We present a filtering method for digital terrain models (DTMs). The method is based on mathematical morphological filtering within gradient (slope) defined domains. The intention with the filtering procedure is to improbé the cartographic quality of height contours generated from a DTM based on draping and optimum interpolation methods. The contours from the unfiltered DTM has shown to become ragged and hard-to-interpret—especially in areas of minor slope. The contours from the filtered DTM are significantly more smooth. They are however not smoothed to an extent where local breaks in the landscape are washed out and misrepresented.
|Publication status||Published - 2005|
|Event||6th Geomatic Week Conference - Barcelona, Spain|
Duration: 8 Feb 2005 → 11 Feb 2005
Conference number: 6
|Conference||6th Geomatic Week Conference|
|Period||08/02/2005 → 11/02/2005|
Knudsen, T., & Andersen, R. C. (2005). Gradient based filtering of digital elevation models. Poster session presented at 6th Geomatic Week Conference, Barcelona, Spain. http://www.setmana-geomatica.org/front/abstracts/Dimarts8/G19_abs.pdf