| 视觉注意的数据包优先级排序策略研究 |
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| 引用本文： | 魏泽锋,柳伟,梁永生.视觉注意的数据包优先级排序策略研究[J].深圳信息职业技术学院学报,2013(3):7-12. |
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| 作者姓名： | 魏泽锋 柳伟 梁永生 |
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| 作者单位： | [1]深圳大学信息工程学院,广东深圳518060 [2]深圳信息职业技术学院可视媒体处理与传输深圳市重点实验室,广东深圳518172 |
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| 基金项目： | 国家自然科学基金项目（61172165） |
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| 摘 要： | 为了提高视频流传输效率，本文提出一种基于视觉注意的数据包优先级排序策略。本文排序策略主要包括三个过程：首先，根据率失真理论计算数据包客观重要性；其次，通过分析视频镜头中视觉转移特性确定视频帧的时空显著图，采用灵活宏块排序技术将显著区域与背景区域分离，并根据数据包所包含区域的时空显著度确定数据包主观重要性；最后综合数据包主客观重要性得出数据包的最终优先级。实验结果表明，本文方法能够有效提高视频流的主观重建图像质量。
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| 关 键 词： | 视觉注意 优先级排序 显著图 码流提取 率失真理论 |
A priority sorting approach of scalable video coding streaming based on visual attention |
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| WEI Zefengl,LIU Wei,LIANG Yongsheng.A priority sorting approach of scalable video coding streaming based on visual attention[J].Journal of Shenzhen Institute of Information Technology,2013(3):7-12. |
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| Authors: | WEI Zefengl LIU Wei LIANG Yongsheng |
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| Institution: | 2 ( 1.College of Information Engineering, Shenzhen University, Shenzhen Guangdong 518060, P.R.China; 2. Shenzhen Key Laboratory of Visual Media Processing and Transmission, Shenzhen Institute of Information Technology, Shenzhen Guangdong 518172, P.R.China) |
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| Abstract: | In order to improve the video transmission efficiency, a priority sorting approach based on Visual Attention is proposed. The proposed approach calculate the packet objective importance based on the rate- distortion theory, calculate the packet subjective importance based on the visual attention theory. The FMO（Flexible Macrobloek Ordering） technology can help to separate importance area data and un-importance area data. At the end, the proposed approach determine the packet priority take into account the objective importance and subjective importance. The simulation result show that the proposed approach can effectively improve the subjective reconstructed quality of video streaming. |
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| Keywords: | visual attention priority sorting saliency map bit stream extraction rate distortion theory |
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