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I am getting error while performing dct and dwt for images,please correct it or give some suggestions.Thanks in advance

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kaavya subramani
kaavya subramani 2015-9-12
评论： kaavya subramani 2015-9-21
1)
for ii=1:length(yy1)%yy1 contains 2 cells of size 192x192x3
dwt{1,ii}=dwt(yy1{ii},'db4');% i need to store approximation coefficient alone.
end
2)
for ii=1:length(yy1)
dct{1,ii}=dct2(yy1{ii});% error is 'matrix dimension must agree'
end

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Walter Roberson
Walter Roberson 2015-9-12
dwt is for vectors. dct2 is for 2 dimensional arrays. You are trying to pass in 3 dimensional arrays.
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Walter Roberson
Walter Roberson 2015-9-19
It looks to me as if you might have a corrupted installation or else a corrupted path. Try
resetdefaultpath
and then try again. If that fails you need to reinstall the wavelet toolbox.

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