How to find variance,entropy,average gradient of an image?

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Aditi
Aditi 2011-5-23
[EDIT: Mon May 23 17:42:16 UTC 2011 - Removed Duplicates - MKF]
[EDIT: 20110523 13:03 CDT - clarify - WDR]
how to find variance, entropy, average gradient of an image?...my image is of class uint8...

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Sean de Wolski
Sean de Wolski 2011-5-23
doc mean
doc var
doc gradient
doc entropy
doc double %convert from uint8

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