Software Listing of Author : "Ahmad Poursaberi"
- 2D Gabor Filter
- License: Shareware
- Price:


Recent studies on Mathematical modeling of visual cortical cells [Kulikowski/Marcelja/Bishop:1982] suggest a tuned band pass filter bank structure. These filters are found to have Gaussian transfer functions in the frequency domain. Thus, taking the Inverse Fourier Transform of this transfer function we get a filter characteristics closely resembling to the Gabor filters. The Gabor filter is basically a Gaussian (with variances sx and sy along x and y-axes respectively) modulated by a complex sinusoid (with centre frequencies U and V along x and y-axes respectively). Gabor filters are used mostly in shape detectin and feature extractin in image processing. function [G,gabout] = gaborfilter1(I,Sx,Sy,f,theta); from 'gaborfilter1' with different f(Frequency) and theta(Angle). for example f:0,2,4,8,16,32 theta = 0,pi/3,pi/6,pi/2,3pi/4...
- Publisher: Ahmad Poursaberi
- Date Released: 19-01-2013
- Download Size: 10 KB
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- Platform: Matlab, Scripts
- Walsh Transform(1D)
- License: Freeware
- Price: 0.00


The function implement the 1D Walash Transform which can be used in signal processing,pattern recognition and Genetic algorithms. The Formula of 1D Walsh Transform is defined in mfile
- Publisher: Ahmad Poursaberi
- Date Released: 02-01-2013
- Download Size: 10 KB
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- Platform: Matlab, Scripts
- Walsh Transform(2D)
- License: Freeware
- Price: 0.00


The function implement the 1D Walash Transform which can be used in signal processing,pattern recognition and Genetic algorithms. The Formula of 1D Walsh Transform is defined as : N-1 q-1 ---- -- 1 | | b[i](m)*b[q-1-i](u) W(u) = --- / f(m)| | (-1) ,u = 0,...,N-1 N ---- | | m=0 i=0 where for instance ,A[i] is the ith indices of A
- Publisher: Ahmad Poursaberi
- Date Released: 16-06-2013
- Download Size: 10 KB
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- Platform: Matlab, Scripts