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http://dx.doi.org/10.9717/kmms.2012.15.9.1149

Cause Diagnosis Method of Semiconductor Defects using Block-based Clustering and Histogram x2 Distance  

Lee, Young-Joo (삼성전자 생산기술연구소)
Lee, Jeong-Jin (가톨릭대학교 디지털미디어학부)
Publication Information
Abstract
In this paper, we propose cause diagnosis method of semiconductor defects from semiconductor industrial images. Our method constructs feature database (DB) of defect images. Then, defect and input images are subdivided by uniform block. And the block similarity is measured using histogram kai-square distance after color histogram calculation. Then, searched blocks in each image are merged into connected objects using clustering. Finally, the most similar defect image from feature DB is searched with the defect cause by measuring cluster similarity based on features of each cluster. Our method was validated by calculating the search accuracy of n output images having high similarity. With n = 1, 2, 3, the search accuracy was measured to be 100% regardless of defect categories. Our method could be used for the industrial applications.
Keywords
Semiconductor Defect; Cause Diagnosis; Block-based Clustering; Histogram $x^2$ Distance; Semiconductor Industrial Images;
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Times Cited By KSCI : 1  (Citation Analysis)
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