量子电子学报, 2019, 36 (4): 385, 网络出版: 2019-08-13   

基于时间和空间关联的运动物体成像方案研究

Imaging scheme of moving object based on temporal and spatial correlation
作者单位
1 南京邮电大学信号处理与传输研究院, 江苏 南京 210003
2 阜阳师范学院信息工程学院, 安徽 阜阳 236041
摘要
针对运动物体,提出了集时间和空间关联于一体的成像方案。物体的运动被分割为一系列的图片帧,第一帧选作空间关联的目标物体。将帧间运动物体相对位置信息编码构成的时间信号作为时间关联的目标信息,通过空间和时间关联成像技术,非局域地获取第一帧图片和帧间时间信号;根据设定的规则,将时间信号转换为帧间运动物体的空间相对位置,结合第一帧图片对运动物体进行移位操作,获得第二帧图片;在第二帧图片基础上,结合时间关联恢复的运动物体空间相对位置信息,恢复出第三帧图片。以此类推,获得所有帧图片,最后合成物体的运动。通过数值仿真对所提方案的可行性进行了验证。与已有运动物体关联成像方案相比,所提方案降低了运动物体多帧关联成像的数据量和重构时间,为非局域地探索运动物体成像提供了新的研究思路。
Abstract
An imaging scheme based on temporal and spatial correlations is proposed for moving object. The motion of object is divided into a series of frames, and the first frame is selected as the target object of spatial correlation. The relative position information of the moving object between any two adjacent frames is encoded into time signal, and the signal becomes the temporal correlation target. With the spatial and temporal correlation imaging techniques, the first frame image information and any inter-frame time signal can be obtained. According to the set rules, the time signal is later converted into the spatial relative position of the moving object between frames, and the moving object is shifted based on the first frame image to obtain the second frame image. On the basis of the second frame image, the third frame image is reconstructed by combining the spatial relative position information of the moving object recovered by temporal correlation. And so on, the moving object imaging is obtained by integrating all frames information finally. The feasibility of the proposed scheme is verified by numerical simulation. Compared with the existed correlation imaging scheme for moving objects, the proposed scheme reduces the data amount and reconstruction time of multi-frame correlation imaging of moving objects, and provides a new research method for exploring the imaging of the moving objects nonlocality.

郭辉, 魏朝鹏, 何儒勇, 林泽群, 王乐, 赵生妹. 基于时间和空间关联的运动物体成像方案研究[J]. 量子电子学报, 2019, 36(4): 385. GUO Hui, WEI Zhaopeng, HE Ruyong, LINZequn, WANG Le, ZHAO Shengmei. Imaging scheme of moving object based on temporal and spatial correlation[J]. Chinese Journal of Quantum Electronics, 2019, 36(4): 385.

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