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

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Aditi 2011-5-23

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https://ww2.mathworks.cn/matlabcentral/answers/8049-how-to-find-variance-entropy-average-gradient-of-an-image

[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 2011-5-23

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https://ww2.mathworks.cn/matlabcentral/answers/8049-how-to-find-variance-entropy-average-gradient-of-an-image#answer_11051

在 MATLAB Online 中打开

doc mean
doc var
doc gradient
doc entropy
doc double  %convert from uint8

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Aditi 2011-5-23

what does doc stand for

Sean de Wolski 2011-5-23

Documentation. Type each of those lines at the command window and read the ensuing documentation.

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