Logo Leibniz Universität Hannover
Logo: Institute of Photogrammetry and GeoInformation
Logo Leibniz Universität Hannover
Logo: Institute of Photogrammetry and GeoInformation
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What is Photogrammetry and Remote Sensing?

Photogrammetry and Remote Sensing is used for the contact less collection and surveying of objects by means of imagery. Today the formerly independent subjects "Photogrammetry", with the main focus on geometric questions, and "Remote Sensing", which mainly deals with the interpretation of imagery, grow together more and more. This trend is expressed with '&' in "Photogrammetry & Remote Sensing".

The main fields of application of Photogrammetry & Remote Sensing are the collection and the update of topographic data for Geographic Information Systems (GIS), the collection of environmental parameters (e.g. land coverage, water pollution, soil erosion) as well as 3D-measurement of objects in industry, medicine, architecture, archeology and other subjects. The connection of Photogrammetry & Remote Sensing with other subjects of surveying is shown in the graphics.

 

Today the main focus in research, development and practice lies in DIGITAL Photogrammetry & Remote Sensing: digital imagery is generated with the aid of CCD-Sensors and is processed in the computer in close coupling with GIS. A main aspect is the possibility of AUTOMATION of the various job steps. Besides the vision of the seeing (and understanding) robot there exist highly relevant tasks, e.g. the automatic building of digital terrain models or the automatic extraction of topographic objects from aerial and satellite imagery.

Concluding the definition of Photogrammetry & Remote Sensing is specified, which was published by "International Society for Photogrammetry and Remote Sensing" in 1996: "The art, science and technology for the collection of reliable information about objects of the physical world and the environment by means of recording, measurement and interpretation of imagery and digital embodiments of it, which have been gathered through contact less sensors."

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