利用近景攝影測量與三維雷射掃瞄技術量測原料盤存之應用

The application of Material Inventory Measurement Using Close-Range Photogrammetry and Terrestrial 3D Laser Scannering

吳偉誠(Wei-Cheng Wu) ； 何恆張(Heng-Chang Ho) ； 張有和(Yo-Ho Chang)

《臺灣鑛業》 68卷3期 (2016/09) Pp. 1-9

摘要

傳統利用全測站經緯儀盤存料堆的測量方法，有著外業時間長、人員現場作業危險性高以及精確度較差的缺點。近來由於攝影測量及三維雷射掃描技術已臻成熟，如果應用於料堆體積測量上可快速獲得高密度及高精度的三維空間資料，且達到改善測量效率與準確性的目的。本研究利用3 種不同類型的測量方法，對於亞泥花蓮廠原料料堆進行實際的料堆測量，並透過建立數值地形模型計算料堆之體積，來探討是否可取代傳統測量方法的實用性。結果發現以三維雷射掃描的結果做為正確值與其它測量方法作比較，得到攝影測量之體積誤差百分比為11.1%，傳統測量之體積誤差百分比為16%。此外，在其它料堆利用攝影測量的方式進行料堆測量時，也遭遇到一些使用上的困難，例如是否有足夠距離進行拍攝或料堆高度過高等。總體而言，各種測量方式各有所長，未來要進行料堆測量前須進行個別的評估，來決定何種測量方式符合效益。

關鍵字

攝影測量 ； 三維雷射掃描

並列摘要

The conventional electronic total station measurement method for stockpile inventory has the drawbacks of long external operation time, high risk to personnel in field operation, and poor accuracy. Recently, the photogrammetry and the terrestrial 3D laser scannering technique has matured. If these techniques are used for stockpile volume measurement, the high-density and high-accuracy three-dimensional spatial information can be acquired so that the measurement efficiency and accuracy can be improved. In this study, three different types of measurement methods were used for performing the field measurement of the stockpile of the raw materials in the Hualien plant of Asia Cement Corporation. The volume of the stockpile was then calculated by the construction of a numerical terrain model so as to explore the possibility of replacing the conventional method and its practicability. In the experiment, the result of three-dimensional laser scanning is used as the correct value for comparison with other measurement results. The volume obtained by photogrammetry has an inaccuracy of 11.1% while the volume obtained by the conventional measurement method has an inaccuracy of 16%. However, the stockpile measurement by photogrammetry may encounter some practical difficulties for some other types of stockpiles, e.g., insufficient distance for the photograph, or excessive height of the stockpile. In general, each measurement method has its own strength for stockpile measurement. Before performing stockpile measurement, it is necessary to evaluate the condition for each case so as to determine the best measurement method with the highest cost effectiveness.

並列關鍵字

Photogrammetry ； Terrestrial 3D Laser Scannering