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題 名 | 缺陷圓圓心之影像量測=Vision Measurement for the Center of Imperfect Circle |
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作 者 | 李廣齊; 彭國豪; 陳建雄; | 書刊名 | 國立虎尾技術學院學報 |
卷 期 | 5 2002.03[民91.03] |
頁 次 | 頁143-150 |
分類號 | 448.552 |
關鍵詞 | 影像量測; 缺陷圓; 圓心定位; Image measurement; Imperfect circle; Center-positioning; |
語 文 | 中文(Chinese) |
中文摘要 | 在半導體元件的製程中,印刷電路板(PCB)的圓孔定位以及光學點所提供焊接時座標的參考依據,常因檢測時應打光的方式有所不同或是半導體元件的金屬表面反光,而造成CCD攝影機在取像時圓孔變形、產生雜訊或是光線不足導致影像模糊,其使得在求取定位圓心的座標時產生誤差。本文提出一六點量測圓心的方法,以克服以上述缺陷圓影像量測的問題。由模擬與實際測試的結果知此方法可行,其並且可以準確量測到被遮蔽六十度以上圓之圓心座標。本文亦和其他影像量測圓心的方法比對,六點定圓心法實為較快速且又準確的圓心量測方法。 |
英文摘要 | In the manufacture process of the semiconductor component, we get the positioning center of the circular hole of PCB and the reference coordinates of welding by optical point. But they will cause the circle deformed and will create image noise or blur image when we grab the image from CCD camera by the different lighting method or light source and when the surface of objects inspected reflect the light. Thus will cause the error of center positioning. This paper will propose a center-positioning method of six-points to overcome the problem of the measurement of the imperfect circle. From the results of simulation and experiments, we know that this method is feasible and it can measure accurately the coordinates of the center of the circle which is cover over sixty degrees of other object or deformed. Six-points method is better than the other center-positioning methods by the image measurement; it is more feast and accurate. |
本系統中英文摘要資訊取自各篇刊載內容。