Title :
Current issues and new techniques in visual quality assessment
Author_Institution :
Inst. for Perception Res., Eindhoven, Netherlands
Abstract :
This paper deals with two current issues in visual quality assessment, namely, contextual effects in quality judgments and the evaluation of time-varying image quality. A scaling experiment is described showing that contextual effects due to stimulus spacing are negligible when a method based on difference judgments is used. It is also shown that subjects can record their impressions of time-varying image quality by means of moving a slider along a graphical scale. The research on contextual effects as well as on the continuous assessment of time-varying image quality illustrate the important role psychological factors play in image quality evaluation
Keywords :
image processing; psychology; visual perception; contextual effects; continuous assessment; difference judgments; graphical scale; image quality evaluation; psychological factors; quality judgments; scaling experiment; stimulus spacing; time-varying image quality; visual quality assessment; Algorithm design and analysis; Digital systems; Image processing; Image quality; PSNR; Psychology; Quality assessment; Radio communication; Telecommunications; Time varying systems;
Conference_Titel :
Image Processing, 1996. Proceedings., International Conference on
Conference_Location :
Lausanne
Print_ISBN :
0-7803-3259-8
DOI :
10.1109/ICIP.1996.559637
