检测方法

專利類型

發明

專利國別 (專利申請國家)

大陸

專利申請案號

202011229886.9

專利證號

6369405

專利獲證名稱

检测方法

專利所屬機關 (申請機關)

國立清華大學

獲證日期

2023/09/29

技術說明

一種檢測方法包含：將相關於一印刷電路板的一輸入影像作二值化處理；判斷該輸入影像中屬於黑白交界或該影像邊框的多個輪廓線，並定義為多個線段物件；對每一該線段物件根據一周長閥值及通過一影像邊框的次數作篩選，而獲得多個候選斷線物件；根據每一該候選斷線物件的一斷線端的一中點座標，及一第一設定線距作判斷是否分類為屬於斷線的一第一群組。藉此實現一種不需要使用標準樣板且不需要大量資料而能夠偵測印刷電路板的線路斷線位置的檢測方法。 A detection method includes: binarizing an input image related to a printed circuit board; determining a plurality of contour lines that belong to the boundary of black and white or the border of the input image, and defining as a plurality of line objects; filtering each line object according to a perimeter threshold and the number of times it passes through an image frame to obtain a plurality of candidate disconnected objects; judging whether each candidate disconnected object is classified as a first group of disconnected objects based on a midpoint coordinate of a disconnected end of each candidate disconnected object and a first set line distance. In this way, a detection method that can detect the line disconnection position of the printed circuit board without the use of standard templates and a large amount of data is realized.

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