Passive Optical Data Processing

Devis Tuia*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


This chapter introduces a series of techniques specific to the processing of passive optical images, e.g. multi- and hyperspectral images. The following operations are studied: (1) merging panchromatic images with multispectral images (or pansharpening), (2) extracting indices specific to a given application and (3) extracting two types of products - land use maps and subpixel mixture maps. The chapter explains two families of texture indices: the occurrence indices and the co-occurrence indices. The occurrence indices are calculated directly on the values of the pixels composing the moving window around the pixel considered. Co-occurrence considers the spatial information between pairs of pixels in a given window. Two families of geometrical indices of surfaces are considered: those resulting from mathematical morphology and those based on attribute profiles. The chapter talks about the classification maps and the subpixel mixture maps.

Original languageEnglish
Title of host publicationRemote Sensing Imagery
Number of pages26
ISBN (Electronic)9781118899106
ISBN (Print)9781848215085
Publication statusPublished - 17 Mar 2014
Externally publishedYes


  • Pansharpening
  • Passive optical data processing
  • Passive optical images
  • Spatial indices
  • Spectral indices


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