
FOLLOWUS
Department of Electronics and Electrical Engineering, Dankook University, Yongin 448-701, Korea
Hyun Do NAM, E-mail:hdnam@dankook.ac.kr
收稿:2012-03-15,
修回:2012-;9-11,
纸质出版:2012-11
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Void defect detection in ball grid array X-ray images using a new blob filter[J]. 信息与电子工程前沿(英文), 2012,13(11):840-849.
Shao-hu PENG, Hyun Do NAM. Void defect detection in ball grid array X-ray images using a new blob filter[J]. Frontiers of Information Technology & Electronic Engineering, 2012, 13(11): 840-849.
Void defect detection in ball grid array X-ray images using a new blob filter[J]. 信息与电子工程前沿(英文), 2012,13(11):840-849. DOI: 10.1631/jzus.C1200065.
Shao-hu PENG, Hyun Do NAM. Void defect detection in ball grid array X-ray images using a new blob filter[J]. Frontiers of Information Technology & Electronic Engineering, 2012, 13(11): 840-849. DOI: 10.1631/jzus.C1200065.
Ball grid arrays (BGAs) have been used in the production of electronic devices/assemblies because of their advantages of small size
high I/O port density
etc. However
BGA voids can degrade the performance of the board and cause failure. In this paper
a novel blob filter is proposed to automatically detect BGA voids presented in X-ray images. The proposed blob filter uses the local image gradient magnitude and thus is not influenced by image brightness
void position
or component interference. Different sized average box filters are employed to analyze the image in multi-scale
and as a result
the proposed blob filter is robust to void size. Experimental results show that the proposed method obtains void detection accuracy of up to 93.47% while maintaining a low false ratio. It outperforms another recent algorithm based on edge detection by 40.69% with respect to the average detection accuracy
and by 16.91% with respect to the average false ratio.
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