|The Production co-operative "GEO" performs works on processing of materials spaceshoots on digital photogrammetric systems, working out of general layouts and schemes of territorial planning of settlements and other town-planning documentation, electronic cartography.
Processing of spaceshoots
For creation of a database of various GIS-projects the data of remote sounding of the Earth is used. The measured size in ДЗЗ is the electromagnetic energy radiated by investigated object.
The wide range of radiations from 0.4 microns-30 of m. is used in this connection various means of shooting are applied: photographic, television, scanning, radar-tracking, etc. For creation and replenishment of cadastral databanks practical interest is represented by photographic images which are registered on a film.
Technologies photogrammetric processings of materials of shootings developed and improved within century. The most perfect now are analytical and digital. Company "GEO" uses digital photogrammetric systems.
Digital photogrammetry, unlike use of physical images on glass, a film or a paper, processes the image in the digital form in the computer. Thus the photographic image is transformed to the digital form by scannings. Images also can be received in the digital form directly from the special chamber established on various carriers.
By scanning, the image shares on certain quantity of the tiny equal areas named in pixels. Each such area contains the sufficient information concerning colour and colour density. In digital photogrammetry accuracy of reception of results increases with increase of the permission of scanning. The size of pixel, the more precisely result less.
You can look complete works on cartography and town-planning here.