Rank: 150 based on 462 downloads (last 30 days) and 9 files submitted
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Jered Wells

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Company/University
Duke University
Lat/Long
36.00918579101562, -78.94168090820312

Personal Profile:

Medical Physics PhD Graduate Student studying x-ray imaging with a focus in noise/dose reduction and algorithm development.

Professional Interests:
Medical imaging, image processing

 

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Files Posted by Jered View all
Updated   File Tags Downloads
(last 30 days)
Comments Rating
10 Apr 2014 dicomLUT DICOMLUT applies an embedded lookup table to a DICOM image Author: Jered Wells dicom, imaging, lut, lookup table, invert, image 8 0
08 May 2013 Center of Mass CENTEROFMASS finds the center of mass of the N-dimensional input array Author: Jered Wells physics, center of mass 69 1
  • 5.0
5.0 | 2 ratings
03 May 2013 Screenshot Point cloud normal vector NORMND computes the vector normal to points in an N-D point cloud Author: Jered Wells eigenvector, eigenvalue, normal, vector, point cloud 38 0
24 Apr 2013 Norton-Beer apodization filter NORTONBEER produces a one-dimensional Norton-Beer apodization filter Author: Jered Wells apodization, filter 11 0
17 Apr 2012 Screenshot Lorentzian fit LORENTZFIT fits a single- or multi-parameter Lorentzian function to data Author: Jered Wells lorentz, lorentzian, fit, fitting, nonlinear 93 4
  • 4.0
4.0 | 1 rating
Comments and Ratings by Jered View all
Updated File Comments Rating
21 Aug 2014 Remove outliers Turns outliers from a vector or matrix to NaN based on modified Thompson Tau method Author: M Sohrabinia

There are several errors in the code which assume the data have zero mean (an assumption which cannot be consistently held through algorithm operation). Could be greatly improved. Until then, users should be very critical of algorithm outputs.

26 Jun 2013 Bias Field Corrected Fuzzy C-Means Estimates the illumination artifact in 2D (color) and 3D CT and MRI and segments into classes. Author: Dirk-Jan Kroon

Update: I recently updated my machine, and after recompiling BCFCM3D, it appears to be working fine. I do, however, think the code would benefit from some free(*) statements within the mallocf and mallocd subfunctions. Although I am not a C-professional, I am pretty sure that this poses a significant memory leak that quickly becomes problematic when dealing with large volumes.

24 Jun 2013 Bias Field Corrected Fuzzy C-Means Estimates the illumination artifact in 2D (color) and 3D CT and MRI and segments into classes. Author: Dirk-Jan Kroon

Hi. I have been having memory issues with this code. I have been segmenting large volumes (512x512x512) so I have been monitoring my RAM consumption using Windows task manager. When running the program, it slowly but steadily consumes more RAM up until about 7GB (out of 16GB). This takes only about 2 min, but then the program runs for about 10 min and finally crashes with an "Out of Memory" error when more memory clearly exists. What's worse is that MATLAB holds onto this ~6GB chunk of memory, and no manner of memory clearing or packing gets it back. I am not a mex expert, so maybe you could shed some light on this issue? Thanks in advance.

10 May 2013 Stem and leaf plot This is a simple utility for making stem and leaf plots output to the command window. Author: Jered Wells

farfan: ROUNDN is a default MATLAB function. I'm not sure when it was released, but perhaps your version of MATLAB is older than R2008b? Check out the MATLAB documentation for more details: http://www.mathworks.com/help/map/ref/roundn.html

10 May 2013 R-square: The coefficient of determination RSQUARE is a simple routine for computing R-square (coefficient of determination). Author: Jered Wells

Oliver: Sorry for the late reply. In the case of linear regression (when an intercept or constant term is included in the model), my RSQUARE function and the square of MATLAB's CORR will produce the same result. However, RSQUARE provides the option of computing the R-square statistic using an alternate method which prevents negative R-square values which can occur when no constant term is included in the fit model. Please reference John D'Errico's comment below for more details.

Also, for convenience, my function produces the RMSE of the fit to the data.

Comments and Ratings on Jered 's Files View all
Updated File Comment by Comments Rating
16 Sep 2014 R-square: The coefficient of determination RSQUARE is a simple routine for computing R-square (coefficient of determination). Author: Jered Wells Alejandro

does what it says

02 Jun 2014 Stem and leaf plot This is a simple utility for making stem and leaf plots output to the command window. Author: Jered Wells Guevara, Edgar

@Jered: ROUNDN is not a default function. It is part of the Mapping toolbox, I think if that constraint is specified on your file description, it would improve the quality of this submission.

23 May 2014 Center of Mass CENTEROFMASS finds the center of mass of the N-dimensional input array Author: Jered Wells Kahye

19 Jan 2014 Center of Mass CENTEROFMASS finds the center of mass of the N-dimensional input array Author: Jered Wells Veis, Lena

You save me a lot of time...
Thank you very much :)

10 May 2013 Stem and leaf plot This is a simple utility for making stem and leaf plots output to the command window. Author: Jered Wells Wells, Jered

farfan: ROUNDN is a default MATLAB function. I'm not sure when it was released, but perhaps your version of MATLAB is older than R2008b? Check out the MATLAB documentation for more details: http://www.mathworks.com/help/map/ref/roundn.html

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