




摘" 要:傳統礦山大比例尺地形圖測繪效率低、周期長、作業成本高,針對這一問題,該文在深入分析傾斜攝影測量技術后,提出使用傾斜攝影技術進行大比例尺地形圖測繪的作業方案。首先介紹無人機傾斜攝影技術,其次說明該技術在礦山地形圖測繪中的作業流程,最后以實際項目為例,對作業中的關鍵技術進行介紹,并采用外業實地采集的檢查點,對該文方案生產的地形圖精度進行檢測。結果表明,采用該文方案生產的地形圖,其精度可以滿足1∶500地形圖測繪要求,而且較傳統地形圖測繪來說,效率高、作業成本低、周期短,具有一定的實用和借鑒意義。
關鍵詞:無人機;傾斜攝影建模;實景三維模型;大比例尺地形圖;礦山測繪
中圖分類號:P231" " " "文獻標志碼:A" " " " " 文章編號:2095-2945(2023)25-0193-04
Abstract: The traditional mine large-scale topographic map has the advantages of low efficiency, long period and high operating cost. In order to solve this problem, after an in-depth analysis of tilt photogrammetry technology, this paper puts forward an operation scheme of large-scale topographic map surveying and mapping by using oblique photography technology. Firstly, the oblique photography technology of UAV is introduced, and then the operation flow of this technology in mine topographic map surveying and mapping is explained. Finally, taking the actual project as an example, the key technologies in the operation are introduced, and the check points collected in the field are used to test the accuracy of the topographic map produced in this paper. The results show that the accuracy of the topographic map produced by this scheme can meet the surveying and mapping requirements of 1∶500 topographic map, and compared with the traditional topographic map, the topographic map has high efficiency, low operating cost and short period, so it has certain practical and reference significance.
Keywords: UAV; oblique photography modeling; real scene 3D model; large-scale topographic map; mine surveying and mapping
近年來,無人機攝影測量技術發展迅速,隨著相機重量不斷減輕和相機組合技術的完善,無人機傾斜攝影測量取得了前所未有的發展。隨著無人機價格的不斷降低和操控無人機飛行技術的不斷提升,無人機傾斜攝影測量技術的應用領域越來越廣。數字線劃圖(DLG)是攝影4D產品的重要組成部分,具有很廣的用途[1-3]。傳統的地形圖測繪,是使用GPS-RTK進行全野外作業,然后再進行內業連點成圖。其分為內外業2部分,外業采集特征點和關鍵點,并繪制草圖,內業再將外業采集的坐標錄入到專業的軟件中,結合繪制的草圖,將地形圖數字化出來。這種方式的優點是采集的點位精度高,但是其他點位都是內插和擬合得到的,精度不受保障[4-5]。……