Title :
Feature Selection for Morphological Feature Extraction using Randomforests
Author :
Joelsson, Sveinn R. ; Benediktsson, Jon Atli ; Sveinsson, Johannes R.
Author_Institution :
Department of Electrical and Computer Engineering, University of Iceland, Hjardarhaga 2-6, 107 Reykjavik, Iceland. sveinnj@hi.is
Abstract :
Morphological feature extraction (MFE) has been successfully used to increase classification accuracy and reduce the noise level for classification or aerial images. In this paper we explore feature selection and extraction for MFE using random forests (RFs) for classification and feature selection. The approach is compared to MFE from principal components extracted from the data, by principal component analysis (PCA), which has been successful in the past. The experimental results presented in this paper show that by estimating the most important features of our data set using RFs, and selecing a few of the features for MFE yields equal or better accuracies than by using PCs.
Keywords :
Classification tree analysis; Data analysis; Data mining; Error analysis; Feature extraction; Noise level; Personal communication networks; Pixel; Principal component analysis; Yield estimation;
Conference_Titel :
Signal Processing Symposium, 2006. NORSIG 2006. Proceedings of the 7th Nordic
Conference_Location :
Reykjavik, Iceland
Print_ISBN :
1-4244-0412-6
Electronic_ISBN :
1-4244-0413-4
DOI :
10.1109/NORSIG.2006.275212