1.

その他

その他
Kacprzak, Dariusz
出版情報: 博士学位論文要旨 論文内容の要旨および論文審査結果の要旨/金沢大学大学院自然科学研究科.  平成13年6月  pp.150-156,  2001-06-01.  金沢大学
URL: http://hdl.handle.net/2297/16342
概要: 取得学位:博士(工学),学位授与番号:博甲第383号,学位授与年月日:平成13年3月22日,学位授与年:2001
2.

論文

論文
谷口, 哲樹 ; 宮腰, 貴久 ; Kacprzak, Dariusz ; 山田, 外史 ; 岩原, 正吉
出版情報: 日本AEM学会誌.  9  pp.9-14,  2001-03-10.  日本AEM学会
URL: http://hdl.handle.net/2297/11800
概要: This paper presents an image processing method utilizing the wavelet transform (WT) for the inspection of printed circuit board (PCB) by using eddy-current testing (ECT) technique. First, undesired components in the ECT image, which degrade the precision of the defect-detection, are removed through two types of filtering operations (based on frequency and amplitude, respectively) utilizing discrete WT. Considering that the ECT measurement is carried out horizontally, the proposed method applies WT only along that direction. Then, to estimate the existence and position of the defect, a correlation-based comparison is made between two images: the one is derived from a reference PCB (nondefect) and the other is from the tested object. The effectiveness compared with conventional approach and problem of the proposed method is investigated through examples of disconnection models. 続きを見る