Algorithms of Automatic Image Measure System

Author

Zhang, Wujie ; Zha, ShiHua ; Li, Di ; Wang, Xu

Author_Institution

Coll. of Mech. Eng., South China Univ. of Technol., Guangzhou

fYear

2006

fDate

20-23 Aug. 2006

Firstpage

888

Lastpage

893

Abstract

In terms of the inspecting and measuring requirements of modern industrial products, i.e. high dimensional measuring precision and high inspecting and measuring speed, a contact-less and automatic image measuring system based on image measuring and inspecting technology is presented. Its components and working principle is also discussed. Measuring principles and algorithms of typical plane geometric figures are analyzed by taking the measurements of the line and circle geometric figures as an example. The recognition of geometric figures based on image feature parameters is presented. After the performance of several autofocus evaluating methods is compared, the algorithm of height measurement by visual automatic focusing is presented. The methods of measurement scale setup and the correction of raster reading error are introduced as well. Experimental results indicate that the system has advantages of non-contact, online, real time, higher precision and rapid speed, as well as strong anti-jamming and stabilization

Keywords

automatic optical inspection; image recognition; industrial control; automatic image measure system; circle geometric figure; image feature parameter; image inspecting system; industrial product; plane geometric figure; visual automatic focusing; Automatic optical inspection; Automobiles; Charge-coupled image sensors; Digital images; Error correction; Focusing; Mechanical variables measurement; Optical losses; Software measurement; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Acquisition, 2006 IEEE International Conference on

Conference_Location

Weihai

Print_ISBN

1-4244-0528-9

Electronic_ISBN

1-4244-0529-7

Type

conf

DOI

10.1109/ICIA.2006.305851

Filename

4097784