| Summary: | Definition of a term digital terrain model that can be shortly described as 'digital description of the Earth's surface' was analysed. Meaning and usage of terms 'digital terrain model' or shortly DTM and 'digital elevation model' or DEM were cleared up. DEM is a simple recording of heights as attributes to a two-dimensional square grid (raster). Conception of DTM is much more; it is a complex presentation of surface that includes spot heights,structural points and lines, and other geomorphological features. Among experts and users abbreviation DEM (digital elevation model) became familiar for both, DTM and DEM, but in Slovenia DMR (it denotes DTM in English) above all. As for definition DTM contains whole definition of DEM and with regard to historical development of both concepts in Slovenia, the term 'DMR' can be used (in spite of small meaning incorrectness).
|
|---|