In:
Acta Amazonica, FapUNIFESP (SciELO), Vol. 42, No. 2 ( 2012-06), p. 205-214
Abstract:
The objective of this work was to analyze the potential use of SAR polarimetric images from the TerraSAR-X sensor system, at StripMap mode, to map land use and land cover in SW Brazilian Amazon. Amplitude images at polarizations A HH, A VV, A 〈 HH.VV* 〉 , derived from the co-variance matrix, as well as the entropy A Entropia, derived from the decomposition of targets by eigenvalues, are parts of the datasets investigated individually or in combined form. Two classifiers were used: the first is based on statistical functions of maximum likelihood (MAXVER), and the second is the contextual method (Context). The thematic results from these classifications were evaluated by a confusion matrix and by the Kappa index. Summarizing we can state that the components A 〈 HH.VV* 〉 and A Entropia, gave a significant contribution to the image classification procedure, considering specially the Context method, whose performance reached 78% of Global Accuracy and a Kappa index of 0.70.
Type of Medium:
Online Resource
ISSN:
0044-5967
DOI:
10.1590/S0044-59672012000200004
Language:
Unknown
Publisher:
FapUNIFESP (SciELO)
Publication Date:
2012
detail.hit.zdb_id:
2088290-7
SSG:
12
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