How to find image quality using cnr?

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Selva Karna
Selva Karna le 31 Juil 2017
Réponse apportée : r r le 4 Juil 2020
How to find image quality using cnr?

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Walter Roberson
Walter Roberson le 31 Juil 2017
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Walter Roberson
Walter Roberson le 31 Juil 2017
(Some definitions for calculating CNR are given at http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0077089 )
Walter Roberson
Walter Roberson le 31 Juil 2017
SNR and CNR are always defined as a measure of the difference between a noisy signal and a reference less-noisy signal. If you only have one image, then the only way you can calculate SNR or CNR is if you have distinct regions where part is noisy and part is less so, and you measure within the respective ROIs and calculate based on those.

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r r
r r le 4 Juil 2020
I have an image that contains a tumor and I want to calculate the rate of contrast for this tumor within the image , please help me

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