Development of Real-Time TCP/COF Inspection System using Differential Image
차영상을 이용한 실시간 TCP/COF 검사 시스템 개발

Sang-Won Lee, Hwan-Yong Choi, Dae-Jong Lee, Myung-Geun Chun
2012 Journal of Korean institute of intelligent systems  
In this paper, we proposed a faulty pattern detection algorithm of TCP(Tape Carrier Package)/COF(Chip On Film), and implemented a real-time system for inspecting TCP/COF. Since TCP/COF has very high resolution having several micro meters, the human operator should visually inspect all the parts through microscope. In this work, we implement an inspection system to detect the faulty pattern, so the operator can visually inspect only the designated parts by the inspection system through the
more » ... r. The proposed defects detection algorithm for TCP/COF packages is implemented by the pattern matching method based on subtracting the reference image from test image. To evaluate performance of the proposal system. we made various experiments according to type of CCD camera and light source as well as illumination projection method. From experimental results, it is confirmed that the proposed system makes it possible to detect effectively the defective TCP/COF film.
doi:10.5391/jkiis.2012.22.1.87 fatcat:4mv4rtg3ovhu7fckhs7yoftkwe