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Journal of Electronic Imaging

Deriving and evaluating eye-tracking controlled volumes of interest for variable-resolution video compression
Author(s): Marcus Nystrom; Kenneth Holmqvist
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Paper Abstract

Gaze coordinates are recorded from naive subjects watching a number of video clips. These are used to derive volumes of interest (VOIs) representing the mutual visual interest of the tested subjects. Video frames are then processed in variable resolution contingent on the VOI shapes to produce off-line foveated video. We report on bit rate savings between 30 and 54% due to off-line foveation proir to encoding with H.264. Subjective tests with a new set of subjects showed that off-line foveation in two of the three tested video clips had a positive effect on the experienced quality compared to unfoveated videos compressed with the same quality factor. We conclude that, in disagreement with previous works, it is advantageous to use off-line foveation to improve the performance of current state-of-art video compression technology.

Paper Details

Date Published: 1 January 2007
PDF: 8 pages
J. Electron. Imaging. 16(1) 013006 doi: 10.1117/1.2435199
Published in: Journal of Electronic Imaging Volume 16, Issue 1
Show Author Affiliations
Marcus Nystrom, Lunds Univ. (Sweden)
Kenneth Holmqvist, Lund Univ. (Sweden)


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