how to get SNR for 2 images

11 次查看（过去 30 天）
Rawan hamdi
Rawan hamdi 2013-4-11
hi,
i have 2 images and i would like to get SNR between these 2 images. i have an original clean image which is X0, i added some noise to it and the noisy image is Xn

请先登录，再回答此问题。

回答（1 个）

Kye Taylor
Kye Taylor 2013-4-11
编辑：Kye Taylor 2013-4-11
You'll get different answers, depending on who you're talking to.
I would suggest using
snr = 20*log(norm(X0,'fro')/norm(X0-Xn,'fro'))
  3 个评论
显示 1更早的评论
Kye Taylor
Kye Taylor 2013-4-11
Check it....
Define a function handle to compute the SNR of images, relative to the clean image X0:
g = @(X)20*log(norm(X0,'fro')/norm(X0-X,'fro'))
Then, you can compute the SNRs of your two images like
snrOfXn = g(Xn);
snrOfXX = g(XX);
How rad is that?
The higher the SNR, the better the denoising process. In other words, if XX is denoised version of Xn, you should see snrOfXn < snrOfXX
Rawan hamdi
Rawan hamdi 2013-4-11
i'm sorry im new to matlab but how can i define this function?

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Image Category Classification 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by