Kartograficzna wizualizacja danych MODIS i SRTM. Część 1

W artykule omówiono analizę danych i narzędzi pod kątem opracowania wspólnej wizualizacji obrazu otrzymanego za pomocą skanera MODIS i numerycznego modelu terenu SRTM oraz kolejne wersje procedury ich wspólnego przedstawienia. W drugiej części, która ukaże się w następnym numerze przedstawiono wyniki w postaci map opracowanych na tej podstawie: Polski w skali 1:1 000 000, Europy Środkowej w skali 1:2 000 000 i Europy w skali 1:10 000 000.

In the years 1999-2000 government agencies of the United States created two sets of geographical data of global range, which were soon put on the Internet. They were images of the Earth's surface in real colors in the resolution of 500 m registered by the MODIS scanner and altitude data (DTM) in the resolution of 100 m registered as part of the SRTM project. The Institute of Geodesy and Cartography in Warsaw decided to analyze the data. It has been assessed that the materials are of great informative value, ideally suited for obtaining an image of the area for the needs of a modern small scale referential map. In order for such a map to be created, the task was to find a way of common visualization of both types of data. The first part of the article is devoted to a discussion of data analysis and of theoretical assumptions of creating a visualization of satellite image and model of terrain as well as to the discussion of successive versions of procedure for their common presentation.