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TitleIntensity-Hue-Saturation Colour Display Transform for Hyperspectral Data
DownloadDownloads (Preprint)
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorBeauchemin, M; Fung, K B
SourceFourth International Airborne Remote Sensing Conference and Exhibition/21st Canadian symposium on Remote Sensing, Ottawa, Ontario, Canada, 21-24 June; 1999., Open Access logo Open Access
Alt SeriesEarth Sciences Sector, Contribution Series 20042714
Mediapaper; on-line; digital
File formatpdf
Released1999 01 01
AbstractA technique for producing consistent colour composites from hyperspectral data is presented. It is based on the intensity-hue-saturation (HIS) colour transform, a model related to the human perception of colours. The method is simple and robust. The ordinary moment (order zero) of the spectral distribution is assigned to the Intensity component - the perceived luminance. The center of gravity of the distribution is used for the Hue component - the dominant wavelength or colour. Finally, the fraction of the total flux (Intensity) inside a window of a predefined width centered at the Hue (center of gravity) is taken as the Saturation - the purity of the dominant wavelength. A saturation measure derived from variance is also considered, providing a full moment-based IHS transform. Each component is linearly stretched for contrast enhancement and projected to the RGB colour space using the hexcone model. The method is illustrated with a casi (Compact Airborne Spectrographic Imager) image. Further tests are needed to evaluate the potentials of the method for diversified landscapes and different sensor configurations.

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