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http://dx.doi.org/10.9717/kmms.2015.18.3.312

Self-Reference PCSR-G Method for Detecting Defect of Flat Panel Display  

Kim, Jin-Hyung (Dept. of Mechatronics Engineering, Chungnam National Univ.)
Lee, Tae-Young (Dept. of Mechatronics Engineering, Chungnam National Univ.)
Ko, Yun-Ho (Dept. of Mechatronics Engineering, Chungnam National Univ.)
Publication Information
Journal of Korea Multimedia Society / v.18, no.3, 2015 , pp. 312-322 More about this Journal
Abstract
In this paper a new defect detection method for flat panel display that does not require any separately prepared reference images and shows robustness against problems with regard to pixel tolerance and nonuniform illumination condition is proposed. In order to perform defect detection under any magnification value of camera, the proposed method automatically obtains the value of pattern interval through an image analysis. Using the information for pattern interval, an advanced PCSR-G method presented in this paper utilizes neighboring patterns as its reference images instead of utilizing any separately prepared reference images. Also this paper proposes a scheme to improve the performance of the conventional PCSR-G method by extracting and applying additional information for pixel tolerance and intensity distribution considering the value of pattern interval. Simulation results show that the performance of the proposed method utilizing pixel tolerance and intensity distribution is superior to that of the conventional method. Also, it is proved that the proposed method that is implemented using parallel technique based on GPGPU can be applied to real system.
Keywords
Defect Detection; Flat Panel Display; PCSR-G; Self-Reference; Pixel Tolerance;
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Times Cited By KSCI : 2  (Citation Analysis)
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