资源简介
在matlab里面打开,可以直接使用。演示对32*32的图像矩阵进行3级NSCT变换。输出为单元数组,其子带排列顺序见mtr_nsctdec,与Contourlet程序等效。通过修改len_cut的来修改裁剪图像矩阵的大小和窗口位置
代码片段和文件信息
function [h0h1g0g1] = atrousfilters(fname);
% ATROUSFILTERS Generate pyramid 2D filters
%
% [h0 h1 g0 g1] = atrousfilters(fname type)
%
% Input:
% fname: Filter name. Available ‘fname‘ are:
% ‘9-7‘: Filters obtained from 9-7 1-D prototypes
% ‘maxflat‘: Filters derived from 1-D using maximally flat mapping function with 4 vanishing moments
% ‘pyr‘: Filters derived from 1-D using maximally flat mapping function with 2 vanishing moments
% ‘pyrexc‘: Same as pyr but exchanging two highpass filters
% Output:
% h0 h1 g0 g1: pyramid filters for 2-D nonsubsampled filter bank (lowpass and highpass)
% To test those filters (for the PR condition for the FIR case) verify that:
% conv2(h0g0) + conv2(g1 h1) = 1
% (replace + with - for even size filters)
% the filters have horizontal/vertical/diagonal symetry and can be implemented with
% symetric extension.
% filters designed by A. Cunha May 2004 (see Tech Report University of Illinois Set 2004 av. upon req.)
% SEE ALSO: dfilters nsscdec
switch fname
case ‘9-7‘
% Filters derived from 9-7 prototypes frame bounds A=0.91 B=1.101
h0 = [0.00010448733363597687 0.000835898669087815 0.0029256453418073525 0.005851290683614705 0.007314113354518382 ...
0.005851290683614705 0.0029256453418073525 0.000835898669087815 0.00010448733363597687;
0.000835898669087815 0.003080092825681339 0.001762583572331734 -0.007296122436400075 ...
-0.013629023704276572 -0.007296122436400075 0.001762583572331734 0.003080092825681339 0.000835898669087815 ;
0.0029256453418073525 0.001762583572331734 -0.01306636838062783 -0.02131840020457929 -0.018830187186854155 ...
-0.02131840020457929 -0.01306636838062783 0.001762583572331734 0.0029256453418073525;
0.005851290683614705 -0.007296122436400075 -0.02131840020457929 0.0740121520471188 0.16436627826336664 ...
0.0740121520471188 -0.02131840020457929 -0.007296122436400075 0.005851290683614705;
0.007314113354518382 -0.013629023704276572 -0.018830187186854155 0.16436627826336664 0.3245066567828517 0.16436627826336664 ...
-0.018830187186854155 -0.013629023704276572 0.007314113354518382;
0.005851290683614705 -0.007296122436400075 -0.02131840020457929 0.0740121520471188 0.16436627826336664 ...
0.0740121520471188 -0.02131840020457929 -0.007296122436400075 0.005851290683614705;
0.0029256453418073525 0.001762583572331734 -0.01306636838062783 -0.02131840020457929 -0.018830187186854155 ...
-0.02131840020457929 -0.01306636838062783 0.001762583572331734 0.0029256453418073525;
0.000835898669087815 0.003080092825681339 0.001762583572331734 ...
-0.007296122436400075 -0.013629023704276572 -0.007296122436400075 0.001762583572331734 0.003080092825681339 0.000835898669087815;
0.00010448733363597687 0.00083
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
目录 0 2016-12-21 18:16 NSCT_MAT-master\
文件 97 2016-12-21 18:16 NSCT_MAT-master\README.md
文件 19406 2016-12-21 18:16 NSCT_MAT-master\atrousfilters.m
文件 422 2016-12-21 18:16 NSCT_MAT-master\demo_cell.m
文件 325 2016-12-21 18:16 NSCT_MAT-master\demo_mtr.m
文件 13520 2016-12-21 18:16 NSCT_MAT-master\dfilters.m
文件 2614 2016-12-21 18:16 NSCT_MAT-master\dmaxflat.m
文件 259 2016-12-21 18:16 NSCT_MAT-master\getnsct.m
文件 921 2016-12-21 18:16 NSCT_MAT-master\mctrans.m
文件 955 2016-12-21 18:16 NSCT_MAT-master\modulate2.m
文件 374 2016-12-21 18:16 NSCT_MAT-master\mtr_atrousc.m
文件 1005 2016-12-21 18:16 NSCT_MAT-master\mtr_conv2.m
文件 973 2016-12-21 18:16 NSCT_MAT-master\mtr_efilter2.m
文件 814 2016-12-21 18:16 NSCT_MAT-master\mtr_extend2.m
文件 3661 2016-12-21 18:16 NSCT_MAT-master\mtr_nsctdec.m
文件 4094 2016-12-21 18:16 NSCT_MAT-master\mtr_nsdfbdec.m
文件 1507 2016-12-21 18:16 NSCT_MAT-master\mtr_nsfbdec.m
文件 1484 2016-12-21 18:16 NSCT_MAT-master\mtr_nssfbdec.m
文件 782 2016-12-21 18:16 NSCT_MAT-master\mtr_symext.m
文件 282 2016-12-21 18:16 NSCT_MAT-master\mtr_upsample2df.m
文件 1291 2016-12-21 18:16 NSCT_MAT-master\mtr_zconv2.m
文件 917 2016-12-21 18:16 NSCT_MAT-master\mtr_zconv2S.m
文件 1554 2016-12-21 18:16 NSCT_MAT-master\parafilters.m
文件 2071 2016-12-21 18:16 NSCT_MAT-master\resampz.m
文件 52332 2016-12-21 18:16 NSCT_MAT-master\zoneplate.png
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