Skip to main content
Article
Reduced-Dimension Clustering for Vegetation Segmentation
Transactions of the ASAE
  • Brian L. Steward, Iowa State University
  • Lei F. Tian, University of Illinois at Urbana-Champaign
  • Daniel S. Nettleton, Iowa State University
  • Lie Tang, Wageningen Agricultural University
Document Type
Article
Publication Version
Published Version
Publication Date
1-1-2004
Abstract
Segmentation of vegetation is a critical step in using machine vision for field automation tasks. A new method called reduced-dimension clustering (RDC) was developed based on theoretical considerations about the color distribution of field images. RDC performed unsupervised classification of pixels in field images into vegetation and background classes. Bayes classifiers were then trained and used for vegetation segmentation. The performance of the classifiers trained using the RDC method was compared with that of other segmentation methods. The RDC method produced segmentation performance that was consistently high, with average segmentation success rates of 89.6% and 91.9% across both cloudy and sunny lighting conditions, respectively. Statistical analyses of segmentation performance coupled with three-dimensional visualization of classifier decision surfaces produced insight into why classifier performance varied across the methods. These results should lead to improvements in segmentation methods for field images acquired under variable lighting conditions.
Comments

This article is from Transactions of the ASAE, 47, no. 2 (2004): 609–616.

Copyright Owner
American Society of Agricultural and Biological Engineers
Language
en
File Format
application/pdf
Citation Information
Brian L. Steward, Lei F. Tian, Daniel S. Nettleton and Lie Tang. "Reduced-Dimension Clustering for Vegetation Segmentation" Transactions of the ASAE Vol. 47 Iss. 2 (2004) p. 609 - 616
Available at: http://works.bepress.com/lie_tang/6/