Approximate Entropy Calculation for an Image
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Hi,
How can we compute the APPROXIMATE ENTROPY of an IMAGE.
Please help,
Thanks
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Accepted Answer
Thorsten
on 29 Jun 2015
function E = entropy(I)
% Assume I in the range 0..1
p = hist(I(:), linspace(0,1,256)); % create histogram
p(p==0) = []; % remove zero entries that would cause log2 to return NaN
p = p/numel(I); % normalize histogram to unity
E = -sum(p.*log2(p)); % entropy definition
3 Comments
Thorsten
on 29 Jun 2015
Marcus Tan
on 25 Jul 2021
Can someone guide me also how to calculate the approximate entropy of an Spectrogram image transformed from EEG signal? I have seen number of file exchange but none of them work.
More Answers (1)
Maria da Luz
on 29 Apr 2024
Como recortar a região de interrese dessa imagem que neste caso é a mandibula.só a parte branca
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