how to detect a watermark

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Youssra on 12 Jun 2015

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https://ch.mathworks.com/matlabcentral/answers/223585-how-to-detect-a-watermark

Reopened: Youssra on 13 Jun 2015

Hello,

How do we know if an image is watermarked? Is there any function helps us to detect a waetermak before extracting it?

Thank you

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Walter Roberson on 12 Jun 2015

duplicates http://uk.mathworks.com/matlabcentral/answers/223583-how-to-detect-a-watermark

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