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I would like to know how the MSU - Video Quality measurement tool:

here

calculates the blur metric.

What could be the mathematical computation to calculate blur?

I want to do something similar in my Image pipeline.

EDIT: If I have a blurry image, I upsize it / downsize it, and then compute the blur again for this resampled image, would it be same/more/less?

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    This is related to http://photo.stackexchange.com/questions/9388/blur-detection2011-03-04
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    To the second part: it really depends on your resampling algorithm.2011-03-04
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    I think this really belongs on the math.stackexchange.com or stackoverflow.com. While it may be related to another question here, that question in its own right is fairly off-topic. You are asking technical and mathematical questions that are far more likely to get a useful, viable answer at either of the above mentioned sites. I'm going to close this, and if you wish, I can migrate it to one of those sites for you. I would recommend the Math-SE site myself.2011-03-04

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