【6h】

Superresolution reconstruction of a video captured by a translational vibrated staggered TDI camera

机译:平移交错式TDI摄像机拍摄的视频的超分辨率重建

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摘要

Time-delay and integration (TDI) scanning imaging technique is used in various applications such as military reconnaissance and industrial product inspection. Its high sensitivity is significant in low light-level imaging and in thermal imaging. Due to physical constraints the TDI sensor elements may have a staggered structure, in which the odd and the even sensors are horizontally separated. The electrical cooling system of the detectors, as well as the camera platform, vibrates the system and causes image distortions such as space variant comb effects and motion blur. These vibrations are utilized here in means of superresolution in order to create an improved high resolution sequence from lower resolution sequence in two main stages: inter-frame space-variant motion estimation followed by an efficient implementation of the projection onto convex sets (POCS) restoration method. This work generalizes an algorithm for restoration of a single staggered TDI image preformed previously. The additional information included in an image sequence allows more efficient restoration process, and better restoration results. The lack of any assumption about the correlation between the vibrations of the odd and even sensors enables also an implementation to TDI cameras that don't contain the staggering structure. Experimental results with real degraded thermal video are provided.
机译:时延和积分(TDI)扫描成像技术用于各种应用,例如军事侦察和工业产品检查。它的高灵敏度在低光照水平成像和热成像中很重要。由于物理限制,TDI传感器元件可能具有交错的结构,其中奇数和偶数传感器在水平方向上分开。检测器的电冷却系统以及相机平台使系统振动,并引起图像失真,例如空间变异的梳齿效应和运动模糊。这些振动在这里以超分辨率的方式被利用,以便在两个主要阶段从低分辨率序列中创建一个改进的高分辨率序列:帧间空间变化运动估计,然后有效地实现凸集投影(POCS)恢复方法。这项工作概括了一种用于恢复先前执行的单个交错TDI图像的算法。映像序列中包含的其他信息可以使还原过程更有效,并获得更好的还原结果。无需对奇数和偶数传感器的振动之间的相关性做任何假设,也可以实现不包含交错结构的TDI摄像机的实现。提供了真实降级的热视频的实验结果。

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