资源简介
最全的小波多小波程序,里面有滤波器的算子、预滤波后滤波、多小波的分解与重构等等。
代码片段和文件信息
function [LH]=coef(flt)
%[LH]=coef(flt)
%
% This function returns coefficients(系数) of given scalar(标量) or matrix filter(矩阵滤波器) bank.
% Notice that sometimes zero coefficients are added in the beginning of
% a filter. This ensures correct shift of the synthesis(合成) filter against
% analysis one. For details see [SW].
%
% Input:
% flt string of characters name of the filter; for admissible(容许)
% names and brief descriptions of filters see below
%
% Output:
% L 这是低通滤波器的系数:
% r by r*l real array low-pass (scaling) filter;
% r is the number of scaling functions
% l is the number of terms in the dilation equation;
% coefficients in L are organized as follows: L=[C1 C2 ... Cl]//C1...Cl是r*r的矩阵
%
% H 这是高通滤波器的系数:
% r by r*m real array high-pass (wavelet) filter;
% m is the number of terms in the wavelet equation;
% coefficients in H are organized as follows: H=[D1 D2 ... Dm]
%
% Admissible(容许) Names of the Filters and Brief Description of Correspoding Basis:
% r is the number of scaling an wavelet functions//r是维数
% l is the number of scaling coefficients //l是低通滤波器系数的个数
% m is the number of wavelet coefficients //m是高通滤波器系数的个数
% A is the approximation order see [HSS] //A是逼近阶
% S is the lower bound(绑定) of Sobolev smoothness(平滑) see [D] [J])
%
% ‘haar‘ Haar 2 coefficient orthogonal(正交) symmetric(对称) scalar filter bank
% (see [D]); r=1 l=2 m=2 A=1 S=0.4999
% ‘d4‘ Daubechies 4 coefficient orthogonal scalar filter bank (see [D]);
% r=1 l=4 m=4 A=2 S=0.9999
% ‘la8‘ Daubechies 8 coefficient least asymmetric orthogonal scalar
% filter bank (see [D]); r=1 l=8 m=8 A=4 S=1.7757
%
%%%%%%%%%以下是双正交小波%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% ‘bi9‘ 9/7 coefficient symmetric biorthogonal(双正交) scalar filter bank//这个小波常用来作为编码的比较标准
% dual to ‘bi7‘ (see [D]); r=1 l=9 m=7 A=4 S=1.4101
% ‘bi7‘ 7/9 coefficient symmetric biorthogonal scalar filter bank
% dual to ‘bi9‘ (see [D]); r=1 l=7 m=9 A=4 S=2.1226
%
%
% ‘bi5‘ 5/3 coefficient symmetric biorthogonal scalar filter bank
% dual to ‘bi3‘ (see [D]); r=1 l=5 m=3 A=2 S=0.4408
% ‘bi3‘ 3/5 coefficient symmetric biorthogonal scalar filter bank
% dual to ‘bi5‘ (see [D]); r=1 l=3 m=5 A=2 S=1.4999
%
%%%%%%%%%以下是多重小波%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% ‘ghm‘ Geronimo-Hardin-Massopust orthogonal symmetric multi-filter bank
% (see [GHM] [SS]); r=2 l=4 m=4 A=2 S=1.4999
%
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
文件 65728 1999-11-17 23:48 multiwavelet\birthday.mat
文件 65728 1999-11-17 23:48 multiwavelet\boats.mat
文件 65728 1999-11-17 23:48 multiwavelet\camera.mat
文件 16668 2013-04-23 15:15 multiwavelet\coef.m
文件 3650 2013-04-23 15:32 multiwavelet\coef_dcov1D.m
文件 26778 2001-11-02 00:55 multiwavelet\coef_dcov2D.m
文件 5485 2013-04-23 16:00 multiwavelet\coef_prep.m
文件 141420 2001-11-04 20:48 multiwavelet\comp_lenna256_bih52sbih5ap_1024.ps
文件 141422 2001-11-04 20:50 multiwavelet\comp_lenna256_bih52sbih5ap_10240.ps
文件 141414 2001-11-04 21:04 multiwavelet\comp_lenna256_clclap_1024.ps
文件 626 1998-10-13 01:51 multiwavelet\Copyright.txt
文件 2560 2013-04-23 16:19 multiwavelet\dec1D_pe.m
文件 6755 2013-04-24 09:47 multiwavelet\example1D.m
文件 1426 2013-04-24 11:19 multiwavelet\keepnlarge.m
文件 65728 1999-11-17 23:48 multiwavelet\lenna256.mat
文件 1251 2013-04-25 09:37 multiwavelet\multiplot.m
文件 1514 2013-04-24 11:19 multiwavelet\postp1D_appe.m
文件 1176 2001-11-04 16:59 multiwavelet\postp1D_rr.m
文件 1626 2001-11-04 20:25 multiwavelet\prep1D_appe.m
文件 1337 2001-11-04 20:25 multiwavelet\prep1D_rr.m
文件 3596 2001-11-04 17:00 multiwavelet\rec1D_pe.m
文件 7022 2001-10-31 20:54 multiwavelet\th_my_image_noisy_2.ps
目录 0 2013-04-24 11:01 multiwavelet
----------- --------- ---------- ----- ----
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