Robust multiple description distributed video coding using optimized zero-padding

来源 :Science in China(Series F:Information Sciences) | 被引量 : 0次 | 上传用户:sqs1989
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Distributed video coding (DVC) arouses high interests due to its property of low-complexity encoding. This paper proposes a robust multiple description DVC (MDDVC) under the constraint of low-complexity encoding. In MDDVC,zeros are padded to each frame and the resulting big-size video is divided into multiple descriptions. Then,each description is compressed by a hybrid DVC (HDVC) codec and trans-mitted over different channel. When one channel does not work,the lost HDVC description is estimated by the received from other channel,which guarantees the robustness of the system;MDDVC moves the complex motion estimation totally to the decoder so it features low-complexity encoding. In the pre-processing,an optimized zero-padding is also proposed to improve the performance. Experimen-tal results exhibit that the proposed MDDVC scheme achieves better rate-distortion performance and robustness than the referenced especially when packet-loss rate is high. This paper proposes a robust multiple description DVC (MDDVC) under the constraint of low-complexity encoding. In MDDVC, zeros are padded to each frame and the Each of the description is compressed by a hybrid DVC (HDVC) codec and trans-mitted over different channel. When one channel does not work, the lost HDVC description is estimated by the received from other channel, which guarantees the robustness of the system; MDDVC moves the complex motion estimation totally to the decoder so it features low-complexity encoding. In the pre-processing, an optimized zero-padding is also proposed to improve the performance. Experimen- tal results exhibit that the proposed MDDVC scheme achieves better rate-distortion performance and robustness than the referenced especially when packet-loss rate is high.
其他文献
事业单位汇总会计报表的编制●高荣华事业单位会计编制汇总会计报表,即合并会计报表,要将上下级之间的对应科目数字进行冲销。具体编制报表的做法,可分六步进行。第一步,审核所属
在政策房的强力推动下,2008年青岛楼市成交从郊区向市区回归的趋势更加明显。从目前掌握的资料来看,我们可以用一个简单的思路来概括青岛市区楼市(包括市内四区和崂山区中韩
词义汉译是英汉翻译中首先要遇到的问题。把英语单词转换成汉语並不是简单地将词典中的释义以等换方式能实观的,因为在这种转换过程中,译文词义的确定要受到种种因素的限制,
服务质量(QoS,Quality of Service)是决定用户对服务满意程度的服务性能的总体效果.随着移动通信业的快速发展,人们对移动通信服务的质量也提出了越来越高的要求。本文将对第
国务院各部委,各省、自治区、直辖市、计划单列市财政厅(局),新疆生产建设兵团:为适应社会主义市场经济发展,规范企业非货币性交易的会计核算及相关信息的披露,提高会计信息质
背景:历时近两年时间修订的《中国共产党巡视工作条例》8月13日对外公布全文,新修订的条例将中央巡视工作领导小组对省区市巡视工作原“指导”关系改变为“领导”关系,还扩大
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
这张由芝加哥大学提供的照片拍摄于1991 年,罗纳德·科斯获得诺贝尔经济学奖时。著名经济学家罗纳德·科斯在产权理论、法律经济学以及新制度经济学等方面做出了巨大贡献,其理论对中国的经济改革影响深远。图/CFP  科斯(Ronald Harry Coase, 1910-2013)谢世了。我们不会为一個在地球上活了102年多的人的辞别感到悲伤。我自己跟进着科斯的病况:几星期前跟他通了电话,知道他的思想清
加强预算管理是总会计新制度的核心徐建新的财政总预算会计制度从年初执行到现在,已经半年多了。从大体情况看,新旧交替比较平稳,没有发生什么混乱现象。在执行中发现的一些问题
目的 评价世界银行贷款结核病控制项目成效。方法 根据全县结核病报表分析结核病人登记及治疗效果。结果 昌江县世行贷款结核病控制项目从1994年开始启动,截止至2000年12月31