Evaluation of neural pattern classifiers for a remote sensing application

Manfred M. Fischer, Sucharita Gopal*, Petra Staufer, Klaus Steinnocher

*Corresponding author for this work

Publication: Scientific journalJournal articlepeer-review

Abstract

This paper evaluates the classification accuracy of three neural network classifiers on a satellite image-based pattern classification problem. The neural network classifiers used include two types of the Multi-Layer-Perceptron (MLP) and the Radial Basis Function Network. A normal (conventional) classifier is used as a benchmark to evaluate the performance of neural network classifiers. The satellite image consists of 2,460 pixels selected from a section (270 × 360) of a Landsat-5 TM scene from the city of Vienna and its northern surroundings. In addition to evaluation of classification accuracy, the neural classifiers are analysed for generalization capability and stability of results. Best overall results (in terms of accuracy and convergence time) are provided by the MLP-1 classifier with weight elimination. It has a small number of parameters and requires no problem-specific system of initial weight values. Its in-sample classification error is 7.87% and its out-of-sample classification error is 10.24% for the problem at hand. Four classes of simulations serve to illustrate the properties of theclassifier in general and the stability of the result with respect to control parameters, and on the training time, the gradient descent control term, initial parameter conditions, and different training and testing sets.

Original languageEnglish
Pages (from-to)195-223
Number of pages29
JournalGeographical Systems
Volume4
Issue number2
Publication statusPublished - 1997

Keywords

  • Back propagation
  • Classification of multispectral image data
  • Neural classifiers
  • Pixel-by-pixel classification
  • Sensitivity analysis

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