Name
Title | ||
|---|---|---|
Automatic unsupervised classification of snow-covered areas by decision-tree classification and minimum-error thresholding |
Abstract | ||
|---|---|---|
The problem of the classification of snow-covered areas from multispectral images is addressed in this paper. The key idea of the proposed technique is to integrate a decision tree classifier (DTC) and a Bayesian unsupervised thresholding algorithm, aiming at a complete automation of the classification process. Given a classification problem, the DTC approach decomposes the problem in a suitable tree-structured collection of binary sub-problems, for which simple (e.g., threshold-based) decision rules can be defined. The proposed strategy, by adopting the tree classification, discriminates several snow-covered and non-snow-covered classes, by decomposing the related multi-class problem into a set of binary thresholding sub-problems involving the multispectral channels and the resulting normalized difference vegetation index and normalized difference snow index. Focusing on a critical node in the tree, a Bayesian approach is used to expresses the threshold-selection problem as the minimization of a functional related to the probability of classification error. Experiments are reported on MODIS data. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1109/IGARSS.2009.5418270 | Geoscience and Remote Sensing Symposium,2009 IEEE International,IGARSS 2009 |
Keywords | DocType | Volume |
Bayes methods,decision trees,geophysical image processing,image classification,snow,Bayesian unsupervised thresholding algorithm,MODIS,automatic unsupervised classification,binary thresholding sub-problems,decision-tree classification,image classification,minimum-error thresholding,multi-class problem,multispectral images,normalized difference snow index,normalized difference vegetation index,snow-covered areas,tree data structures,unsupervised learning,Snow,image classification,tree data structures,unsupervised learning | Conference | 2 |
ISSN | ISBN | Citations |
2153-6996 | 978-1-4244-3395-7 | 3 |
PageRank | References | Authors |
0.73 | 3 | 4 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Giorgia Macchiavello | 1 | 3 | 0.73 |
| Gabriele Moser | 2 | 919 | 76.92 |
| Boni, G. | 3 | 14 | 3.38 |
| Serpico, S.B. | 4 | 560 | 48.52 |