Online measuring method for PCB film using linear CCD

Ting Ye; Kaihua Wu; Fei Zhuang

doi:10.1117/12.757097

26 November 2007 Online measuring method for PCB film using linear CCD

Ting Ye, Kaihua Wu, Fei Zhuang

Proceedings Volume 6829, Advanced Materials and Devices for Sensing and Imaging III; 68290M (2007) https://doi.org/10.1117/12.757097
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

Printed circuit board film is used for making PCB. Size and defects are important parameters in PCB films' quality evaluation. An online measuring method based on linear CCD for 500mm width PCB film was proposed. The method included (1) definition of parameters, (2) imaging range, which was wider than a PCB film unit to reduce the errors coming from the assembling of CCD and (3) the 2D scanning of PCB film and CCD. Template matching was used for extracting the interested region. Region growing was used for pinhole detection. Image subtraction was used in breakage detection. And region segmentation was used for size measurement. According to the design and analysis, the online measuring method can meet the demands. Experiments showed that (1) the method can detect and classify PCB films' defects efficiently, and (2) the size measuring accuracy can reach 0.1mm.

Citation Download Citation

Ting Ye, Kaihua Wu, and Fei Zhuang "Online measuring method for PCB film using linear CCD", Proc. SPIE 6829, Advanced Materials and Devices for Sensing and Imaging III, 68290M (26 November 2007); https://doi.org/10.1117/12.757097

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available