Considering the high packet losses and low, varying bandwidth of GPRS/EDGE network and limited computation power of handheld devices, we present and implement a novel SVC video-on-demand system for hand-held devices over GPRS/EDGE network. For the purpose of handling varying bitrate, we propose a priority based layer switching (PLS) adaptation scheme for SVC stream, which not only performs online 3-D adaptation more quickly by a simple parser, but also optimizes the video quality in a R-D sense under the bandwidth constraint. To resist packet losses, a motion-detection based adaptive error concealment (MDA) algorithm is proposed, which can achieve a PSNR gain of up to 3dB comparing to existing methods, while maintaining low complexity. Moreover, our proposed system was implemented and tested over existing GPRS/EDGE network deployed in China. The test results demonstrate that the proposed system and schemes have performance advantage in terms of quicker data rate adaptation, higher PSNR and lower overhead.
A Novel SVC VoD System with Rate Adaptation and Error Concealment over GPRS/EDGE Network
2008 Congress on Image and Signal Processing ; 1 ; 349-354
2008-05-01
429940 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Modified Edge-oriented Spatial Interpolation for Consecutive Blocks Error Concealment
British Library Conference Proceedings | 2005
|Error Concealment for Motion JPEG2000
British Library Conference Proceedings | 2005
|Error concealment for motion JPEG2000
IEEE | 2005
|Error concealment using multiresolution motion estimation [2597-38]
British Library Conference Proceedings | 1995
|