资源简介
稀疏图像与信号处理的一个数值实验,利用非抽取小波进行图像去噪,对比正交小波和冗余小波的去噪效果。里面是完整的代码,用MATLAB可以运行。
代码片段和文件信息
function y = aconv(fx)
% aconv -- Convolution Tool for Two-Scale Transform
% Usage
% y = aconv(fx)
% Inputs
% f filter
% x 1-d signal
% Outputs
% y filtered result
%
% Description
% Filtering by periodic convolution of x with the
% time-reverse of f.
%
% See Also
% iconv UpDyadHi UpDyadLo DownDyadHi DownDyadLo
%
n = length(x);
p = length(f);
if p < n
xpadded = [x x(1:p)];
else
z = zeros(1p);
for i=1:p
imod = 1 + rem(i-1n);
z(i) = x(imod);
end
xpadded = [x z];
end
fflip = reverse(f);
ypadded = filter(fflip1xpadded);
y = ypadded(p:(n+p-1));
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
.CA.... 697 2018-12-05 12:36 My Project\aconv.m
.CA.... 352 2018-12-06 11:25 My Project\CircularShift.m
.CA.... 405 2018-12-05 12:38 My Project\DownDyadHi.m
.CA.... 384 2018-12-05 12:35 My Project\DownDyadLo.m
.CA.... 263222 2018-12-05 10:53 My Project\einstein.bmp
.CA.... 884 2018-12-05 12:34 My Project\FWT2_PO.m
.CA.... 2385 2018-12-05 12:33 My Project\FWT2_TI.m
.CA.... 240 2018-12-06 12:30 My Project\HardThresh.m
.CA.... 651 2018-12-05 12:40 My Project\iconv.m
.CA.... 989 2018-12-06 12:33 My Project\IWT2_PO.m
.CA.... 1640 2018-12-06 12:32 My Project\IWT2_TI.m
.CA.... 257 2018-12-05 12:39 My Project\lshift.m
.CA.... 8720 2018-12-05 12:23 My Project\MakeONFilter.m
.CA.... 397 2018-12-05 12:38 My Project\MirrorFilt.m
.CA.... 402 2018-12-05 12:33 My Project\packet.m
.CA.... 860 2018-12-05 22:43 My Project\ParseInputs.m
.CA.... 629 2018-12-05 12:19 My Project\quadlength.m
.CA.... 1704 2018-12-06 12:29 My Project\RedundantWavelet.m
.CA.... 271 2018-12-05 12:37 My Project\reverse.m
.CA.... 280 2018-12-05 12:59 My Project\rshift.m
.CA.... 382 2018-12-06 13:57 My Project\UpDyadHi.m
.CA.... 342 2018-12-06 13:52 My Project\UpDyadLo.m
.C.D... 0 2018-12-15 15:21 My Project
----------- --------- ---------- ----- ----
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