Perceived image quality of MPEG-2 stereoscopic sequences

Wa James Tam; Lew B. Stelmach

doi:10.1117/12.274525

3 June 1997 Perceived image quality of MPEG-2 stereoscopic sequences

Wa James Tam, Lew B. Stelmach

Proceedings Volume 3016, Human Vision and Electronic Imaging II; (1997) https://doi.org/10.1117/12.274525
Event: Electronic Imaging '97, 1997, San Jose, CA, United States

Abstract

Image quality of stereoscopic video sequences were assessed by non-expert viewers, using a subjective assessment method, as described in ITU-R Recommendation 500. Three 10-second stereo sequences, in the ITU-R 601 format, were assessed. Using a standard MPEG-2 codec, images of the left-eye views of each sequence were compressed independently of the right-eye views, at bit rates of 1, 2, 3, and 6 Mb/s. Twenty-six viewers rated the overall image quality for various combinations of the compressed left- and right-eye views. Viewers also rated non- stereo sequences, which consisted of images of the right-eye views for both eyes. Ratings of overall image quality were between 60 - 70 units, corresponding to a label of 'good,' except when the severity of artifacts presented to one eye was large, i.e., when the bit rate was below 3 Mb/s. When there was a mismatch in quality of inputs to the two eyes, ratings of overall perceived quality fell halfway between ratings of quality for the left-eye input and the right-eye input. Interestingly, ratings of image quality for stereo sequences were equal to non-stereo sequences, except at the lowest bit rate tested (1 Mb/s).

Citation Download Citation

Wa James Tam and Lew B. Stelmach "Perceived image quality of MPEG-2 stereoscopic sequences", Proc. SPIE 3016, Human Vision and Electronic Imaging II, (3 June 1997); https://doi.org/10.1117/12.274525

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