An automatic chip character checking system for circuit board quality control

Author

Wang, ZhiYan ; Li, Yunjie ; Luo, Zhimin

Author_Institution

Dept. of Comput. Sci., South China Univ. of Technol., Guangzhou, China

Volume

2

fYear

2003

fDate

2-6 Nov. 2003

Firstpage

1767

Abstract

This paper discusses an automatic character recognition system for reading printed character string on chips and to support the quality control of circuit board production, and describes in detail the key technique of the system flow, including image preprocessing, character location and extraction, character normalization, OCR, etc. Some new methods of image binarization and character normalization are also presented.

Keywords

automatic optical inspection; feature extraction; image recognition; optical character recognition; printed circuit manufacture; quality control; OCR; automatic character recognition system; automatic chip character checking system; character location; character normalization; circuit board production; circuit board quality control; image binarization; image extraction; image preprocessing; printed character string; Character recognition; Computer science; Image processing; Image recognition; Optical character recognition software; Printed circuits; Quality control; Robust control; System-on-a-chip; Telephony;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 2003. IECON '03. The 29th Annual Conference of the IEEE

Print_ISBN

0-7803-7906-3

Type

conf

DOI

10.1109/IECON.2003.1280326

Filename

1280326