The use of CBERS image in the delimitation of small cities boundaries in the Brazilian Amazonia region

Autores

  • Sandra Maria Fonseca Da Costa
  • Diogo Correa Da Silva
  • Viviana Mendes Lima

Palavras-chave:

CBERS- HCR image, high resolution image, urban area delimitation, Brazilian Amazon towns.

Resumo

This paper analyzes the use of CBERS (China-Brazil Earth Resources Satellite) high resolution images to map urban limits of a small city in the Amazon Region of Brazil. The use of Sino-Brazilian satellite images to study small cities of the Brazilian Amazon Region is also discussed. A HCR image was used to classify the image of the study area into four classes: urban, forest, clouds, and shadows, by visual interpretation. This map was compared with another map produced with unsupervised classification. A confusion matrix was produced to evaluate the accuracy of unsupervised classification. Comparison between the reference map (visual interpretation) and the unsupervised classification map verified that 82.8% of the areas were classified correctly. This ability to recognize and delimitate small cities in Amazonia demonstrates the quality of the CBERS – HCR image.

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Como Citar

Fonseca Da Costa, S. M., Correa Da Silva, D., & Mendes Lima, V. (2014). The use of CBERS image in the delimitation of small cities boundaries in the Brazilian Amazonia region. GeoFocus. International Review of Geographical Information Science and Technology, (11), 207–225. Obtido de https://geofocus.org/index.php/geofocus/article/view/218

Edição

N.º 11 (2011)

Secção

Artículos

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