研究生: |
陳洊丞 Chen, Jian-cheng |
---|---|
論文名稱: |
電腦斷層影像與表面封裝元件之校正與缺陷檢測 Calibration and defect detection of SMT components using computer tomography |
指導教授: |
彭明輝
Perng, Ming-Hwei |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 動力機械工程學系 Department of Power Mechanical Engineering |
論文出版年: | 2010 |
畢業學年度: | 98 |
語文別: | 中文 |
論文頁數: | 74 |
中文關鍵詞: | X射線層析攝影合成法 、電腦斷層影像 、缺陷檢測 |
外文關鍵詞: | tomography, PCB, defect inspection |
相關次數: | 點閱:2 下載:0 |
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現代科技日新月異,電子產品不斷推陳出新,在節省成本與縮小產品面積的要求下,PCB板面積不斷下降,導致元件密度也越來越高,加上元件種類規格更加多元化,使得光學檢測效率下降,大大提高檢測的難度;而廠商為了增加PCB板檢測速度,提昇產品品質,線上檢測提供了一個合理的答案,但也增加了檢測的難度。在X射線層析攝影合成原理的系統下,本研究提供一套有效將影像上檢測目標分離出來的程序,在小幅增加檢測時間前提下,大大地提昇線上檢測的效率。
本研究的檢測流程包含前端校正程序,改善影像品質,進而配合各種影像分離手法找出各種檢測目標。依據X射線層析攝影合成原理,投影成像的CCD位置校正為首要工作,而由於X射線層析攝影合成原理的殘影效應影響,故改善影像品質也是需努力的目標,本研究利用背景補償及加強影像對比來降低殘影效應,以增加將檢測目標分離出來的效率。之後針對各種檢測目標,依據其目標特性,使用合適的影像分離技術將檢測目標分離出來。
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