High and steep slope multi-angle approaching photogrammetry method

• Main Authors: LIU QING, ZHAO XIAOHAN, DONG WENCHUAN, WANG JIA, YUN HAN, HAN JIALI, LI TENGYUE, CHEN JUNQI, ZHANG WEN
• Format: Patent
• Language: Chinese; English
• Published: 08.03.2024
• Subjects: CALCULATING; COMPUTING; COUNTING; GYROSCOPIC INSTRUMENTS; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

The invention provides a high and steep slope multi-angle approaching photogrammetry method, which comprises the following steps: S1, constructing an initial low-resolution slope basic model, and dividing a slope into a plurality of topographic units; S2, establishing a basic model of a shot slope by using methods such as normal photogrammetry and oblique photogrammetry, and extracting topographic information of the slope through the basic model; s3, according to the terrain information unit determined in the S2, multi-angle close route planning and shooting are carried out; the method can effectively reduce shooting blind areas, ensures that as many structural surfaces as possible directly face the shooting direction of the unmanned aerial vehicle, obtains the most comprehensive point cloud data, and can improve the precision of the high and steep slope real scene model. 本发明提出了一种高陡斜坡多角度贴近摄影测量方法，包括以下步骤：S1:构建初始"低分辨率"斜坡基础模型，将斜坡划分为若干地形单元：S2:利用正直摄影测量、倾斜摄影测量等方法建立所拍摄斜坡的基础模型，通过基础模型提取斜坡的地形信息；S3：根据S2中确定好的地形信息单元，进行多角度贴