清空筛选条件
清空筛选条件

if i normalize signal power of noisy image

2 次查看（过去 30 天）
vipul utsav
vipul utsav 2013-1-9
I is original image and 'n' is noise image and it add in I to generate noisy image('mix'),means
mix=I+n;
if i normalize signal power of noisy image as mean2(I) means
P(signal)=mean(I)
if i normalize noise power of noisy image as std2(n) means
P(noise)=std2(n)
then i define normalized snr as
snr=P(signal)/P(noise)
is this problematic or right?
I have studied snr=mean(I./n),but this is another way

请先登录，再回答此问题。

回答（1 个）

Image Analyst
Image Analyst 2013-2-2
That's not correct. You're better off doing the pixel by pixel ratio and then taking the mean, like your latter method. Mathematically they are not the same.

类别

在 Help Center 和 File Exchange 中查找有关 Convert Image Type 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