how to calculate snr of an image

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ayesha
ayesha 2017-7-16
回答： Rik 2017-7-16
I am working on images of CT scans. I would like to find out the signal to noise ratio of the image and compare it with other images. How to calculate the snr of the images??

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Rik
Rik 2017-7-16
The first hit on Google for me was the Wikipedia page. From this section, it is trivial to write code accordingly:
SNR=mean(CT(:))/std(CT(:));
Just a hint: next time have a read here and here. It will greatly improve your chances of getting an answer and also help you to find the answers yourself.

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