無人載具產製向陽國家森林遊樂區地表地形

The UAV Images Applied to Produce DSM on Siangyang Forest Recreation Area

蔡欣穎(Hsin-Ying Tsai) ； 許中立(Chung-Li Hsu) ； 邱欣尉(Xin-Wei Giu) ； 張蘇能(Shu-Neng Jhang)

《坡地防災學報》 14卷2期 (2015/12) Pp. 35-58

摘要

本研究以臺東向陽森林遊樂區為研究區域，先利用衛星定位測量聯合解算出控制點高精度坐標，再透過兩年之兩期拍攝，擬合影像給定地理定位資料，並製作正射影像及數值地表模型，並比較地形之差異。結果顯示本研究所產製為真實地形表現兩期之數值地表模型土石量皆有高估之情形， 並比較2014年所產製地載光達資料，總土石量與第二期相差7.364倍，第二期與之比較明顯有高估之情形，飛行航拍在高山地區因上、下高差而為飛行高度無法隨意降低、調動，因而無法拍出理想結果之解算。另外產製之二期飛行運用設備不同，分析方式與解算亦受影響出產。分析所得之數值地表模型雖已能大致表現該地區之地形起伏變化，但用於工程設計與土地鑑界等則仍有精度上的問題要再克服。

關鍵字

航空攝影測量 ； 無人載具 ； 航測影像處理軟體 ； 地形

並列摘要

In this study, the experimental site located at Siangyang Forest Recreation Area in Taitung. First, used of satellite positioning measurements joint solves for high precision GCP's 3D coordinates. Secondary, used shooting image between in 2013 and 2014. Third, fitting image given GCP for geographic location and produced orthophoto and digital surface model. Finally, compared the difference in terrains. The results showed that in this study the production of real value of the surface which digital surface model bath had system error, to compare with DSM and LiDAR produced DEM, bath data were same period in 2014, and calculate total earthwork quantity. Bath data were difference of 7.364 times. 2014's DSM has over-valuation. Aerial flight in mountain areas due to the Altitude difference and flight height, it can't be reduced, therefore can't have the good solver results. Also two different production system of flight using equipment, analysis methods and solvers also affected. Although producing of the digital surface model can roughly performance of the region's topography surface situation, but it has problem of accuracy to overcome, if applied in engineering design or homeland identify.

並列關鍵字

Photogrammetry ； Unmanned aerial vehicle ； Pix4Dmapper ； Terrain