calculation of PSNR cetween two images

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tina jain
tina jain 2015-4-29
回答： Guillaume 2015-4-29
If I am calculating PSNR of a image then should I use
PSNR=psnrtest(Original_image,reconstructed_image)
OR
Original_doubled_image=double(Original_image);
PSNR=psnrtest(Original_doubled_image,reconstructed_image)

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Guillaume
Guillaume 2015-4-29
As far as I know there's no psnrtest function in matlab or its toolboxes. The image processing toolbox has a psnr function however.
For psnr, both images must be of the same type and class. So if the reconstructed_image is double, then the original image should be double as well.Make sure that the intensity range of both images matches as well. double images usually have a range between 0 and 1.

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