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framework level real 3D model, digital elevation model (DEM) and digital surface model (DSM) have been completed for real scene 3D surveying and mapping for 3D Wuhan.

Wuhan basic surveying and mapping project and real scene 3D production

Digital watershed project's LiDAR

Guiyang project's DEM

Under the same flight conditions, the coverage area is wider, effectively reducing the number of routes and clips, saving a lot of flight time, reducing the number of image control points, and better ensuring the progress of the project.

Huai'an project's DOM

Feiyan use DLG to process aerial remote sensing images, obtain the original position and attitude of the images, and form a stereo image pair through the correlation of adjacent images. Then software and professional hardware equipment are used to track the 3D in the 3D visual formation, collect the 3D data, and then import the map editing system for editing, and finally obtain vector geographic information.

Tengger Desert Project's 1:1000 scale DLG

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