Production of integrated digital terrain model from multiple datasets of different quality

The objective of this paper is to discuss methods of producing a digital terrain model (DTM) from different quality datasets. The current quantity of DTMs and other spatial databases offers potential for an enhanced production of DTMs with a better quality than is currently obtainable. Two methods of integrating different datasets are described in this paper. The first is based on the simultaneous interpolation of all useful spatial data sources, and is supported by a proper prediction function according to the weights. The second – weighted sum of data with geomorphologic enhancement – sequentially combines individual datasets according to their weights and is maintained by geomorphologic enhancement. The weights in both methods depend on the output of the used spatial datasets quality control. The methods are tested with regard to original methodological solutions of DTM production developed for the integration of datasets.

[1]  K. Oštir,et al.  Interferometric generation of DEM for mobile telephone network planning , 1999 .

[2]  Igor V. Florinsky,et al.  Errors of signal processing in digital terrain modelling , 2002, Int. J. Geogr. Inf. Sci..

[3]  P. Y. Georgiadou,et al.  Beyond education : capacity building for geoinformatics , 2002 .

[4]  B. Csathó,et al.  MULTI-SOURCE DEM EVALUATION AND INTEGRATION AT THE ANTARCTICA TRANSANTACTIC MOUNTAINS PROJECT , 2000 .

[5]  Interpolation nach kleinsten Quadraten versus Krige-Schätzer , 1997 .

[6]  D. Chapman.  Geoinformation: Remote Sensing, Photogrammetry and Geographic Information Systems. , 2003 .

[7]  Ángel M. Felicísimo,et al.  Parametric statistical method for error detection in digital elevation models , 1994 .

[8]  Peter F. Fisher.  Animation of Reliability in Computer-generated Dot Maps and Elevation Models , 1996 .

[9]  K. Kraus,et al.  Determination of terrain models in wooded areas with airborne laser scanner data , 1998 .

[10]  Gerard B. M. Heuvelink,et al.  Error Propagation in Environmental Modelling with GIS , 1998 .

[11]  Joseph. Wood,et al.  The geomorphological characterisation of Digital Elevation Models , 1996 .

[12]  Zoran Stancic.  DATA INTEGRATION FOR THE DTM PRODUCTION , 2000 .

[13]  C. Dana Tomlin,et al.  Geographic Information Systems and Cartographic Modelling , 1990 .

[14]  Peter F. Fisher,et al.  Assessing interpolation accuracy in elevation models , 1993, IEEE Computer Graphics and Applications.