Fusion of hyperspectral and radar data using the IHS transformation to enhance urban surface features

C. M. Chen*, G. F. Hepner, R. R. Forster

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

112 Citations (Scopus)


The Intensity-Hue-Saturation (IHS) transformation is used to integrate the high spectral resolution, provided by hyperspectral data (Airborne Visible Infrared Imaging Spectrometer, AVIRIS), and the surface texture information, derived from radar data (Topographic Synthetic Aperture Radar, TOPSAR), into a single image of an urban area. This transformed image is superimposed on the Digital Elevation Model (DEM) data derived from TOPSAR data to create a 3D perspective view. The ambiguity of several urban land cover types is resolved to a larger degree using the higher spectral and spatial resolutions and the synergistic visual content provided by the fused image in a 3D perspective. For urban areas that are at risk from geological hazards (e.g., avalanches, mudflows, and debris flows), the fused image provides a cost-effective product, rich in the information necessary for assessment and mitigation of these hazards.

Original languageEnglish
Pages (from-to)19-30
Number of pages12
JournalISPRS Journal of Photogrammetry and Remote Sensing
Issue number1-2
Publication statusPublished - 2003 Jun


  • Hyperspectral
  • IHS transformation
  • Image fusion
  • SAR
  • Urban hazards

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Computer Science Applications
  • Computers in Earth Sciences


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