[WM]: Ask about quality metrics and perceptual system

["Ngan Le" <lthnganvn@gmail.com>]

hi all,
I am a new comer in this field. Hope to receive your help
I have some problems while reading paper:
1. What are the
quality metrics to identify the quality of watermarking method (audio, video, image..).
 2. I need some papers for perceptual
system (HVS and HAS) including its model . Right now, I have some ones but they not clear.

Thanks.
Have a good
day