Orthophoto is a geometrically corrected aerial photograph in order to achieve uniform scale across the map. Unlike the raw aerial photo, the “orthorectified” photograph is planimetrically corrected and distance measurable.
True orthophoto (orthomosaic)
Both orthophoto and orthomosaic preserve distance. However, unlike orthophoto, orthomosaic also corrects the perspective of camera, so that the final result is created without building lean.
Feiyan has almost two decades of orthophoto processing experience in the scale of 1:500, 1:1000, and 1:2000. Each year, Feiyan can process approximately 300,000 km2 orthophoto/orthophoto for hundreds of clients. The orthophoto/orthomosaic result can be applied in electric utilities, urban planning, forestry, emergency management, transportation, oil and gas, natural resources, etc.
As we all know, aerial photogrammetry technology is playing an increasingly important role in urban planning and construction. Moreover, compared with the traditional topographic survey technology, aerial photogrammetry technology has the advantages of small volume, light weight, ra...
After the LiDAR data is obtained, the data can be post-processed only after data preprocessing. After the data preprocessing, there is a data checking software to conduct a preliminary check on the data results. The general data format check has the follo
Lidar (light detection and ranging) is an optical remote-sensing technique that uses laser light to densely sample the surface of the earth, producing highly accurate x,y,z measurements. Lidar, primarily used in airborne laser mapping applications, is eme