求翻译：一个视觉测距系统主要包括系统原理及组成、设备选型、图像处理和实验四个部分。 本文首先设计出系统原理图，然后对阅兵方阵进行图像采集，紧接着将采集到的图像进行处理，最后实验验证。本文的主要内容包括以下几点：(1)系统原理及组成；(2)设备选型；(3)图像处理；（4）实验。是什么意思？

A visual distance measurement system consists mainly of four parts of the system theory and composition, selection of equipment, image processing and experiments. Firstly, design the system diagram on the parade square, the image acquisition, followed by the acquisition to image processing, the fina

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A visual range systems include systems theory and composition, equipment selection, image processing and experiment in four parts. This first design the system diagram, and then on the parade square for image acquisition, followed by the images collected for processing, final verification. The main