近年來，低成本、高效益的三維掃描器，結合視覺測量的逆向工程已經廣泛的應用在眾多的領域，如在生物醫學：牙齒、牙模重建、人體體型的量測；工業檢測：工件之粗糙度量測、質量控制和逆向工程、逆向工程…等，皆大量運用了三維掃描機來達成三維重建以及分析。其中結構光掃描系統對於高反射率材質進行重建時，會因為表面產生的反射光，導致相機拍攝該區域時產生飽和，造成資訊遺失或錯誤，最終影響重建精度。
　　因此本研究的目的是透過文獻的研究與比較，提出一套能針對金屬材質的物體進行三維重建，並解決反光問題的系統。本研究將利用偽曝光的影像融合方式，透過參考圖關係的計算來產生偽曝光圖像，再透過影像融合的方式來達到高動態圖像的效果，希望透過此系統，在使用結構光掃描金屬物件上的精度與效率有所提升。並透過全因子實驗設計，找到最佳的實驗參數，根據實驗結果，本研究提出的方法可以有效的解決金屬反光掃描的問題，達到預期的精度，透過偽曝光的方式，可以減少拍攝的照片，有效的提升掃描效率。

In recent years, 3D scanners have been widely used in many fields, such as biomedicine, industrial inspection, quality control and reverse engineering etc. They all use 3D scanners to achieve 3D reconstruction and analysis. Among them, when using structured light to scan a metal workpiece, the reflected light generated by the surface will cause the camera's sensor to be saturated during the shooting process. It will lead to the information loss or error, and ultimately affect the reconstruction accuracy.
In this thesis, by reviewing and comparing the literature, we propose a system that can solve reflection problems and reconstruct metallic objects. We will calculate the relationship of the reference image, and generate a pseudo-exposed image through the relationship, and then use the method of image fusion to achieve the effect of high dynamic image. It is hoped that through this system, metal objects can be scanned with structured light, improving precision and efficiency. According to the experimental results, the method proposed in this thesis can effectively solve the problem of metal reflection scanning and achieve the expected accuracy. Through pseudo exposure, the number of photos can be reduced and the scanning efficiency can be effectively improved.

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