攝影測量技術應用於管線資料建置之研究

我國自1992年起開始推動公共管線資料庫建置，現行之建置工作分為道路設施物定位調查與管線資料轉繪工作，後者之工作係由前項調查成果為基礎，另結合管線單位所提供之竣工圖，並參考現場道路或明顯特徵物來進行數化轉繪。本研究之目的即是配合資料庫建置工作內容，先針對如何應用UAV攝影建模方法，來進行道路設施物定位調查作業成效之探討；其次則使用近景攝影測量方式，對埋設管線之影像數據進行解算，以探討其作業程序之有效性。經由現地實證後發現，UAV攝影建模應用在道路設施物定位調查工作時，無法量測之數量比率達13%，且高程精度仍無法確保；而採近景攝影測量建置挖埋管線三維模型時，可在10分鐘內獲得足以解算之資料，且以預設操作模式即可讓非專業人員進行操作，另透過尺度的約制，長度量測誤差當可小於±10%。

關鍵字

公共設施管線資料庫；攝影測量；無人飛行載具

並列摘要

Since 1992, the construction of public pipeline database has been promoted by our government. The current construction work is divided into road facility surveying and pipeline map drawing. The latter work is based on the results of the previous surveying work, and referred to the on-site roads or obvious features for digital mapping. This study has two goals, following with the pipeline database construction work. Firstly, it is to study the use of the UAV modeling to realize the effectiveness of the road facility localization. Secondly, it is to study the use of the close-range photogrammetry to solve for the buried pipeline image and explore the feasibility of its operating procedures. It was found that the UAV modeling application can not perfectly measure the facility by 13%, and the accuracy in height is still not guaranteed. Moreover, when photogrammetrically constructing a 3D model of the buried pipeline, it is possible to obtain sufficient data for calculation within 10 minutes, the non-professionals can be operated in a default operation mode, and the error of the length measurement is less than ±10% with a scale constrain.