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In computer science, Orfeo Toolbox (OTB) is a software library for processing images from Earth observation satellites. [2] OTB was initiated by the French space agency [2] in 2006. The software is released under a free licence; a number of contributors outside CNES are taking part in development and integrating into other projects. [3]
Remote sensing applications are similar to graphics software, but they enable generating geographic information from satellite and airborne sensor data. Remote sensing applications read specialized file formats that contain sensor image data, georeferencing information, and sensor metadata .
RemoteView is an electronic light table application, initially developed and released commercially by Sensor Systems in 1996. An electronic light table application makes it possible for imagery analysts to review satellite images on a computer instead of examining film or printed photographs.
Earth observations satellites provide information for research subjects that benefit from looking at Earth’s surface from above (such as meteorology, oceanography, terrestrial ecology, glaciology, atmospheric science, hydrology, geology, and many more). Types of sensors on these satellites include passive and active remote sensors.
Remote sensing can be divided into two types of methods: Passive remote sensing and Active remote sensing. Passive sensors gather radiation that is emitted or reflected by the object or surrounding areas. Reflected sunlight is the most common source of radiation measured by passive sensors.
Volunteered geographic information (VGI) is the harnessing of tools to create, assemble, and disseminate geographic data provided voluntarily by individuals. [1] [2] VGI is a special case of the larger phenomenon known as user-generated content, [3] and allows people to have a more active role in activities such as urban planning and mapping.
Geoinformatics is a scientific field primarily within the domains of Computer Science and technical geography. [1] [2] It focuses on the programming of applications, spatial data structures, and the analysis of objects and space-time phenomena related to the surface and underneath
Spectroradiometry is a technique in Earth and planetary remote sensing, which makes use of light behaviour, specifically how light energy is reflected, emitted, and scattered by substances, to explore their properties in the electromagnetic (light) spectrum and identify or differentiate between them. [1]