ERDAS (Earth Resources Data Analysis Systems) has been a major provider of software for multispectral image analysis integrated with raster geographic information system (GIS) functionality since the early 1980s. In May 2001, ERDAS was acquired by Leica Geosystems of Switzerland as a part of an effort to broaden its geoprocessing capabilities. [Source: Encyclopedia of Geographic Information Science; ERDAS]
erdas
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organizational and institutional aspects