Life after Video Coding Standards: Rate Shaping and Error Concealment
نویسندگان
چکیده
Is there life after video coding standards? One might think that research has no room to advance with the video coding standards already defined. On the contrary, exciting research opportunities arise after the standards are specified. In this paper, we introduce two standard-related research areas: rate shaping and error concealment, as examples of interesting research that finds its context in standards. Experiment results are also shown.
منابع مشابه
Adaptive Spectral Separation Two Layer Coding with Error Concealment for Cell Loss Resilience
This paper addresses the issue of cell loss and its consequent effect on video quality in a packet video system, and examines possible compensative measures. In the system's enconder, adaptive spectral separation is used to develop a two-layer coding scheme comprising a high priority layer to carry essential video data and a low priority layer with data to enhance the video image. A two-step er...
متن کاملError concealment techniques for digital TV
Compressed video bitstreams are intended for real-time transmission over communication networks. Most of the video coding standards employ the temporal and spatial prediction structure to reduce the transmitted video data. Therefore, the coded video bitstreams are highly sensitive to information loss and channel errors. Even a single bit error can lead to disastrous quality degradation in both ...
متن کاملFeedback-Based Error Control for Mobile Video Transmission
We review feedback-based low bit-rate video coding techniques for robust transmission in mobile multimedia networks. For error control on the source coding level, each decoder has to make provisions for error detection, resynchronization, and error concealment, and we review techniques suitable for that purpose. Further, techniques are discussed for intelligent processing of acknowledgment info...
متن کاملVideo Error Concealment Based on Data Hiding for the Emerging Video Technologies
The new high efficiency video coding standard (HEVC) includes structures and tools that were not available in previous standards. The macrobock concept was replaced by a quad-tree structure that includes: coding units, prediction units and transform units; also, new parallelization tools are now available. Video transmissions over error prone environments have the need of reliable and efficient...
متن کاملECC Video - An Active Approach for Error Resilience
Video coding standards have incorporated various error resilience and error concealment tools, yet data losses during video transmission in mobile systems still pose big challenges. Here an approach for error resilience in the application layer is proposed, employing SEC (second error control) with ECC (error correction coding) and some simulation results are presented.
متن کامل