Hi Dima,
1. If u r working on Matlab, then u need to calculate the log10 of the PSNR that u get from the Matlab function PSNR, in order to have the value in db.
2. The PSNR depends on the amount of information in the image, not the size. SO, the more noise (or information) in the image, the smaller the value of PSNR gets.
3. Can u just remind me what is the CDMA, so that i'll see if i can help u.
Take care,
Suhad.
----- Original Message ----
From: Dima Hamdan <dimashamdane@yahoo.com>
To: watermarking@watermarkingworld.org
Sent: Sunday, March 11, 2007 5:06:07 PM
Subject: [WM]: psnr
hi watermarker,
I need to know:
1-what is the typical value of psnr?
2- is the value od psnr depends on the size of image?
3- how many bits can we embed in an image using CDMA in wavelet domain?
Regards
thank in advance
