Rank: 1139 based on 60 downloads (last 30 days) and 5 files submitted
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Edward Brian Welch

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Files Posted by Edward Brian View all
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(last 30 days) 		Comments Rating
25 Nov 2002 ShiftImage Shifts an image using the Fourier shift theorem. Author: Edward Brian Welch shift, approximation, image, interpolation, translate, fourier 12 4
  • 3.5
3.5 | 4 ratings
04 Dec 2001 circonv C = CIRCONV(A,B,N) performs the N-point circular convolution of vectors A and B Author: Edward Brian Welch alias, circular, dsp, convolution, signal processing, general dsp 22 14
  • 3.33333
3.3 | 12 ratings
03 Dec 2001 RotateImage Image rotation performed by 3 separable skews Author: Edward Brian Welch geometric transformat..., image registration, rotate, image, fourier 7 2
  • 3.0
3.0 | 4 ratings
03 Dec 2001 pifft Homodyne reconstruciton of partial MRI k-space (Spatial Frequency) data Author: Edward Brian Welch reconstruction, partial fourier, fft, homodyne, mri 5 0
30 Nov 2001 Screenshot plottable Plot vector or matrix as table with a customizable printing control string. Author: Edward Brian Welch specialized, plotting, table, plot, print, graphics 14 1
  • 5.0
5.0 | 1 rating
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19 Oct 2011 circonv C = CIRCONV(A,B,N) performs the N-point circular convolution of vectors A and B Author: Edward Brian Welch chewkaisheng

how can this related to the 3D sound ??
13 May 2011 RotateImage Image rotation performed by 3 separable skews Author: Edward Brian Welch Jamali, Mohsen
20 Aug 2009 plottable Plot vector or matrix as table with a customizable printing control string. Author: Edward Brian Welch M

Works as advertised! Additionally, h=plottable(x) returns the handle for each axis in the table (each value is plotted in its own axis).
26 Apr 2009 circonv C = CIRCONV(A,B,N) performs the N-point circular convolution of vectors A and B Author: Edward Brian Welch Smith, Trevor Boyd

There is a much cleaner more intuitive implementation located at: http://www.mathworks.com/matlabcentral/fileexchange/13030
14 Mar 2009 RotateImage Image rotation performed by 3 separable skews Author: Edward Brian Welch quantale

It's helpful for principal confirmation.

Hi, Val. Would you try the following change:

mask = conv2(mask,ones(Nx,Ny)/(Nx*Ny),'same');
->
mask = conv2(double(mask),ones(Nx,Ny)/(Nx*Ny),'same');

In my environment(win xp, R200b + IP toolbox), it works well.
Top Tags Applied by Edward Brian
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fourier, image, alias, approximation, circular
Files Tagged by Edward Brian View all
  • 1 - 5 of
  • 5
Updated   File Tags Downloads
(last 30 days) 		Comments Rating
25 Nov 2002 ShiftImage Shifts an image using the Fourier shift theorem. Author: Edward Brian Welch shift, approximation, image, interpolation, translate, fourier 12 4
  • 3.5
3.5 | 4 ratings
04 Dec 2001 circonv C = CIRCONV(A,B,N) performs the N-point circular convolution of vectors A and B Author: Edward Brian Welch alias, circular, dsp, convolution, signal processing, general dsp 22 14
  • 3.33333
3.3 | 12 ratings
03 Dec 2001 RotateImage Image rotation performed by 3 separable skews Author: Edward Brian Welch geometric transformat..., image registration, rotate, image, fourier 7 2
  • 3.0
3.0 | 4 ratings
03 Dec 2001 pifft Homodyne reconstruciton of partial MRI k-space (Spatial Frequency) data Author: Edward Brian Welch reconstruction, partial fourier, fft, homodyne, mri 5 0
30 Nov 2001 Screenshot plottable Plot vector or matrix as table with a customizable printing control string. Author: Edward Brian Welch specialized, plotting, table, plot, print, graphics 14 1
  • 5.0
5.0 | 1 rating

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