Gaze-contingent video compression with targeted gaze containment performance

A delay compensation algorithm is presented for a gaze-contingent video compression system (GCS) with a robust targeted gaze containment (TGC) performance. The TGC parameter allows varying compression levels of a gaze-contingent video stream by controlling its perceptual quality. The delay compensat...

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Bibliographic Details
Published inJournal of electronic imaging Vol. 18; no. 3; pp. 033001 - 0330010
Main Author Komogortsev, Oleg V
Format Journal Article
LanguageEnglish
Published 01.07.2009
Subjects
Compensation
Compressing
Containment
Delay
Electronics
Mathematical models
Parametrization
Video compression
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Summary:A delay compensation algorithm is presented for a gaze-contingent video compression system (GCS) with a robust targeted gaze containment (TGC) performance. The TGC parameter allows varying compression levels of a gaze-contingent video stream by controlling its perceptual quality. The delay compensation model is based on the Kalman filter framework that models the human visual system with eye position and velocity data. The model predicts future eye position and constructs a high-quality coded region of interest (ROI) designed to contain a targeted number of gaze samples while reducing perceptual quality in the periphery of that region. Several model parameterization schemes were tested with 21 subjects using a delay range of and a TGC of 60 to 90 . The results indicate that the model was able to achieve TGC levels with compression of 1.4 to 2.3 times for and compression of 1.8 to 2.5 for . The lowest compression values were recorded for high delays, while the highest compression values were reported during small delays.
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ISSN:1017-9909
1560-229X
DOI:10.1117/1.3158609