Bandwidth reduction for stereoscopic video signals

Wa James Tam; Lew B. Stelmach; Daniel V. Meegan; Andre Vincent

doi:10.1117/12.384476

3 May 2000 Bandwidth reduction for stereoscopic video signals

Wa James Tam, Lew B. Stelmach, Daniel V. Meegan, Andre Vincent

Proceedings Volume 3957, Stereoscopic Displays and Virtual Reality Systems VII; (2000) https://doi.org/10.1117/12.384476
Event: Electronic Imaging, 2000, San Jose, CA, United States

Abstract

The bandwidth required to transmit stereoscopic video signals is nominally twice that required for standard, monoscopic images. An effective method of reducing the required bandwidth is to code the two video streams asymmetrically. We assessed the impact of this bandwidth- reduction technique on image quality and overall sensation of depth. Images from the right-eye stream were spatially filtered on image quality and overall sensation of depth. Images from the right-eye stream were stream were spatially filtered to half and quarter resolution. Subsequently, the images were processed using an MPEG-2 codec at bit-rates of 6, 2, and 1 Mbit/s. Subjects assessed image quality and depth using a double-stimulus, continuous-quality scale method. It was found that perceived depth was relatively robust to spatial filtering and bit-rate reduction. Image quality was affected more by bit-rate reduction than by spatial filtering and, at the lower bit rates, ratings were much higher for stereoscopic than for non-stereoscopic sequences. The results indicate that asymmetrical coding of stereoscopic sequences can be an effective means of reducing bandwidth for storage and transmission.

Citation Download Citation

Wa James Tam, Lew B. Stelmach, Daniel V. Meegan, and Andre Vincent "Bandwidth reduction for stereoscopic video signals", Proc. SPIE 3957, Stereoscopic Displays and Virtual Reality Systems VII, (3 May 2000); https://doi.org/10.1117/12.384476

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