地面雷射掃描儀野外距離檢校場設置必要性之研析

Research and Analysis of the Set up Distance Calibration Field with the Ground-based Laser Scanner

劉榮信(Jung-Shin Liu) ； 吳宗江(Tsung-Chiang Wu) ； 陳松安(Sung-An Chen)

《測量工程》 52卷1&2期 (2010/06) Pp. 17-30

https://doi.org/10.29983/JSE.201006.0002

摘要

本文以Opech LIRIS-3D地面雷射掃描儀爲例，於國防大學理工學院設置戶外距離檢校場，設計距離爲50公尺至300公尺，每間隔50公尺架設掃描球，並以兩部同機型儀器掃描50公尺至300公尺之各掃描球，由點雲資料求得掃描球之球心三維坐標，將各球心坐標反算至測站之距離作爲誤差分析數據。採用全測站經緯儀量測各掃描球位置與測站之水平角，天頂距及距離，作爲角度與距離之參考值，以球心坐標反算至掃描儀之距離與參考值相比較即可求得距離誤差值，進而歸納距離之系統誤差曲線。由本研究實驗數據證明，地面雷射掃描儀的確存在距離量測上的誤差，造成此項結果之原因並無法在本實驗中確認，但由實驗成果可確認儀器本身測距系統誤差足以影響距離測設的資料品質。

關鍵字

地面雷射掃描儀 ； 點雲、掃描球

並列摘要

This article is using ”Opech LIRIS 3D Laser Scanner” as the example. First, setting up an outdoor distance calibration at CCIT, NDU. The setting distance is between 50m to 300m. The scanning sphere will be set up in every 50m and two same model scanners will be used to scan each of them from 50m to 300m. From the point cloud data will obtain the 3D coordinate of the center of the scanning sphere. Using the coordinates of each center of sphere to calculate the distance to the station and use this as the data for error analysis. By using the Total Station measure the angles and distances between each scanning sphere and Total Station as the reference values. To get the point clouds data of the scanning sphere from the Laser Scanner and calculate the distance from the center of the scanning sphere to the scanner station in order to compare the distance error with the reference values, and conclude the system error curve of the distance.
From this research, the datum proofs that the Ground-Gased Laser Scanner exists the distance measurement error. The reason for causing the result can't be confirmed in this experiment. However, from the result can be sure that the distance measurement error of the Laser Scanner will affect the distance measurement data quality.

並列關鍵字

Ground-Gased Laser Scanner ； Point Clouds ； Scanning Sphere