Producing Seamless Multi-Source Quality-Dependent Digital Terrain Models
نویسنده
چکیده
Digital Terrain Model (DTM) databases are one of the more common tools for precise and continuous representation of our natural environment. New data acquisition technologies yield rapid and frequent updating of existing topographic databases (from here on it will be referred to as DTMs). These technologies present high accuracies and resolution levels that were not known until recently. As a result, an updating process performed on an existing DTM has to answer a growing number of considerations, which are derived from the significant differences exist amongst the different DTMs. This yields the production of a multi-source seamless topographic DTM a data model nowadays maintained by several National Mapping Agencies (NMAs) as well as private companies.
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