How to calculate percentage change in Noise

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Tallha Akram on 11 Dec 2012

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Hi,

I have added salt & pepper noise (10%) to a certain image and then apply the filter.

The Filter has removed enough noise and output image has shown reduction in noise level.

Now i want to calculate the percentage change in Noise Level. How to find it?

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Walter Roberson on 11 Dec 2012

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Calculate the PSNR; see http://en.wikipedia.org/wiki/Peak_signal-to-noise_ratio

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