entropy of a gray scale image

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hellO everyone..i am no doing a project in image processing...
i have done it to some extent..
some body help me in finding code for generating the value of entropy of an gray scale image..
please..

Posted 12-Aug-13 5:47am

me.sanobabu1

Updated 20-Nov-13 17:23pm

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Sergey Alexandrovich Kryukov 12-Aug-13 11:55am

To what extent? What's the particular problem?
—SA

me.sanobabu1 13-Aug-13 3:40am

i want to calculate entropy of an image..

MCY 15-Aug-13 9:17am

that is not a "problem", that is a "project". What fails to work in your code?

me.sanobabu1 15-Aug-13 23:32pm

i still dont have code.. can u suggest me.

Dave Kreskowiak 20-Nov-13 17:24pm

So you want someone to hand you their code? Sorry, but that's not how the world works.

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amir_pro · Answer 1 · 2013-11-20T10:40:00

Solution 1

you must first calculate Nr that describe count of pixel in each gray level
then you must use the Entropy farmmula

Entropy(img)=sum(Nr * log2(Nr))

Posted 20-Nov-13 10:40am

amir_pro