Approximate Entropy Calculation for an Image
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shishir
am 29 Jun. 2015
Beantwortet: Maria da Luz
am 29 Apr. 2024
Hi,
How can we compute the APPROXIMATE ENTROPY of an IMAGE.
Please help,
Thanks
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Thorsten
am 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 Kommentare
Thorsten
am 29 Jun. 2015
Marcus Tan
am 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.
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Maria da Luz
am 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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