Optical images with spectral resolution in the order of 10 nanometers are called hyperspectral images.
Hyperspectral sensors, i.e. imaging spectrometers, mounted on different space platforms (like airplanes, UAV and satellites), simultaneously image the target region in the ultraviolet, visible, near-infrared and mid-infrared bands of the electromagnetic spectrum with dozens to hundreds of continuous and subdivided spectral bands.
While obtaining the spatial information of earth surface, hyperspectral images also obtain the spectral information. Compared with multispectral Remote sensing images, hyperspectral images not only greatly improve the information richness, but also provide a more reasonable and effective analysis and processing of this type of spectral data in processing technology.
According to the different performance of different substances in different bands of spectral signals, a curve about the spectral bands and spectral values can be drawn. According to the difference of the curves, we can classify different substances in hyperspectral images.
Aerial photogrammetry is generally low altitude flight, which is easy to operate in airspace and will not be affected by extreme weather. At the same time, it is not limited to the needs of take-off and landing sites. It only needs to select a relatively flat site for take-off and landin...
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