Digital Orthophoto Programme of Hungary (MADOP)

In the frame of European Harmonisation Programme of the Department of Land Administration and Geoinformation at the Ministry of Agriculture and Rural Development three nationwide connected projects were launched by FÖMI in 2000 to be carried out during 3 years.

These are:

• “Wall to wall aerial photography of Hungary”,

• Creation of 5 m x 5 m resolution DEM of the country,

• Set up of full digital orthophoto coverage of Hungary.

The project “Aerial photography of Hungary 2000” was finished successfully. Now in the archives of FÖMI about 7000 aerial photos at scale 1:30 000 are available in analogue and digital forms. As a result of almost 20 years project – ended in 1999 – Hungary is covered by ~ 4092 map sheets at the scale 1:10 000 in analogue form.

The estimated and overall quality controlled accuracy of contour lines is between ± 0.5-±1.5 m, depending on the interval of contour lines of a given map sheet according to the national standard. In the national archives of FÖMI we have the colour prints, the individual layers of contour lines, planimetry and hydrography of 4098 sheets (altogether 4 x 4098 sheets). During one year period the colour prints and three layers (hydrography, planimetry, contour lines) of 1:10 000 scale topomaps were scanned and geo-referenced. The layers of contour lines of topomaps were vectorised in the period 2000-2003.

The vectorised contour lines served as the basis for creation of 5 m raster size and 0.7 m accurate in Z DEM for the whole country. The 5 m x 5 m DEM of Hungary (about 4 billion points) archived now according to map grid of 1:10 000 and is available for the user community.

A complete photogrammetric technology was elaborated for analytical and digital aerial triangulation to use the existing high accurate 4th order national triangulation network for determination of orientation element of aerial photos taken in 2000.

The technology takes into consideration the creation of orthophotos on the base of DEM and the orientation elements of aerial photos adjusted for the whole country.

An overall quality control was applied for the whole procedure and for every map sheets of digital orthophotos. The accuracy of aerial triangulation is characterised with ±0.25 m in X and Y ground co-ordinates. The “MADOP” project was finished in June 2003.

The high resolution and quality checked orthophotos were archived (about 2.5 terrabyte) as part of meta data base, according to the 1:10 000 map grid and we started to distribute among end-users of several professions. The average accuracy of the orthophotos is characterised by 0.7 m in X, Y on the ground.

The orthophotos geo-referenced with high accuracy that are easy to handle on PC-s – among several other applications – can serve as common spatial reference for the Hungarian GIS and RS systems.

The digital orthophotos are suitable for several applications, as

• Creation Hungarian Land Parcel Identification System (See Chapter 6.1.2.),

• Topographic mapping,

• Recording of statement of several agricultural plants,

• Establishing of land use categories,

• Delineation of waste lands,

• Surveying of soil map contents,

• Delineation of soil erosion areas,

• Mapping of inland waters,

• Regional planning,

• Forest inventory, management etc.

In year 2005. the “wall to wall aerial photography of Hungary 2005” will be completed (the status of aerial photography of the whole country in the middle of July 2005 – about 70 %). The program “aerial photography of Hungary 2005” will be carried out accordint to the parameters of “aerial photography of Hungary 2000”. It means, that the scale is 1:30 000; H = 4500 m; film – color diapozitive; scanning apperture – 21 µm; ground resolution of scanned images -~0.60 m. Due to GPS navigation the co-ordinates of focal points of aerial images will be the same as in year 2000 with accuracy about 50 m. The digital ortophoto with a priory accuracy ~ 0.7 m will be produced based on the same triangulation network and 5 m grid digital elevation model – HUN-DEM, used for MADOP-2000. The MADOP-2005 will be ready and available for use in the middle 2006.

This year we launched a program – the vectorization of planimetric and hydrographic layers of topomaps at scale 1:10 000 for the whole country. The vectorization program of about 2x4000 map sheets will be finished at the and of 2006.

Digital orthophoto of Pannonhalma draped to the high resolution DEM

 

© 2005, Institute of Geodesy, Cartography and Remote Sensing 1149 Budapest, Bosnyák tér 5., Postal address: 1592 Budapest, Pf. 585. Hungary Tel: 36-1-222-5101, Fax: 36-1-222-5112

Last Updated: 2005-12-05 Webmester