Ratings of Visual Quality in Digitized Imaging Systems

Abstract

This paper describes a study conducted on 40 human subjects to rate six different digitized visual images (3 colored and 3 black & white) on a qualitative scale. The results were compared analysis of variance and pairwise comparison tests. It was found that the subjects responded most favorably to the highest resolution colored image, hence validating the hypothesis that high definition digitized images are superior to the conventional ones. Moreover, it was also found that 5 out of 15 pairs of images were not significantly different from one another, indicating that the images with resolution very close to one another were not being differentiated by the subjects. The findings of this study are of vital significance because it reinforces the objective claims that the high definition images used in high definition television are superior to the low definition images in conventional television.