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From: fano@lifia.UUCP
Newsgroups: comp.graphics
Subject: noise in images..
Message-ID: <1029@lifia.UUCP>
Date: Thu, 20-Nov-86 19:21:15 EST
Article-I.D.: lifia.1029
Posted: Thu Nov 20 19:21:15 1986
Date-Received: Sat, 22-Nov-86 06:46:21 EST
Reply-To: fano@lifia.UUCP (Rampa*)
Organization: LIFIA-IMAG, Un. of Grenoble, France
Lines: 30




I intend to add, artificially a gaussian noise to a digitized image.

The process I presently have in mind is the following one:	
	1- calculation of the mean value of the image intensity
	2- generate a random number, with a gaussian distribution 
	   (mean value = 0.0, standard deviation = percentage of the 
	    mean value)
	3- add the random number to the value of each pixel of the
	   initial image.

What do you think of that method? Any suggestion and remark are welcome!
I will send a summary of eventual responses, upon request.

please e-mail responses to following address.

thanks,

-- 


    fano rampa*
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                           "Carmen lips are more exciting than Common lisp..."
                                                         -G.Bizet-

fano@lifia.UUCP      or     mcvax!lifia!fano