Original scientific paper

Research on Topographic Map Updating

Ivana Javorović
Miljenko Lapaine
Ivana Lampek-Pavčnik

Abstract

The investigation of interpretability of panchromatic satellite image IRS-1C integrated with multispectral Landsat TM image with the purpose of updating the topographic map sheet at the scale of 1:25 000 has been described. The geocoding of source map was based on trigonometric points of the map sheet. Satellite
images were geocoded using control points selected from the map. The contents of map have been vectorized and topographic database designed. The digital image processing improved the interpretability of images. Then, the vectorization of new contents was made. The change detection of the forest and water area was defined by using unsupervised classification of spatial and spectral merged images. Verification of the results was made using corresponding
aerial photographs. Although this methodology could not insure the complete updating of topographic map at the scale of 1:25 000, the database has been updated with huge amount of data. Erdas Imagine 8.3. software was used.

Keywords

topographic map updating; satellite images

Hrčak ID:

2643

URI

https://hrcak.srce.hr/2643

Publication date:

2.9.2002.

Article data in other languages: croatian

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