共軛球與反射標在不同距離下對三維雷射掃瞄儀精度影響之研究

Abstract

目前國內對於量測的設備，多使用傳統測量儀器，通常傳統測量的方式，只能針對幾個取樣點來評估結構體的幾何變化；伴隨著科技的進步，三維雷射掃瞄技術近年來已有長足的進步，能夠準確且快速的記錄極為複雜的空間資料，已經突破傳統測量技術的瓶頸。 對本研究所選用的三維雷射掃瞄儀機型而言，共軛球與反射標是套合不同測站間連接點雲的重要工具，其精度的表現將大大的影響後續點雲套合精度成果；本研究分別將共軛球與反射標放置於不同距離下，進行重複掃描，在相同的條件下，對共軛球與反射標分析其精度差異；在實際狀況下，三維雷射掃瞄儀往往因作業環境的影響，如通視等問題，共軛點與點雲轉置的位置就必須視狀況而調整其位置，因而產生長短邊的問題，故本研究將其反射標與共軛球配置在與測站之長短距離的情況下，分別進行座標套合交叉比對，來探討三維雷射掃瞄儀對此狀況的精度表現。

The most of normal measure equipments still be used in Taiwan until now, and the normal measure method only can estimate the geometry variation of structure by few sampling points. Because of improvement through technology, 3D Laser Scanner could precise and speedy recently to record the complex space data, and it was beak through the neck of a bottle on traditional measure method.

According to the type of 3D Laser Scanner for this report, Sphere and Target are very important tools to combine with different points and connect with Point Cloud. Their precision can enormously influence on the compound result of Point Cloud.

On this report, the Sphere and Target will placed on different distance individually, to carry out the repeating scan in the same situation to analyze their difference of precise.

In actually situation, 3D Laser Scanner usually depend on the work environment such as observable problem etc, so the Sphere and Point Cloud should be revised the position based on current situation and lead to the“long and short length”problem. Thus the report shows Sphere and Target lay out in“long and short length” situation to proceed the cross-validation of coordinate registration dividedly. In further to discuss the precise of 3D Laser Scanner.