Photogrammetric processing

Photogrammetric processing can be used for geocoding, orthorectification, DEM and DTM generation. The latest methods of photogrammetric processing are based on high-speed computers with powerful software and reliable stereo monitors.

The technology of photogrammetric processing of remote sensing data is the first step in the operating procedure of processing and analysis. SOVZOND specialists perform a full range of photogrammetric processing of remote sensing data:

orthorectification of satellite imagery using additional data provided by a customer (control points, raster and vector maps);
the generation of seamless orthomosaic using images from different satellites;
the generation of composite images;
the generation of the map in customer projection;
DEM and DTM generation.


Orthomosaic	DTM

An orthophotomap is a map made by merging orthophotos — aerial or satellite photographs which have been transformed to correct for perspective so that they appear to have been taken from vertically above at an infinite distance. The orthophotomap doesn’t only perform the Earth's surface, but also it is the basis for topographic maps and plans.

An orthophotomap is a map made by merging orthophotos — aerial or satellite photographs which have been transformed to correct forperspective so that they appear to have been taken from vertically above at an infinite distance. The orthophotomap doesn’t only perform the Earth's surface, but also it is the basis for topographic maps and plans.

Orthomosaic is the result of color alignment and merging several orthorectified images in one continuous image with a predetermined visual quality.

The generation of color composite images from multispectral images in narrow spectral zones is the traditional way to solve thematic tasks in remote sensing, it is a common method of multispectral image interpretation.

The sources of raw data for DTM generation are topographic maps, aerial and satellite images, altimetry and radar imagery, data of satellite system positioning, leveling, etc.