Automatic calibration of analog and digital measuring instruments using computer vision

Author

Alegria, F. Corrêa ; Serra, A. Cruz

Author_Institution

Dept. of Electr. & Comput. Eng., Tech. Univ. Lisbon, Portugal

Volume

49

Issue

1

fYear

2000

fDate

2/1/2000 12:00:00 AM

Firstpage

94

Lastpage

99

Abstract

This paper presents an automatic calibration system capable of calibrating measuring instruments that do not have a digital interface. Image analysis algorithms are used to automatically determine the instrument reading. It can be used with analog and with digital displays. The maximum uncertainty in the detection of the pointer´s position in analog instruments is less than the human eye can discriminate

Keywords

Hough transforms; calibration; computer vision; computerised instrumentation; digital instrumentation; instruments; peripheral interfaces; report generators; GPIB board; Hough transform; PC-based system; analog displays; analog measuring instruments; automatic calibration; computer vision; digital displays; digital measuring instruments; image analysis algorithms; instrument reading; pointer position detection uncertainty; report generator; scale ellipses; user friendly interface; Calibration; Computer aided manufacturing; Computer displays; Computer errors; Computer interfaces; Computer vision; Digital communication; Humans; Instruments; Performance evaluation;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.836317

Filename

836317