Source based feature extraction for support vector machines in hyperspectral classification

Gisli H. Halldorsson*, Jon Atli Benediktsson, Johannes R. Sveinsson

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

10 Citations (Scopus)

Abstract

Classification of hyperspectral remote sensing data with Support Vector Machines (SVMs) is investigated. SVMs have shown to perform well in terms of classification accuracies for hyperspectral data sets. On the other hand, the computational burden of SVMs in hyperdimensional space can be quite intense. Therefore, it is important to explore approaches, which lighten the computational burden without sacrificing the overall classification accuracies. Two different feature extraction methods. Decision Boundary Feature Extraction and Nonparametric Weighted Feature Extraction are tested. The hyperspectral data are split into several "independent data sources". The data from each data source are transformed using feature extraction, then two approaches are investigated. In the first approach the data from all sources are classified together with a multisource SVM kernel. In the second approach, the data are classified separately using classical SVM RBF kernel. The results from the SVMs are then fused for final classification. Results are compared and discussed.

Original languageEnglish
Pages536-539
Number of pages4
Publication statusPublished - 2004
Event2004 IEEE International Geoscience and Remote Sensing Symposium Proceedings: Science for Society: Exploring and Managing a Changing Planet. IGARSS 2004 - Anchorage, AK, United States
Duration: 20 Sept 200424 Sept 2004

Conference

Conference2004 IEEE International Geoscience and Remote Sensing Symposium Proceedings: Science for Society: Exploring and Managing a Changing Planet. IGARSS 2004
Country/TerritoryUnited States
CityAnchorage, AK
Period20/09/0424/09/04

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