Experimental results on visibility threshold in human visual perception for application in image/video coding and quality assessment

In assessment of image quality, as well as in image coding, end users are human beings. They need some type of image for work or entertainment. So it is logical to pursuit the goal of achieving better image quality by investigating what is better to human eyes. This paper is a contribution in that direction. Just-noticeable distortion and some aspects of it are discussed and experimental results on the visibility threshold of low gray tones are presented.