How to convert processed 2D wavelet subspace back to the form of original 1D result

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Becket Hui 2012-8-9

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https://ww2.mathworks.cn/matlabcentral/answers/45704-how-to-convert-processed-2d-wavelet-subspace-back-to-the-form-of-original-1d-result

关闭： MATLAB Answer Bot 2021-8-20

Hello all, I have a question regarding the wavedec2 function.

My goal is to perform some algorithm in the approx and each detail sub-spaces in their 2D form. There is a semi-convenient way (though most programmer would definitely prefer entering '1,2,3' instead of 'V,H,D') to extract the coefficients and recover the sub-space (in 2D) from the 1D result (appcoef, detcoef). But is there a convenient way to put the processed 2D sub-space back into the 1D composite space? Or I must count the indices myself?

Thank you