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From: pasino pasin on 9 Aug 2010 03:36
I have similar problem:
I have a 2D data, xy plane is my pixels and z axis is the values corresponding to each pixel(like an image). and there is more than one peak.
I want to model my z data with Gaussians, how can I fit multi peak Gaussians to my data?
Is there such a package of Matlab or any other way, code etc.?

Thanks a lot


ImageAnalyst <imageanalyst(a)mailinator.com> wrote in message <44188618-68ca-471b-8c5e-2a458c416185(a)q13g2000vbm.googlegroups.com>...
> On Jun 2, 2:39 pm, "Kang Soo Lee" <ks-...(a)kaist.ac.kr> wrote:
> > Hello.
> >
> > I'm new at Matlab.
> > These days, I'm trying to fit several peaks (~30 peaks) into several Gaussians to the whole array in 2D image which has dimension 313*265.
> >
> > However, so far, my code can fit only one peak.
> > Can any one help me to find out the method?
> >
> > With best regard.
>
> ---------------------------------------------------------------
> Maybe you can try the "CLEAN" algorithm - it's used in astronomy to
> find stars in photos of the night sky.
> I think it basically works like this:
> 1. find the brightest peak.
> 2. if no peak is big or bright enough, exit loop
> 3. take neighborhood around the peak and model it to a Gaussian
> 4. write modeled Gaussian to an output image.
> 5. subtract modeled Gaussian from input image.
> 6. repeat steps 1-5
>
> Basically you're adding perfect Gaussians to your output image and
> removing them from your input image (hence the name "clean").
> Good luck,
> ImageAnalyst
From: pasino pasin on 9 Aug 2010 17:02
"Kang Soo Lee" <ks-lee(a)kaist.ac.kr> wrote in message <hu68ga$afo$1(a)fred.mathworks.com>...
> Hello.
>
> I'm new at Matlab.
> These days, I'm trying to fit several peaks (~30 peaks) into several Gaussians to the whole array in 2D image which has dimension 313*265.
>
> However, so far, my code can fit only one peak.
> Can any one help me to find out the method?
>
> With best regard.

I have similar problem. I have a 2D data, xy plane is my pixels and z axis is the values corresponding to each pixel(like an image).
I want to model my z data with Gaussians, how can I fit multi peak Gaussians to my data?
Is there such a package of Matlab or any other way, code etc.? How is your code?
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