李祖团,邵枫,蒋刚毅,郁梅,李福翠.基于最大可容忍深度失真模型的低复杂度深度视频编码[J].光电子激光,2015,26(6):1162~1169 |
基于最大可容忍深度失真模型的低复杂度深度视频编码 |
Low complexity depth video coding based on maximum tolerable depth distortion mo del |
投稿时间:2015-01-08 |
DOI: |
中文关键词: 3D视频 深度视频编码 率失真(RD)代价 最大可容忍深度失真(M TDD) |
英文关键词:3D video depth video coding rate-distortion (RD)cos t maximum tolerable depth distortion (MTDD) |
基金项目:国家自然科学基金(61271021)资助项目 (宁波大学 信息科学与工程学院,浙江 宁波 315211) |
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中文摘要: |
在保证虚拟视点绘制质量的前提下,如何降低深 度视频的编码复杂度是一个亟需解决的问题。本文提出了一 种基于最大可容忍深度失真(MTDD,maximum tolerable d epth distortion)模型的低复杂度深度编码算法,将MTDD模型引 入 到率失真(RD)代价函数,通过对编码单元(CU)进行失真度量判决 ,如果对当前CU进 行编码不会导致可察觉的绘制失真,则失真度量只考虑深度编码失真,否则失真度量同时考 虑深度编码失真和视点 合成失真(VSD),从而降低编码复杂度。实验结果表明,所 提出的算法在不 降低虚拟视点绘制质量和不增加编码码率的情况下,能显著降低深度视频的编码复杂度。 |
英文摘要: |
How to reduce the computational complexity for depth video coding whil e maintaining high rendering quality of synthesized virtual views is still an urgent problem to be solved.In this paper ,a low complexity depth video coding method is proposed based on maximum tolerable depth distortion (MTDD) model.Specifically,the MTDD model is incorporated into the rate-distortion (RD) function.To determine dis tortion measurement for each coding unit (CU),if the depth coding distortion will not lead to noticeable view synthesis distortion,only depth cod ing distortion term is considered in distortion measurement,otherwise,both depth coding distortion and view synthesis distorti on are considered.Experimental results show that the proposed algorithm can significantly reduce the coding complex ity wh ile without obvious rendering quality degradation or coding bitrate increasemen t. |
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