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識別號0000100013
題名科技化排水基本資料調查先期研究--光碟版=A Preliminary Study of UAV-based Survey on Basic Drainage Information
作者
出版項
台中市 : , 10612
版本項初版
分類號443
編號(GPN/EBN)10106F0021
委辦計畫編號MOEAWRA1060161
中文摘要為配合排水管理需求,近年已完成『區域排水整合型查詢系統平台』架構建置,提供排水路定位、排水調查行動化管理、圖資查詢統計等功能,惟為進一步提昇排水基本資料應用效能,需將各類別排水予以系統化編碼及集水區劃定後,運用高效率之科技化排水調查方法,建立相關排水調查資料庫,並將排水編碼與調查資料圖資進行屬性連結,以供後續在排水管理上之圖資加值應用。 為此,本研究擬以106年度執行,選定以中央管區排-旱溪排水系統為示範區,訂定合宜之無人飛行載具(UAV)於排水基本資料調查應用流程及方法,並運用其空拍成果結合地形圖資方式完成示範區域內之排水基本資料調查內容,以利提供後續辦理排水調查作業時之參考。
英文摘要The governance of drainage is strengthened gradually in recent years accompanied with the global severe weather which brought extremely heavy rain that caused flood. To fulfill the governance of drainage, the administration of drainage facilities is getting important. To enhance the efficiency of drainage administration, the project team suggests a procedure to survey the drainage system in Taiwan with UAV (Unmanned Aerial Vehicle) and submits a feasibility assessment in completing the survey works of drainage facilities in the whole country. There are three problems to collect field data of the drainage area in manual ways. First, it takes a lot of labors, expenses, and times for the survey, but it’s hard to recheck the situation of the facilities. Secondly, it’s hard to know the site situation of the facilities only through photos and reports from the survey. Thirdly, it lacks further applications because the collected data is limited to the facility itself. In this project, UAV borne mapping system provides a smarter way to complete the survey works of drainage areas. It’s feasible to locate and measure the drainage facilities indoor with 3D tiled models rendered from images acquired by camera situated on UAV. Through the panoramic images along the drainage acquired by panoramic camera situated on UAV, user can understand the drainage situation in any place easily and quickly. All the data rendered from the images provide not only detailed information but also high compatibility format (.tif, 3dml, .shp), so the application of the collected data is not limited to the facility itself. It’s suggested that the procedure of UAV-based drainage survey includes vertical and oblique photogrammetry and panoramic photography. The vertical photogrammetry, with the height of about 200 meters from the ground, is suitable for rendering an orthographic image for its stable orientation parameters. Through the vertical photogrammetry and an accurate set of ground control points (GCPs), it’s feasible to locate the drainage facilities on the computer. The oblique photogrammetry, with the height of about 60 meters from the ground, is suitable for creating highly detailed 3D reality models for its more detailed texture information. The 3D reality models provide detailed information of the drainage, and it helps users to find where the drainage facilities are and to record the attributes of them instantly. Moreover, panoramic photography provides user a real-world perspective, so it can reduce user’s time to check the situation of the drainage facilities. The research results suggested that it’s feasible to complete the UAV-based survey works of drainage facilities in the whole country. With the well-referenced orthographic image and 3D tiled model and a real-world perspective panoramic image, user can locate and measure the drainage facilities indoor and reduce the recheck time outdoors. However, it doesn’t mean that UAV-based survey can completely replace the manual ways. It’s still needed to survey the facilities shaded by vegetation personally. In comparison to manual-based ways, UAV-based ways provide more applications in drainage administration. In this project, the 3D-tiled model of Jiyang drainage was applied to simulate the future vision model. With the future vision model, the government achieved good communication with residents in local workshop. 3D GIS is a good platform to integrate 3D-tiled models, orthographic images, panoramic images and so on. With the 3D GIS platform, users can locate, measure and check the situation of the facilities indoor. Moreover, 3D GIS platform is also a good way to accumulate the historical image data. In comparsion with the historical 3D-tiled model of specific facilities, user can monitor the long-term status of the facilities to raise the alarm early before the disaster happens.
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