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By combining the advantages of distributed video coding (DVC) and compressive sensing (CS), distributed compressive video sensing (DCVS) poses itself as a very promising low-complexity video coding framework for distributed applications. In order to improve the rate-distortion performance of DCVS, much research efforts have been focused on exploring the best ways to utilize the spatial/temporal redundancy...
This paper proposes a joint source-channel coding (JSCC) scheme for unequal protection of SVC video coding over packet loss channels. The SVC sub-streams with different importance are unequally protected using Low Density Parity Check (LDPC) codes with five different coding rates respectively. The proposed JSCC scheme for SVC can optimize the rate allocation between source coding and channel coding...
A new cross-layer architecture is employed in this paper for the transmission of scalable H.264 video over IEEE 802.11e networks. The architecture enables flexible using of access categories (ACs) for video transmitting based on information of both application and MAC layer. A novel significance-based early detection (SBED) algorithm is proposed, which maximizes the transmission of significant SVC...
In order to obtain better video quality, media files are required to use variable-bit-rate (VBR) encoding. However, it produces traffic burst and unbalanced resource utilizations to translate VBR-encoded video. In this paper, we propose a novel bandwidth smoothing algorithm, buffer sharing and bandwidth smoothing of VBR streams (BSBS-VBR), which combines with prefetching and interval caching, allows...
In this paper, we propose an efficient intra refreshment algorithm, which can achieve both the global optimization in determining the intra refreshing ratio and the local accuracy in selecting the proper macroblocks to be intra coded before the current frame is actually encoded. Furthermore, incorporated with our proposed intra refreshment algorithm, an effective UEP scheme based on a dynamic FMO...
In this paper, redundant slices feature of the H.264/AVC codec is evaluated. In order to trade off compression efficiency and error robustness of a H.264/AVC codec with redundant slice capability, we propose a novel perceptual sensitivity based redundant slices coding scheme. The perceptually sensitive regions are determined by using a simple yet effective perceptual sensitivity analysis technique,...
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