[PSNR_RGB] - PSNR(peak signal to noise ratio) calculation for image.
[psnr calculations for g729] - psnr calculations for g729
[PSNR_Stegnography] - LOW PSNR STEGNOGRAPHIC TECHNIQUE 20-LOW PSNR STEGNOGRAPHIC TECHNIQUE 2011
[psnr-calculations-for-celp] - matlab code for PSNR calculation for speech coder
[PSNRzip] - Function that calculate the PSNR and WSNR of two imagines
