DLG (Digital Line Graph) is a cartographic representation of a map. It requires professional geospatial surveying system to process the aerial photos, obtain stereo imageries, collect 3D data, and finally obtain cartographic geospatial information.
The map below shows one of the Feiyan DLG project in scale of 1:500.
Aerial photos: the basics Aerial photographs are a little different than the photos you might take with your own camera. The primary aerial photographic product is a high-resolution (39 megapixel) digital color photograph. Depending on the camera lens, photos can be taken in...
AUTHORS: Leah A. Wasser How LiDAR Works LiDAR is an active remote sensing system. An active system means that the system itself generates energy - in this case, light - to measure things on the ground. In a LiDAR system, light is emitted from a rapidly firing laser. You can imagine...
On the afternoon of April 30, the first press conference of the 2020 Mount Everest elevation measurement was held at the Everest Base Camp, and the 2020 Mount Everest elevation measurement was officially launched. This year marks the 60th anniversary of the first successful summit of ...
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