三維量測系統的應用非常廣泛，主要可分為兩大類：接觸式量測系統與非接觸量測系統，本研究主要以非接觸量測系統進行點資料之誤差校正。
鑒於整體美觀與安全性，立體視覺系統通常在設計上加裝玻璃或透鏡來分隔掃描區域與電子零件區，此玻璃的折射現象將造成量測法的誤差。且視覺系統的高精確度與否決定此系統之評價。本研究發展一套因應光線折射的點資料校正法，遵循光線三大定律與視覺系統之深度計算方法，並導入最佳化方法來計算，以提高3D點資料之空間位置的精準度，解決玻璃造成的系統誤差。
掃描系統配備了旋轉軸或平移軸來帶動量測設備，可以達成廣域性、有效率的物體重建目的。針對不同類型之掃描系統，我們提出一套尋找主軸參數的方法，並加入四元數旋轉法與最佳化方法，達到點資料註冊(Registration)之目的，相對地提升物體重建之技術。

Two types of 3D measurement systems are commonly used for industrial applications: contact type and non-contact type. The aim of this research is to reduce errors and correct the 3D-points captured by optical non-contact type measurement system.
In 3D optical measurement system, glasses are usually set up between the electronic components and the scanning area to prevent contamination and for safety/appearance reasons. The value of a 3D measurement system depends on its accuracy. In this thesis, we developed a calibration method for light refraction due to glasses. The method includes an optimization skill for deciding the refraction parameters. This method improves the accuracy of the vision system by reducing the errors cause by the glasses.
Scan systems are commonly integrated with a rotational motor or a linear stage for wide-range scanning. But the axis of the motor may not be aligned perfectly with the principle axis of the scanner’s coordination frame. This may causes point registration problem for reconstruction of the object model. Based on quaternion representation, we proposed another optimization method to find the rotational axis or the transitional axis of the moving part. So that the scanned point clouds can be properly registered.

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