Path: news.mathworks.com!not-for-mail
From: "ABUTALA " <love.scream1@gmail.com>
Newsgroups: comp.soft-sys.matlab
Subject: Re: I need to help?
Date: Fri, 19 Sep 2008 18:51:02 +0000 (UTC)
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ImageAnalyst <imageanalyst@mailinator.com> wrote in message <5e356f60-dbfd-46b3-9034-0e72a4a0e71e@x35g2000hsb.googlegroups.com>...
> On Sep 19, 1:04=A0pm, "ABUTALA " <love.scre...@gmail.com> wrote:
> > > "love":
> > > I didn't need to run it - I can tell just from reading the code.
> > > Basically it blends two images together and asks you to give a
> > > subjective rating on the "robustness" (whatever that is) of the
> > > watermark. =A0You'd need to define "robustness" better and then, after
> > > you've plotted robustness vs. blending percentage, make some kind of
> > > subjective call about which blending factor is "best." =A0This is a ver=
> y
> > > simple to construct and very visible type of watermark. =A0It's not
> > > really steganography because it's not hidden. =A0There are so many ways
> > > to hide one image in another that can't be detected as easily as your
> > > method and can only be found with knowledge of how it was
> > > constructed. =A0You could think up your own with a little thought, but
> > > this blending method is not a very effective one.
> > > You're welcome.
> > > Did I win?
> > > Regards,
> > > ImageAnalyst
> >
> > Thank ImageAnalyst
> >
> > I want to know the quality between images by PSNR(A,B)?
> >
> > THANKS- Hide quoted text -
> >
> > - Show quoted text -
> 
> ------------------------------------------------------------------------
> ABUTALA:
> MATLAB has a defnition of PSNR at
> http://www.mathworks.com/access/helpdesk/help/toolbox/vipblks/ref/psnr.html
> So you're going to plot psnr vs. human_visual_grade?
> By the way, is this related to love's question or is this some
> completely separate question?  How are you related to love?
> Regards,
> ImageAnalyst

thank you

i did but i need to run program and i see thr result?

love-- it is nickname only