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Robust OCR System for Reading Optically Partially Damaged Characters

机译：强大的OCR系统，用于读取光学部分损坏的字符

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摘要

This paper presents a robust OCR system designed to improve readability of partially damaged characters on silicon wafers that usually occur during semiconductor processes. The system operates on the gray-level images of the wafers grabbed by a CCD camera. The system works with little restriction on character location and background as segmentation and template matching are done automatically. The system also has the unique feature that each character font is mapped to match its template through a non-linear weighting scheme. The combination proves to be very successful in improving software readability for partially damage characters.
机译：本文介绍了一种功能强大的OCR系统，旨在提高通常在半导体工艺中出现的硅片上部分受损字符的可读性。该系统对由CCD相机抓取的晶圆的灰度图像进行操作。由于分割和模板匹配是自动完成的，因此该系统在字符位置和背景上几乎没有限制。该系统还具有独特的功能，即通过非线性加权方案将每个字符字体映射为与其模板相匹配。事实证明，该组合对于提高部分损坏字符的软件可读性非常成功。

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