Model of a TDI line scan camera and its electronics

Yong Feng, Xiaoli Chen, Xuqiang Yang, Xinghuo Yu
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引用次数: 10

Abstract

This paper proposes a model of a TDI line scan camera and its electronics. The model consists of three parts, the camera geometric model, the TDI CCD line scan sensor model and the electronics model. The camera geometric model gives a perspective transformation from continuous known objects to a discrete image on the TDI CCD sensor. The mathematical relationship between the amount of incident light and the analog output signal of a TDI CCD sensor is established. Finally, the camera electronics including pre amplifier, DC restore, correlated double sampling (CDS), gain amplifier, and A/D converter are modeled. The model of a TDI line scan camera and its electronics is useful to design and evaluate the electronics of the camera, to develop the virtual CCD camera and to research the methods of enhancing the image quality.
TDI线扫描相机的模型及其电子元件
本文提出了一种TDI线扫描相机的模型及其电子元件。该模型由相机几何模型、TDI CCD线扫描传感器模型和电子学模型三部分组成。相机几何模型给出了从连续已知物体到离散图像在TDI CCD传感器上的透视变换。建立了TDI CCD传感器入射光量与模拟输出信号之间的数学关系。最后,对相机的前置放大器、直流恢复、相关双采样(CDS)、增益放大器和A/D转换器等电子器件进行了建模。TDI线扫描相机及其电子学模型对相机电子学设计和评价、开发虚拟CCD相机以及研究提高成像质量的方法具有重要意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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