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Subject: Re: Guestion need Implement and answer?
Date: Thu, 25 Sep 2008 07:13:01 +0000 (UTC)
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"ABUTALA " <love.scream1@gmail.com> wrote in message <gbf83q$qhl$1@fred.mathworks.com>...
> Implement the spread-spectrum watermarking.
>  Your program should embed 16 bits of &#8216;intelligence information&#8217; in an image of arbitrary size.
>  The detector should be able to detect 100% of the embedded bits.
>  The report should address the following questions
> a. How does the spreading of message bits occur?
> b. What is the difference between the blind embedding and non-blind embedding?
> c. Why do you need the prefiltering step in blind detection?
> d. Why do you think the whole process work?
> 
> 2. For the above code, 
> tweak the gain/strength parameters to come up with a graphical relation 
> between perceptibility and detectability of the watermarked image.
>  You may use PSNR metric for perceptability and bit error rate for the detectability.


Hopefully for you there is a KFC, MC or BK nearby ...