22 June 2001 Stereoscopic video: asymmetrical coding with temporal interleaving
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Abstract
Asymmetrical coding has been shown to be a viable method for reducing the bandwidth required for stereoscopic video storage and transmission. In the basic version of asymmetric coding, high quality images are streamed to one eye, and lower quality images are streamed to the other eye. To remove this imbalance in image quality between the two eyes, we propose a modified version of asymmetrical coding where high-quality images are interleaved with reduced-quality images within each stream. The change between high-quality and reduced-quality images occurs in counter-phase for the two image streams, such that the levels of image quality are cross-switched between streams. Experimental evidence is provided to show that a cross-switch is best positioned at scene cuts where it is masked, otherwise it is visible as a 'jerky motion' in the stereoscopic picture. We conclude that a modified version of asymmetric coding with cross-switches occurring at scene-cuts is a useful method for balancing the image quality between eyes without introducing artifacts, while maintaining the feature of bandwidth reduction for stereoscopic video storage and transmission.
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Wa James Tam, Wa James Tam, Lew B. Stelmach, Lew B. Stelmach, Suganthan Subramaniam, Suganthan Subramaniam, } "Stereoscopic video: asymmetrical coding with temporal interleaving", Proc. SPIE 4297, Stereoscopic Displays and Virtual Reality Systems VIII, (22 June 2001); doi: 10.1117/12.430828; https://doi.org/10.1117/12.430828
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