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https://doi.org/10.3182/20080706-5-kr-1001.01386
Copy DOIJournal: IFAC Proceedings Volumes | Publication Date: Jan 1, 2008 |
Citations: 7 |
A Mura (also called “alluck”) defect that causes local deterioration of colors or brightness on a LCD(liquid crystal display) panel is one of the critical issues in display manufacturing. In this paper, we propose mura detection method using frequency filtering. As a mean of frequency filtering to eliminate the low frequency background term, subtraction of the averaged image from the raw one is utilized. And a fast averaging algorithm has been devised for reducing computational costs. The validity and the performance of the proposed method is discussed through experimental studies on actual LCD panel mura defects.
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