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Proceedings Paper

Perceptual evaluation of JPEG-coded stereoscopic images
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Paper Abstract

JPEG compression of the left and right components of a stereo image pair is a way to save valuable bandwidth when transmitting stereoscopic images. This paper presents results on the effects of camera-base distance and JPEG-coding on overall image quality, perceived depth, perceived sharpness and perceived eye-strain. In the experiment, two stereoscopic still scenes were used, varying in depth (three different camera-base distances: 0, 8 and 12 cm) and compression ratio (4 levels: original, 1:30, 1:40 and 1:60). All levels of compression were applied to both the left and right stereo image, resulting in a 4x4 matrix of all possible symmetric and asymmetric coding combinations. We applied the single stimulus method for subjective testing according to the ITU 500-10 recommendations. The observers were asked to assess image quality, sharpness, depth and eye-strain. Results showed that JPEG coding had a negative effect on image quality, sharpness and eye-strain but had no effect on perceived depth. An increase in camera-base distance increased perceived depth and reported eye-strain but had no effect on perceived sharpness. Furthermore, both sharpness and eye-strain correlated highly with perceived image quality.

Paper Details

Date Published: 30 May 2003
PDF: 12 pages
Proc. SPIE 5006, Stereoscopic Displays and Virtual Reality Systems X, (30 May 2003); doi: 10.1117/12.474122
Show Author Affiliations
Pieter Seuntiens, Eindhoven Univ. of Technology (Netherlands)
Lydia Meesters, Eindhoven Univ. of Technology (Netherlands)
Wijnand A. IJsselsteijn, Eindhoven Univ. of Technology (Netherlands)

Published in SPIE Proceedings Vol. 5006:
Stereoscopic Displays and Virtual Reality Systems X
Andrew J. Woods; Mark T. Bolas; John O. Merritt; Stephen A. Benton, Editor(s)

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