通常图像获取的方法有飞点扫描器、电视摄像机(摄像头)、扫描仪和遥感设备如红外扫描仪、多光谱扫描仪等。
Image acquisition methods are usually flying spot scanners, television cameras (cameras), scanners and remote sensing equipment such as infrared scanners, multispectral scanners.
扫描设备有三种类型：光学扫描器，条码阅读器，和char和标记识别设备。
There are three types of scanning devices: optical scanners, bar code readers, and char and mark recognition devices.
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