摘要
视差估计与补偿是立体视频图像压缩编码中的关键技术.本文分析了立体摄像系统视差分布的约束条件(外极线约束、方向性约束等)和视差矢量的相关性(帧内视差矢量的空域相关性和帧间视差矢量的时域相关性),并结合H.264标准中的多种块选择模式之间的相关性,提出了基于H.264的立体视频编码的视差估计快速算法.实验结果表明,提出的快速算法能有效地降低视差估计的计算复杂度.
Fast and efficient disparity estimation and compensation are the key technique in stereo video processing. The constraints on disparity distribution and correlations among disparity vectors were first analyzed, including the constraints of the epipolar lines and directions, the temporal correlation among inter-frame disparity vectors and spatial correlation among intra-frame disparity vectors. The correlation between block selection modes in H. 264 was utilized to optimize the strategy of disparity estimation. Experimental results showed that, as compared with the full search algorithm, the fast algorithm proposed in the paper is more effective regarding computing complexity while the quality of reconstructed images is close to the one by means of the full search method.
出处
《浙江大学学报（理学版）》
CAS
CSCD
北大核心
2006年第4期412-416,共5页
Journal of Zhejiang University（Science Edition）
基金
国家自然科学基金资助项目(61472100)
浙江省科学基金青年人才基金资助项目(RC01057)
浙江省科技攻关资助项目(2004C31105)
宁波市博士基金资助项目(2004A610001
2004A630002
2003A61001)
关键词
视差估计
立体视频编码
约束条件
disparity estimation
stereo video coding
constraints
作者简介
徐彬（1981-），男，硕士生，主要从事立体视频编码方面的研究．
