Title :
Novel Float Glass Thickness Measurement based on Image Processing
Author :
Ni, Yang ; Yu-tian, Wang
Author_Institution :
Meas. Technol. & Instrum. Key Lab. of Hebei Province, Yanshan Univ., Qinhuangdao
Abstract :
Non-touch online thickness measurement using CCD vision system is present. Measurement principle, composition of the detection system and the operation process are expatiated. Mathematical morphology theory is successfully used in thickness image analysis and image processing. Distance of two light beams represents the measured thickness. Center orientation is a key aspect of improving precision of thickness measurement. Morphology thinning algorithm is proposed to locate the central lines of line-structured light image. The algorithm can safely thin entities to their central points. Experimental results show that the measurement error is less than 0.8%, and the morphological algorithm presented here is adaptable to real time image processing.
Keywords :
CCD image sensors; automatic optical inspection; computer vision; glass industry; glass manufacture; image thinning; mathematical morphology; measurement by laser beam; thickness measurement; CCD vision system; center orientation; float glass thickness measurement; glass manufacturing; image analysis; image processing; line-structured light image; mathematical morphology theory; morphology thinning algorithm; nontouch online thickness measurement; Charge coupled devices; Electromagnetic measurements; Glass; Image analysis; Image processing; Laser beams; Optical refraction; Surface morphology; Thickness measurement; Velocity measurement;
Conference_Titel :
Computational Intelligence and Design, 2008. ISCID '08. International Symposium on
Conference_Location :
Wuhan
Print_ISBN :
978-0-7695-3311-7
DOI :
10.1109/ISCID.2008.136
