Photogramentry

 

Photogrammetry is the method of measuring objects of 2D or 3D image from photogrammes. We say commonly photographs, but it may be also imageries taken by video or CCD cameras or radiation sensors such as scanners, stored electronically on tape or disk.

We have vast experience in production of land base maps, digital Photogrammetry and other related GIS requirements. And these services of GIS are provided by us by using variety of GIS and Photogrammetric software.

Photogrammetry projects range from large-scale mapping over hundreds of miles to close-range records of miniature models and sets for the film industry. We provide contour data for the forest industry, digital elevation models for engineering projects and Land base physical features to be used in GIS. Our Photogrammetric facility is equipped with modern digital equipment.

We have facilities to service following Photogrammetric requirements:

  • Stereo compilation.
  • Ortho photo- rectification
  • Aerial triangulation
  • Feature extraction and Contour Generation
  • DTM compilation and Break line Capture
  • Project design and specification.
  • Thematic Mapping from Satellite Imagery

Photogrammetry is the science of making scale-accurate maps from aerial images that are captured using a precision-mapping camera. A wide range of photo- and vector-based products (such as Orthophotographs and Planimetric and Topographic maps) are produced using photogrammetry. There are a variety of uses for photogrammetry.

Photogrammetry, in other words is the technology of obtaining reliable information about physical objects and the environment through the processes of recording, measuring, and interpreting photographic images and patterns of electromagnetic radiant energy and other phenomena.

The results can be of different types :

  • Coordinates of the required object-points.
  • Topographical and Thematics maps.
  • Rectified photo (Ortho-photo).

Most important feature of Photogrammetry is the fact, that the objects are measured without being touched. Therefore, the term remote sensing is used by some authors instead of Photogrammetry.

One of the most common uses of photogrammetry is the analysis of aerial photography to extract ground elevations for the production of topographic maps. However, the field also includes the production of digital orthophotographs and digital terrain models. Among the users who are closely related to photogrammetry are architect, civil engineers, arechealogists, surgeons or police department and many others.

Creating 3D models to the highest accuracy and detail means that we have gained invaluable experience in Photogrammetry work and we are able to apply this technology to a host of related causes, including:

  • Conventional 2D maps from Ortho-rectified imagery.
  • Terrain maps or contour maps .
  • Models for flood modelling.
  • Surveying for new roads, in particular in hilly areas.
  • Height models for noise and pollution studies.
  • Telecoms mast installations.
  • Pipeline routes.

 

 

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