Development of a High-Performance Stamped Character Reader

Development of a High-Performance Stamped Character Reader

A high-performance optical character reader (OCR) capable of reading low-quality stamped alphanumeric characters, on a metal rod, is described in this paper. Reliable and precise recognition is achieved by means of a special scanner and dedicated recognition module. The scanner revolves around the m...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) Vol. IE-33; no. 2; pp. 144 - 147
Main Authors: Nakamura, Yoshikatsu, Suda, Masato, Sakai, Kunio, Takeda, Yoshihiro, Udaka, Makoto
Format: Journal Article
Language:English
Published: IEEE 01-05-1986
Subjects:
Adaptive control
Application software
Character recognition
Image recognition
Inspection
Manufacturing industries
Optical character recognition software
Optical distortion
Pattern recognition
Programmable control
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Summary:A high-performance optical character reader (OCR) capable of reading low-quality stamped alphanumeric characters, on a metal rod, is described in this paper. Reliable and precise recognition is achieved by means of a special scanner and dedicated recognition module. The scanner revolves around the metal rod and detects characters, thus avoiding rotation of the heavy and long rod. Diffused illumination which produces a clear image, a powerful pattern-matching method-the Multiple Similarity Method (MSM)-implemented by the recognition module, and the use of adaptive rescan control results in a correct recognition rate of 99.93 percent. One recognition module can process images from up to five different scanners. The processing speed is about 1.5 s/rod. The design and industrial application of the system are discussed.
Bibliography:SourceType-Scholarly Journals-2
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ObjectType-Conference Paper-1
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SourceType-Conference Papers & Proceedings-1
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ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.1986.350207