Title :
Wavelet feature extraction and genetic feature selection for multisource data
Author :
Ulfarsson, Magnus Orn ; Benediktsson, Jon Atli ; Sveinsson, Johannes R.
Author_Institution :
Eng. Res. Inst., Iceland Univ., Reykjavik, Iceland
Abstract :
A linear feature extraction method based on the discrete wavelet transform (DWT) is applied. A binary genetic algorithm is used to select the best features from the different DWT representations in terms of cost. The feature extraction/selection methods are applied in classification of multisource remote sensing and geographic data. In experiments, the proposed methods performed well in terms of overall accuracies as compared to results obtained with other well-known feature extraction/selection methods.
Keywords :
discrete wavelet transforms; feature extraction; genetic algorithms; geography; geophysical signal processing; image classification; image representation; neural nets; remote sensing; sensor fusion; wavelet transforms; DWT; binary genetic algorithm; classification; discrete wavelet transform; feature selection; genetic feature selection; geographic data; linear feature extraction; multisource data; remote sensing; representations; wavelet feature extraction; Costs; Discrete wavelet transforms; Energy resolution; Feature extraction; Genetic algorithms; Genetic mutations; Neural networks; Remote sensing; Signal resolution; Wavelet domain;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2002. IGARSS '02. 2002 IEEE International
Print_ISBN :
0-7803-7536-X
DOI :
10.1109/IGARSS.2002.1027172