Shadow extraction
Karl S. Gudmundsson, Jón Atli Benediktsson, Francis S. Cagatin · Journal of Physics Conference Series · 2008
This paper examines the shadow extraction problem associated with satellite images; namely the fact that images taken at different time include different shadow component. In the present research we attempt to define the shadow component of an image in a controlled lab environment in terms of the phase of the Fourier spectrum of the image, devise a novel method for extracting simple shadow component from the image, and to create a meta-image suitable for change detection post processing. NOTE: A draft version of this article was published in error, the PDF was replaced with the correct version on 2 May 2009. The original PDF can be found in the supplementary data.