Due to the fact that the traditional high dynamic range (HDR) imaging methods cannot be used for satellites, finding a way to generate HDR remote sensing images from the satellites has long been explored in the field of remote sensing imaging. In this article, a systematic method of synthesizing the HDR remote sensing images based on a new registration algorithm and virtual digital delay integration (TDI) technology is proposed. First, a series of original images are generated by the fast continuous shooting method through a push-broom spaceborne camera. Then, a new registration algorithm with high accuracy and high robustness is proposed in this article, which is used for image registration. Finally, an HDR multiframe image synthesis algorithm is used to generate high-quality and high signal-to-noise-ratio HDR images. This technology greatly improves the image information acquisition capabilities of digital TDI area scan cameras.

中文翻译：

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基于虚拟数字TDI的星载CMOS相机HDR合成技术

由于传统的高动态范围（HDR）成像方法无法用于卫星，因此在遥感成像领域长期以来一直在探索如何从卫星生成HDR遥感图像。本文提出了一种基于新配准算法和虚拟数字延迟集成(TDI)技术的HDR遥感影像系统合成方法。首先，通过推扫式星载相机采用快速连拍方法生成一系列原始图像。然后，本文提出了一种新的高精度、高鲁棒性的配准算法，用于图像配准。最后，采用HDR多帧图像合成算法生成高质量、高信噪比的HDR图像。