how to find similarity between two imges or two audio signals using matlab?

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shrikant kumbhar
shrikant kumbhar on 2 Sep 2013
I want to find similarities between two images(to give a secure place for watermark) or two speech signals(for key word spotting)?
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Walter Roberson
Walter Roberson on 2 Sep 2013
Let me see... the similarity between this platypus and this chameleon is... right there, the slightly darker spot on each marks their cloaca !

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Answers (1)

Youssef Khmou
Youssef Khmou on 2 Sep 2013
there are many statistical tools that can be used for this purpose , ( rmse, Correlation, cross spectral density, ...etc), try the pairwise distance for example :
>>doc pdist

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