How to calculate large noise signal from an image
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I want to calculate weighting factor for image processing by formula given below:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/653865/image.png)
Where Lm,n is larger signal and Li,j is larger noise signal. My question ius that how I can caclulate larger signal (Li,j) for noise in matlab.
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Image Analyst
il 15 Giu 2021
What are Lmn and Lij larger than?
Are you supposed to get the Lij noise image from the Lmn "sample" image? Do you know anything about the signal or the noise? What is sigma(i, j)? Is it just simply std(double(Lij(:)))? And what is the value of beta?
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