An unequal error protection scheme for object based video communications

Abstract

This paper presents a novel adaptation technique for optimisation of the source and error protection rates in response to varying channel conditions in wireless networks. The optimisation methodology is based on accurate modelling of video frame distortion at the encoder. An optimal value for the quantisation parameter is calculated for video frames based on these estimates, and then video packets are mapped to one of a number of different priority radio bearers, according to their expected distortion. The algorithm performance is demonstrated for object based MPEG-4 video transmission over a UMTS/FDD system. The results demonstrate that a significant performance gain is achieved with the proposed scheme, compared with the equal error protection scheme for video transmission over a fixed bandwidth channel.

Media motion-based resource distribution for mobile video networking

“…Adaptive Power Allocation and Call Admission Control in Multirate Service WiMAX Access Networks, which allocates more power resources to the users with higher subscription tariff has been discussed in [8]. An Unequal Error Protection Scheme for Object-based Video Communications, where different quantization parameters are allocated for coding of each object is discussed in [9]. However, the discussed schemes in the literature do not consider media motion characteristic in video networking process.…”

Smart Broadcast Technique for Improved Video Applications over Constrained Networks

“…RELATED WORK Various schemes for video transmission have been discussed in the literature including Unequal Power Allocation for Scalable Video Transmission, where base layers of scalable video are allocated more error protection level compared to the enhancement layer [10]. An Unequal Error Protection Scheme for Object-based Video Communications, where different quantization parameters are allocated for coding of each object in the video sequence [11]. Selforganized Content and Routing in Intelligent Broadcast Environments (SCRIBE) is presented in [12] with the objective of minimizing the redundancy associated with convectional flooding broadcast scheme.…”