measurement matrix. In this way, vectorization of a 2D signal can be avoided, and thus the size of the measurement matrix can be dramatically reduced. We prove that with a good permutation, we can have a tighter upper bound on reconstruction mean square error. To illustrate this scheme, we apply it to video compression and use
two kinds of permutations for different fr a mes: the zigzag-scanbased permutation for reference fr a mes and the block-test-based permutation for non-reference fr a mes. Simulation results show that under the same compression ratio, the peak signal-to-noise ratio can be improved by approximately 3-7 dB compared to the case without permutation.)
相关搜索: 压缩感知
matlab

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下载文件列表

文件名大小更新时间
Tools 0 2013-04-06
Tools\l1magic 0 2013-04-06
Tools\l1magic\cgsolve.m 1693 2008-01-15
Tools\l1magic\l1eq_pd.m 6079 2013-04-02
Tools\l1magic\l1qc_logbarrier.m 3536 2011-04-26
Tools\l1magic\l1qc_newton.m 4427 2013-03-28
Tools\l1magic\README.txt 101 2013-04-06
Tools\psnr.m 236 2006-08-08
Tools\YUV 0 2013-04-06
Tools\YUV\CHANGES 2070 2007-11-21
Tools\YUV\GPL 15145 2003-05-23
Tools\YUV\LICENSE 796 2007-11-21
Tools\YUV\yuv2rgb.m 2839 2012-01-23
Tools\YUV\yuv_export.m 1002 2012-01-23
Tools\YUV\yuv_import.m 2091 2012-01-23
Tools\ZIGZAG_PERM 0 2013-04-06
Tools\ZIGZAG_PERM\invperm_zigzag.m 369 2013-04-06
Tools\ZIGZAG_PERM\perm_zigzag.m 382 2013-04-06
Tools\ZIGZAG_SCAN 0 2013-04-06
Tools\ZIGZAG_SCAN\invzigzag.m 2717 2010-03-22
Tools\ZIGZAG_SCAN\license.txt 1338 2010-03-24
Tools\ZIGZAG_SCAN\zigzag.m 2350 2010-03-22
video compression 0 2013-09-21
video compression\Data 0 2013-09-13
video compression\Data\akiyo_qcif_noperm.mat 460 2013-09-13
video compression\Data\akiyo_qcif_zigzagperm.mat 461 2013-09-13
video compression\Data\coastguard_qcif_noperm.mat 464 2013-09-13
video compression\Data\coastguard_qcif_zigzagperm.mat 465 2013-09-13
video compression\Data\foreman_qcif_noperm.mat 463 2013-09-13
video compression\Data\foreman_qcif_zigzagperm.mat 464 2013-09-13
video compression\demo_video_parallel_cs.m 2305 2013-04-06
video compression\Measurements 0 2013-09-13
video compression\Measurements\RandomStates.mat 543 2013-09-13
video compression\parallel_cs.m 1909 2013-04-06
video compression\plot_fig_nonref.m 1428 2013-04-06
video compression\plot_fig_ref.m 1405 2013-04-06
video compression\README.txt 2593 2013-04-06
video compression\script_demo_video_parallel_cs_0.m 653 2013-04-06
video compression\script_demo_video_parallel_cs_1.m 727 2013-04-06
video compression comparison 0 2013-04-06
video compression comparison\cs_sbhe_iter=200.mat 2417450 2013-04-04
video compression comparison\demo_recon_time_cs_sbhe.m 4106 2013-04-06
video compression comparison\demo_recon_time_pcs.m 2759 2013-04-06
video compression comparison\pcs_iter=200.mat 1326727 2013-04-04
video compression comparison\README.txt 2364 2013-04-06
video compression comparison\sensing_mtx.m 983 2013-04-06
video compression comparison\sensing_mtx_trans.m 1068 2013-04-06
README.txt 2032 2013-09-21
block cs comparison 0 2013-09-13
block cs comparison\ex_bcs_brec.m 1206 2013-09-13
block cs comparison\ex_bcs_spl_dct.m 1141 2013-09-13
block cs comparison\lena_bcs_brec.mat 1358464 2013-08-04
block cs comparison\lena_bcs_spl.mat 1049191 2013-08-05
block cs comparison\lena_pcs_zperm.mat 5599154 2013-08-04
empirical performance 0 2013-09-10
empirical performance\ex1.eps 12526 2013-08-22
empirical performance\ex1.fig 13070 2013-08-22
empirical performance\ex1.m 4292 2013-08-22
empirical performance\ex1.mat 2504236 2013-07-30
image compression 0 2013-09-13
image compression\Data 0 2013-05-30
image compression\Data\boat.512.tiff_noperm.mat 341 2013-04-06
image compression\Data\boat.512.tiff_zigzagperm.mat 341 2013-04-06
image compression\Data\cameraman.tif_noperm.mat 340 2013-04-06
image compression\Data\cameraman.tif_zigzagperm.mat 340 2013-04-06
image compression\Data\Lena.tiff_noperm.mat 336 2013-04-06
image compression\Data\Lena.tiff_zigzagperm.mat 336 2013-04-06
image compression\Data\Mandrill.tiff_noperm.mat 337 2013-05-30
image compression\Data\Mandrill.tiff_zigzagperm.mat 294 2013-05-31
image compression\Data\Peppers.tiff_noperm.mat 340 2013-04-06
image compression\Data\Peppers.tiff_zigzagperm.mat 340 2013-04-06
image compression\Data\psnr.fig 12556 2012-11-11
image compression\demo_parallel_cs_no_perm.asv 915 2013-05-31
image compression\demo_parallel_cs_no_perm.m 990 2013-08-07
image compression\demo_parallel_cs_zigzag_perm.asv 940 2013-08-04
image compression\demo_parallel_cs_zigzag_perm.m 1051 2013-08-12
image compression\Measurements 0 2013-04-06
image compression\Measurements\RandomStates.mat 543 2012-01-26
image compression\parallel_cs_no_perm.m 775 2013-03-28
image compression\parallel_cs_zigzag_perm.m 888 2012-12-06
image compression\plot_psnr.m 1398 2013-05-16
image compression\README.txt 2296 2013-04-06
inf_norm_change 0 2013-05-29
inf_norm_change\demo.m 863 2013-05-29
layer_model 0 2013-04-06
layer_model\layer_model.m 1448 2013-04-06
layer_model\layer_model_boat.fig 8365 2012-11-13
layer_model\layer_model_cameraman.fig 8214 2012-08-10
layer_model\layer_model_lena.fig 8411 2012-08-10
layer_model\layer_model_pepper.fig 8338 2012-08-10
lb_zperm 0 2013-04-06
lb_zperm\it_sum.m 333 2013-04-06
lb_zperm\layer_lb.m 804 2013-04-06
lb_zperm\plot_lb.m 1498 2013-04-06
lb_zperm\r0=0_r1=1.fig 12550 2012-11-23
lb_zperm\r0=0_r1=2.fig 12680 2012-11-23
lb_zperm\r0=3_r1=5.fig 14221 2012-11-23
ParallelCS 0 2013-09-21
ParallelCS\parallel_cs_decoder.m 1142 2013-04-06
ParallelCS\parallel_cs_decoder_l1magic.m 1117 2013-04-06

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