This paper examines the shadow extraction problem associated with satellite images; namely the shadow component
of the images. The present research extends our previous work on shadow extraction in simple scenes. Extraction of
multivariable shadows caused by earth's rotation and satellite viewing angle is examined. Attempt is made to define the
variables of such shadow component in a controlled lab environment in terms of the phase of the Fourier spectrum of the
image, device a novel method for extracting complex shadow components from the image, and to create a meta-image
suitable for change detection post processing.
This paper examines the shadow extraction problem associated with satellite images; namely the fact that
images taken at a different time include different shadow components. 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 the simple shadow component from the image, and to create a meta-image
suitable for change detection post processing.
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