Re: [WM]: informed coding in c

["Jeffrey Bloom" <jbloom@sarnoff.com>]

RandNormal is a placeholder for your favorite function for returning a number randomly drawn from a normal  N(0,1) distribution.
SeedRand is the matching seed function.

I think that your approach of working with sequential 8x8 blocks is OK.

- Jeffrey

At 01:44 AM 3/14/2005, madan mohan wrote:
>Hi,
>
>I'm trying to implement  informed coding and informed embedding using 
>C. I got the source in C of the Digital watermaking book. I am trying 
>to use it but then I got error while execution -------------linker 
>error _RandNormal and also for SeedRand.......... i changed SeedRand to 
>srand( ) but dont know for RandNormal( ). Can any one help me with the 
>process.
>
>And also i am thinking for reading 8x8 block at a time and then process 
>it using the algorithm and run a loop for the entire image.
>Is my idea correct for implementation or the random pattern generated 
>during E_DIRTYPAPER will create a problem during the process of 
>detection.
>
>Thank you,
>with regards,
>Madan mohan.M

=============================
Dr. Jeffrey A Bloom, Sarnoff Corporation, 201 Washington Road, CN 5300, Princeton, NJ 08543-5300 jbloom@sarnoff.com,
http://www.geocities.com/Jeffrey_Bloom, (609) 734-3287,
(609) 734-2662 fax


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