本文讨论了一种基于光学标记识别技术的文档图象识别系统，重点阐述了该系统的设计思想和实现技术。

This paper discusses a document image analysis system based on optical mark recognition. The design method and implementation techniques are emphasized.

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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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