http://white.stanford.edu/html/teo/papers/icip94-images.html
Exploring the relationship between our perceptions of image clarity, with the empirical classification of image distortion is the subject of this Web site. Originally presented as a paper at the First IEEE International Conference on Image Processing we are presented with a series of comparisons between images that have different degrees of distortion. The paradox being studied is that there are conditions where the image with the greater distortion actually appears to be clearer. The paper presents some of the technical details as well as a link to the paper's abstract.