上海大学通信学院电子信息系,上海,200072
网络出版:2003-10-25,
纸质出版:2003
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骆 艳, 张兆扬. 一种基于立体视邻接帧时空相关性的最小代价函数帧估计算法[J]. 电子学报, 2003,31(10):1513-1517.
LUO Yan, ZHANG Zhao-yang. A Smallest Cost Function Frame Estimation Algorithm Based on Spatial- Temporal Correlation in Neighboring Frames of Stereoscopic Sequences[J]. Acta Electronica Sinica, 2003, 31(10): 1513-1517.
为了在立体视频序列编码中获得高的压缩率
需要对立体视频序列中一个视的序列按传统方法进行独立编码;另一个视的序列中
只对其中一些参考帧(I帧或P帧)按视差补偿预测的方法进行编码
其余帧不进行编码和传输
而在解码端用立体视帧估计的方法得到重建.本文提出了一种基于立体视中邻接帧在图像、视差场和运动矢量场之间高度相关性的方法.对于因遮挡而缺乏估计的区域
则结合了图像强度的连续性和运动
视差矢量的分布特性
构造了代价方程并估计出该部分的运动矢量及强度值.实验证明
重建出来的帧图像在视觉和信噪比意义上均具有较好的效果.
In order to achieve high compression ratio in coding stereo video sequences
one sequence of stereoscopic sequences is independently coded by a conventional MPEG-type scheme
only a few reference frames in another sequence are coded.The rest of frames
however
are neither coded nor transmitted.They are reconstructed at the decoder using a stereoscopic frame estimation technique.This paper studies the highly spatial and temporal correlation between images
disparity fields and motion vector fields in the neighbor frames of stereoscopic sequences and proposes a frame estimation technique to explore these correlations.As to those un-estimated regions due to occlusion
this paper also constructs a cost function combined with the continuity of image intensity and the distribution characteristic of motion and disparity vector to estimate the motion vectors and intensities of them.The experiment results show that this frame estimation algorithm has good results on view perception and PSNR.
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