【摘要】 为了使H.264可分级视频编码(SVC)生成的数据流分割为多个子数据流,便于在多输入多输出(MIMO)无线网络的不同子信道上传输以提高视频传输速率,提出了一个SVC数据流抽取和重组算法。在发送端,该算法利用SVC数据流的分层结构,将其中的基本层和增强层抽取为多个子数据流,并保持基本层子数据流能够独立解码。在接收端,该算法将接收到的子数据流重组成可解码的SVC数据流。实验证明该算法能充分利用MIMO系统提供的高带宽,并具有较低的冗余度和较好的灵活性。更多还原

【Abstract】 In order to divide the H.264 Scalable Video Coding (SVC) bitstream into sub-bitstreams that are transmitted in different Multiple-Input Mutiple-Output (MIMO) sub-channel to improve the video data transmission rates over wireless system,a bitstream extracting and re-assembling scheme was proposed to extract the basic and enhancement layers of SVC bitstream into sub-bitstreams at the sender side while keeping the sub-bitstream of basic layer to be decoded independently. At the receiver side the received sub-bitstreams were reconstructed by a bitstream re-assembling scheme into decodable SVC bitstream. Experimental results show that the proposed scheme can make full use of the high-bandwidth provided by MIMO systems with low redundancy and high flexibility.更多还原