How can I do the following Euclidean Distance function in MATLAB? (Non-Local Means Denoising)

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Jordan Wong
Jordan Wong el 19 de Nov. de 2015
Comentada: Royi Avital el 28 de Feb. de 2016
I would like to denoise an MRI image using Non-Local means method but I would like to ask how can I convert the numerator of the lamda i-j, which is the Gaussian Weighted Euclidean Distance, into code in MATLAB? I'm not too sure how the function works either.
N(Y)i and N(Y)j are the vector intensity of pixel i and j respectively. a is the standard deviation of the Gaussian Function.
Thank you very much!

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