Digital Terrain Model of Slovenia 12,5 m

The duration of the main part was between 2001 and 2005. More than 25 different datasets were used. Production bases on the following hypothesis: with appropriate approach is possible to expose the best properties of existing datasets and integrate them into model that is overall better than particular datasets. Method of weighting sum with geomorphological corrections had been developed. The main advantages of enhanced DTM production are: DTM is visually and geomorphologically homogenous and of better quality than any dataset, applied methodology will be use for further improvement of DTM – with new datasets, quality of DTM is evaluated for every data element, portion of every dataset element used for DTM modelling is known. DTM project area contains of 2.7 of size of the Slovenia (55,000 km2). Average vertical precision is 3.2 m, while on plains it is 1.1 m, on low hills 2.3 m, on moderate hills 3.8 m, and 7.0 m in the mountain areas respectively, with resolution of 12.5 m.

Theoretical background:

DTM from various data sources of different quality, 2001

Surveying and Mapping Authority of the Republic of Slovenia - digital elevation models

Digital terrain models in Slovenia

Chronology of DTM production of Slovenia, 2003

Production of Integrated DTM from Multiple Datasets of Different Quality, 2005

Suitable digital elevation model, 2005

Digitalni model reliefa iz različnih podatkov (Digital terrain model), 2006, ŽiT, TZS.

Methods for visual quality assessment of a digital terrain model, 2009