Wavelets for urban spatial feature discrimination

Comparisons with fractal, spatial autocorrelation, and spatial co-occurrence approaches

Soe Myint, Nina S N Lam, John M. Tyler

Research output: Contribution to journalArticle

79 Citations (Scopus)

Abstract

Traditional image processing techniques have proven inadequate for urban mapping using high spatial resolution remote-sensing images. This study examined and evaluated wavelet transforms for urban texture analysis and image classification using high spatial resolution ATLAS imagery. For the purpose of comparison and to evaluate the effectiveness of the wavelet approaches, two different fractal approaches (isarithm and triangular prism), spatial autocorrelation (Moran's I and Geary's C), and spatial co-occurrence matrix of the selected urban classes were examined using 65 X 65, 33 X 33, and 17 X 17 samples with a pixel size of 2.5 m. Results from this study suggest that a multi-band and multi-level wavelet approach can be used to drastically increase the classification accuracy. The fractal techniques did not provide satisfactory classification accuracy. Spatial autocorrelation and spatial co-occurrence techniques were found to be relatively effective when compared to the fractal approaches. It can be concluded that the wavelet transform approach is the most accurate of all four approaches.

Original languageEnglish (US)
Pages (from-to)803-812
Number of pages10
JournalPhotogrammetric Engineering and Remote Sensing
Volume70
Issue number7
StatePublished - Jul 2004
Externally publishedYes

Fingerprint

Autocorrelation
Fractals
autocorrelation
wavelet
Wavelet transforms
Image classification
Prisms
Remote sensing
Image processing
spatial resolution
transform
Textures
Pixels
image classification
image processing
comparison
pixel
imagery
texture
remote sensing

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Computers in Earth Sciences

Cite this

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