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Detecting Shadow and Reflection of objects in image

Hello Experts!
I want some suggestions to "Detecting Shadows and reflections" in images. The image is taken from a satellite. It's single band and the DN numbers are not available. We are to deal with the grayvalues only.
Thanks in advance
Manirup Sinha
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manirup
Asked:
manirup
1 Solution
 
gj62Commented:
This is really a remote sensing question (something I haven't done in about 20 years).  Here's a brief article on shadows and remote sensing - perhaps the bibliography will help...

http://pcms.met.fu-berlin.de/publications/kopenh97.pdf
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grg99Commented:
Do you have any height information or stereoscopic views from which you could determine height?

Given height info, and angle and size of specular and diffuse illumination info or guesses thereof, you could predict the approximate areas that might be partially or totally shadowed, that would give you a good hint what areas to concentrate your edge-tracing on.

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manirupAuthor Commented:
Sorry grg99. As i mentioned, the image is 2D and no elevation or height information is available. If it would have been present then there would not have been much problem. Anyway, thanks for your suggestion.
Manirup
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urs_rahulCommented:
withdraw this question. None is helping.
Rahul
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