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AVS is Chinese standard with independent intellectual property rights for the second-generation source coding. In this paper, we give an overview of AVS and stream structure. Then we analyze the influence of bit error in various group fields and classify those fields by effects on the quality of the video sequence. On this basis, we find out a method to describe the performance of error resilience...
Multiple Hypothesis Motion Compensated Prediction (MHMCP) has been extensively studied and is known to be a very effective method for enhancing the error resilience of motion compensated prediction with little impact on coding efficiency for compressing moving picture sequences. MHMCP with 2 hypotheses (2HMCP) may be used within the H.264/AVC standard by implementing it under the generalized B pictures...
A new error concealment technique based on the coding modes is proposed for H.264 video sequences. The motion-compensation modes (i.e., block-partitioning types) of surrounding macroblocks are employed to predict the mode of a lost macroblock. This adaptive selection mechanism is combined with a refined set of candidate motion vectors. Experimental results show that the proposed method, as compared...
Leaky prediction schemes have been proposed to reduce transmission error propagation by trading off with video coding efficiency. We propose using leaky prediction to improve the robustness of generalized source channel prediction scheme for H.264/AVC in error prone scenarios. We apply leaky prediction selectively at a macroblock level based on a simple mean square error metric in order to reduce...
In this paper we describe a database containing subjective assessment scores relative to 78 video streams encoded with H.264/AVC and corrupted by simulating the transmission over error-prone network. The data has been collected from 40 subjects at the premises of two academic institutions. Our goal is to provide a balanced and comprehensive database to enable reproducible research results in the field...
We investigate the problem of robust video transmission over packet loss networks. A resilient video coding framework is important to ensure quality video over these networks. We propose a combination of multiple description coding and an optimized packetization method to constitute the error resilient codec. Multiple description coding technique utilizes path-diversity (multiple paths between sender...
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