cwtftinfo2
金宝app支持二维CWT小波和傅里叶变换
描述
例子
带参数的可用小波
cwtftinfo2
CWTFTINFO2提供了使用FFT进行二维连续小波变换的可用小波的信息。小波由它们的傅里叶变换定义。给出小波的傅里叶变换的公式(简称为SNAME)将使用CWTFTINFO2(SNAME)显示。下表给出了每个小波的简短名称和相关参数:首先是参数名称,然后是默认值。WAV_Param_Table ={…'morl',默认值:omega0 = 6;Sigma = 1;= 1;'mexh',默认值:p = 2;Sigmax = 1; sigmay = 1; 'paul' , defaults: p = 4; 'dog' , defaults: alpha = 2; 'cauchy' , defaults: alpha = pi/6; sigma = 1; L = 4; M = 4; 'escauchy' , defaults: alpha = pi/6; sigma = 1; L = 4; M = 4; 'gaus' , defaults: p = 1; sigmax = 1; sigmay = 1; 'wheel' , defaults: sigma = 2; 'fan' , defaults: omega0 = 5.336; sigma = 1; epsilon = 1; J = 6.5; 'pethat' , defaults: No parameters. 'dogpow' , defaults: alpha = 1.25; p = 2; 'esmorl' , defaults: omega0 = 6; sigma = 1; epsilon = 1; 'esmexh' defaults: sigma = 1; epsilon = 0.5; 'gaus2' , defaults: p = 1; sigmax = 1; sigmay = 1; 'gaus3' , defaults: A = 1; B = 1; p = 1; sigmax = 1; sigmay = 1; 'isodog' , defaults: alpha = 1.25; 'dog2' , defaults = alpha = 1.25; 'isomorl' , defaults: omega0 = 6; sigma = 1; 'rmorl' , defaults: omega0 = 6; sigma = 1; epsilon = 1; 'endstop1' , defaults: omega0 = 6; 'endstop2' , defaults: omega0 = 6; sigma = 1; 'gabmexh' , defaults: omega0 = 5.336; epsilon = 1; 'sinc' , defaults: Ax = 1; Ay = 1; p = 1; omega0X= 0; Omega0Y = 0; }; The various wavelets may be grouped in families as follow: MORLET: 'morl' , 'esmorl' , 'rmorl' , 'isomorl' DOG: 'dog' , 'isodog' , 'dog2' , 'dogpow' GAUSS: 'mexh' , 'gaus' , 'gaus2' , 'gaus3' , 'esmexh' PAUL: 'paul' CAUCHY: 'cauchy' , 'escauchy' WHEEL: 'wheel', 'pethat' MISCELLANEOUS : 'endstop1' , 'endstop2' , 'gabmexh' , 'sinc' , 'fan' REFERENCES Two-Dimensional Wavelets and their Relatives J.-P. Antoine, R. Murenzi, P. Vandergheynst andS. Twareque Ali Cambridge University Press - 2004 Two-dimensional wavelet transform profilometry Fringe Pattern Analysis Using Wavelet Liverpool John Moores University http://www.ljmu.ac.uk See also CWTFT2
显示二维傅里叶变换的表达式
输入参数
wname
- - - - - -小波的名字
特征向量|字符串标量
小波名称,指定为字符向量或字符串标量。下表列出了二维CWT支持的小波及其相关参数:金宝app
小波的名字 | 参数 |
---|---|
“morl” |
{₀,6;“σ”1;‘ε’,1} |
“mexh” |
{“p”,2;“sigmax”1;sigmay, 1} |
“保罗” |
{“p”,4} |
“狗” |
{“阿尔法”,1.25} |
“柯西” |
{“阿尔法”,“π/ 6”;“σ”1;‘L’,4,“M”,4} |
“escauchy” |
{“阿尔法”,“π/ 6”;“σ”1;‘L’,4,“M”,4} |
“高斯” |
{“p”,1;“sigmax”1;sigmay, 1} |
“轮” |
{“σ”,2} |
“粉丝” |
{Omega0X, 5.336;“σ”1;‘ε’,1;“J”,6.5} |
“pethat” |
没有一个 |
“dogpow” |
{“阿尔法”,1.25;p, 2} |
“esmorl” |
{₀,6;“σ”1;‘ε’,1} |
“esmexh” |
{“σ”1;‘ε’,0.5} |
“gaus2” |
{“p”,1;“sigmax”1;sigmay, 1} |
“gaus3” |
{' A ', 1, ' B ' 1;“p”,1;“sigmax”1;sigmay, 1} |
“isodog” |
{“阿尔法”,1.25} |
“dog2” |
{“阿尔法”,1.25} |
“isomorl” |
{₀,6;“σ”,1} |
“rmorl” |
{₀,6;“σ”1;‘ε’,1} |
“endstop1” |
{₀,6} |
“endstop2” |
{₀,6;“σ”,1} |
“gabmexh” |
{₀,5.336;‘ε’,1} |
“sinc” |
{“斧头”,1;‘是的’,1;“p”,1;Omega0X, 0; Omega0Y, 0} |
例子:cwtftinfo2(保罗)
数据类型:字符
版本历史
在R2013b中引入
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