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- W2030885369 abstract "This paper introduced the machine vision technology into the LCD (Liquid Crystal Display) panel flaw inspection system, in order to detect flaws accurately and quickly. There are two major kinds of flaws in LCD panel: white dots and black dots. Image segmentation can be used to inspect flaws, and a general method is applying a threshold to the whole image. But because of illumination unconformity, the acquired image has varied pixel brightness, and some pixels in the border even have a lower brightness than the black dots. So gradient thresholding based on local pixels is adopted, but because the image sensor and the LCD panel both have a array frame, there exists moiré fringes in the image. Thus, a novel method of gradient thresholding based on moiré fringes is put forward. And noises handling is discussed at end. Experimental results show that the proposed novel method is effective" @default.
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- W2030885369 date "2009-05-11" @default.
- W2030885369 modified "2023-10-17" @default.
- W2030885369 title "Application research of machine vision in LCD panel flaw detection" @default.
- W2030885369 doi "https://doi.org/10.1117/12.828824" @default.
- W2030885369 hasPublicationYear "2009" @default.
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