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# Auto Gaussian & Gabor fits

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Auto Gaussian & Gabor Surface fit
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Functions to fit a 1D Gaussian to a curve and a 2D Gaussian or Gabor to a surface. The routines are automatic in the sense that they do not require the specification of starting guesses for the model parameters. This is done by evaluating the quality of fit for many different choices of parameters then refining the most promising set of params through least-squares (exhaustive search followed by refinement).

All functions support 2 methods for computing error bars on the parameters: bootstrapping and MCMC.

autoGaussianSurf(xi,yi,zi) fits a 2D Gaussian to a surface, defined as:

zi = a*exp(-((xi-x0).^2/2/sigmax^2 + (yi-y0).^2/2/sigmay^2)) + b

It can also fit a tilted 2d Gaussian or isotropic 2d Gaussian.

autoGaborSurf(xi,yi,zi) fits a Gabor, defined as:

zi = a*exp(-(xip,.^2+yip.^2)/2/sigma^2)*cos(2*pi*xip/lambda + phase) + b

Where:
xip = (xi-x0)*cos(theta) + (yi-i0)*sin(theta);
yip =-(xi-x0)*sin(theta) + (yi-i0)*cos(theta);

The Gabor fit calls autoGaussianSurf internally, using the fact that the absolute value of a Gabor in the Fourier domain is a Gaussian.

autoGaussianCurve(xi,zi) fits a 1D Gaussian to a curve.

Free download from Shareware Connection - Auto Gaussian & Gabor Surface fit

Publisher: Patrick Mineault | License: Shareware
Version: 1.0 | Size: 10 KB | Platform: Matlab, Scripts
Released Date: 26-06-2013 | Rating: 0 | Title: Auto Gaussian & Gabor fits

Author Url: http://www.mathworks.com
Program Info Url: http://www.mathworks.com

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Shareware Connection periodically updates pricing and software information of 'Auto Gaussian & Gabor fits' from company source 'Patrick Mineault' , so some information may be slightly out-of-date. You should confirm all information before relying on it. Software piracy is theft,  Using 'Auto Gaussian & Gabor fits' crack, password, serial numbers, registration codes, key generators is illegal and prevent future development of Auto Gaussian & Gabor fits.

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