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Measure image quality NC

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muath shaikh
muath shaikh 2015-1-8
评论： Image Analyst 2021-1-12
Hello, I have two images (i and iw) and i want to measure the similarity and dissimailarity between them there is function it is called Normalized Cross Correlation (NCC) Could any body support me in the matlab code for it

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Image Analyst
Image Analyst 2015-1-8
Normalized cross correlation is performed by normxcorr2(). I'm attaching a demo. As far as I know this is not commonly used to asses image quality. PSNR and SSIM are more commonly used. I'm attaching a PSNR demo. There are functions for them in recent versions of the Image Processing Toolbox.
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Image Analyst
Image Analyst 2021-1-12
You'll notice that my naromxcorr2 demo works with a colored image.
There is now a built in psnr() function. Use that. Use imsplit() if you need to separate the image into individual color channels.

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