Otro
Proposição de rotina morfológica para detecção de malha viária em imagens orbitais
Registro en:
Ciencia y Engenharia/ Science and Engineering Journal, v. 19, n. 1, p. 1-6, 2010.
0103-944X
2-s2.0-80052098397.pdf
2-s2.0-80052098397
Autor
Santos, Fernanda Puga
Silva, Erivaldo Antonio da
De Albuquerque Nóbrega, Rodrigo Affonso
Resumen
The outdating of cartographic products affects planning. It is important to propose methods to help detect changes in surface. Thus, the combined use of remote sensing image and techniques of digital image processing has contributed significantly to minimize such outdating. Mathematical morphology is an image processing technique which describes quantitatively geometric structures presented in the image and provides tools such as edge detectors and morphological filters. Previous studies have shown that the technique has potential on the detection of significant features. Thus, this paper proposes a routine of morphological operators to detect a road network. The test area corresponds to an excerpt Quickbird image and has as a feature of interest an avenue of the city of Presidente Prudente, SP. In the processing, the main morphological operators used were threshad, areaopen, binary and erosion. To estimate the accuracy with which the linear features were detected, it was done the analysis of linear correlation between vectors of the features detected and the corresponding topographical map of the region. The results showed that the mathematical morphology can be used in cartography, aiming to use them in conventional cartographic updating processes.