Error using integer wavelet transform

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Noor Fatima
Noor Fatima 2022-7-1
评论： Walter Roberson 2022-7-1
I'm interested in decomposing the image using integer wavelet transform.
I have tried the following
liftscheme = liftwave('haar','int2int');
data = imread('image.jpg'); % the image is in unit8
[cA cH cV cD]=lwt2(double(data),liftscheme);
But I'm getting the following error. My MATLAB version is R2022a
Error using parseParameterInputsML
Expected a parameter name.
Error in coder.internal.parseParameterInputs (line 91)
pstruct = parseParameterInputsML({},parms,options,varargin);
Error in lwt2>lwtParser (line 443)
pArg = coder.internal.parseParameterInputs(parms,poptions,varargin{:});
Error in lwt2 (line 73)
[LS,ext,level,wv,isI2I] = lwtParser(lx,varargin{:});

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回答（1 个）

Walter Roberson
Walter Roberson 2022-7-1
[cA, cH, cV, cD] = lwt2(double(data), 'LiftingScheme', liftscheme);
  2 个评论
Noor Fatima
Noor Fatima 2022-7-1
@Walter Roberson thank you for your respose but geeting the following error
Error using lwt2>lwtParser
Invalid data type. 'LiftingScheme' value must be a liftingScheme object.
Error in lwt2 (line 73)
[LS,ext,level,wv,isI2I] = lwtParser(lx,varargin{:});
Walter Roberson
Walter Roberson 2022-7-1
It appears that liftwave returns a struct rather than an object. See the compatibility section for replacement code
https://www.mathworks.com/help/wavelet/ref/liftwave.html

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