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Topic: Can someone please explain why these different algorithms are giving slightly different results for the variance of an image?
Replies: 1   Last Post: Apr 28, 2014 10:07 PM

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Eric Diaz

Posts: 134
Registered: 11/6/09
Re: Can someone please explain why these different algorithms are giving slightly different results for the variance of an image?
Posted: Apr 28, 2014 10:07 PM
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I forgot to change the end index for the "for loops" to nzs in the above posted algorithms.

Also, I referenced several websites and definitions of variance, including

%References:

http://en.wikipedia.org/wiki/Variance#Formulae_for_the_variance
http://www.mathworks.com/help/images/ref/stdfilt.html
http://mathworld.wolfram.com/Variance.html



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