Rank: 452 based on 224 downloads (last 30 days) and 7 files submitted
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tudor dima

E-mail
Company/University
Universitat de Valencia
Lat/Long
39.508, -0.42095

Personal Profile:
Professional Interests:
RF system, discrete and integrated circuit design and simulation, Medical Image Analysis, Finite Difference methods for PDE

 

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Files Posted by tudor View all
Updated   File Tags Downloads
(last 30 days)
Comments Rating
19 Feb 2013 Screenshot Image segmentation - multiscale energy-based level sets Segmentation using active contour without edges and multi-scale acceleration. GUI included Author: tudor dima image segmentation, level set, active contours, multiscale, image processing 58 13
  • 5.0
5.0 | 7 ratings
12 Sep 2012 Screenshot input impedance converter : S11, Z, Y (1 complex value) reflection coef. converter: S11 -impedance -admittance -Return Loss -VSWR; graphical & text input Author: tudor dima wireless, sparameters, impedance, admittance, z, y 35 2
  • 5.0
5.0 | 2 ratings
29 May 2012 S-parameter toolbox (+ Z, Y, H, G, ABCD, T) Convert between N-port representations of RF circuits. Read / Write industry-standard files. Author: tudor dima wireless, s parameters, z, y, h, g 92 23
  • 4.94118
4.9 | 17 ratings
30 Apr 2012 Screenshot bmorph - binary morphological transforms Fast binary erosion and dilation, with even faster iterative calls. Author: tudor dima image processing, morphology, erosion, dilation, binary, morphological transfo... 11 3
  • 5.0
5.0 | 1 rating
01 Sep 2011 Screenshot 2D histogram - 'exact' and 'fast' binning, 'crop' and 'stretch' grid adjustment 2D histogram of data pairs [x,y]; 'fast'/'exact' binning; 'stretch'/'crop' grid mode. Author: tudor dima statistics, probability, histogram, 2d, 2 d, box counting 14 2
  • 5.0
5.0 | 2 ratings
Comments and Ratings by tudor View all
Updated File Comments Rating
06 Aug 2013 S-parameter toolbox (+ Z, Y, H, G, ABCD, T) Convert between N-port representations of RF circuits. Read / Write industry-standard files. Author: tudor dima

@padoh
I am not sure I understand the question. The S-parameters are stored as 3D matrices, with the last index spanning the frequency. An N-port at F frequencies will have the size [N N F], that is NxNxF, where N=2 for this 2-port case.

16 Nov 2012 Fifteens Goal is to arrange 15 numbered squares in the 4x4 field. Author: Kirill K. Pankratov

oldies by goldies ... thanks!
And pretty impressive for 10 year-old code, all I had to do in order to make it run in 2010b was to edit line 27 from:
if fnd~=[]
to:
if ~isempty(fnd)

The plastic "perspico" was a huge hit in Romania when I was a kid. Numbers came in two colours (blue/red for odd/even) and on the back it had 6 (or maybe 9?) different output solutions to reach. (the normal 1-15 was called "horizontal", then "vertical", "spiral", "random" (a jumble everyone avoided), "total 30" and "impossible" which was 15:-1:1 , of course unreachable due to its opposite parity.
Thanks, this made my day :-)

16 Nov 2012 Fifteen This is a Graphical User Interface for playing and solving the 15-Puzzle game. Author: Mihir Shah

It doesn't work in R2010b. (v.7.11)

25 Jun 2012 MULTIPLOT2 - Multiplot version for version prior to R2007a (do not use inputParser) 2D-line plots on several axes with common x-axis Author: Thomas Montagnon

Brilliant, thank you!
I've added 'FigNo' as an optional parameter, this way one can keep updating the same window.

25 Jun 2012 Image segmentation - multiscale energy-based level sets Segmentation using active contour without edges and multi-scale acceleration. GUI included Author: tudor dima

@Javier
While drawing the initial contour follow the messages in the command window.

At load time (whether from image or .mat file) keep scale depth at 0 if you want to start at the finest resolution. (I suspect you load a ~72x72 array and have kmax set at 3?)

Will look into adding capability to load an initial contour. What is in there already is the ability to save the level-set function and re-use it. (Say once you have input a complicated initialization, you don't want to go through it every time, so you can save it and load it over. However, the image data has to be of the same size.

Comments and Ratings on tudor's Files View all
Updated File Comment by Comments Rating
29 Jan 2014 S-parameter toolbox (+ Z, Y, H, G, ABCD, T) Convert between N-port representations of RF circuits. Read / Write industry-standard files. Author: tudor dima SOURIA, Charaf Eddine

Very useful

06 Aug 2013 S-parameter toolbox (+ Z, Y, H, G, ABCD, T) Convert between N-port representations of RF circuits. Read / Write industry-standard files. Author: tudor dima dima, tudor

@padoh
I am not sure I understand the question. The S-parameters are stored as 3D matrices, with the last index spanning the frequency. An N-port at F frequencies will have the size [N N F], that is NxNxF, where N=2 for this 2-port case.

30 Jul 2013 S-parameter toolbox (+ Z, Y, H, G, ABCD, T) Convert between N-port representations of RF circuits. Read / Write industry-standard files. Author: tudor dima padoh

what is meant by 2x2xM matrix? how to write it in matlab?

09 Jul 2013 Image segmentation - multiscale energy-based level sets Segmentation using active contour without edges and multi-scale acceleration. GUI included Author: tudor dima Kumar, muthu

25 Jun 2012 Image segmentation - multiscale energy-based level sets Segmentation using active contour without edges and multi-scale acceleration. GUI included Author: tudor dima dima, tudor

@Javier
While drawing the initial contour follow the messages in the command window.

At load time (whether from image or .mat file) keep scale depth at 0 if you want to start at the finest resolution. (I suspect you load a ~72x72 array and have kmax set at 3?)

Will look into adding capability to load an initial contour. What is in there already is the ability to save the level-set function and re-use it. (Say once you have input a complicated initialization, you don't want to go through it every time, so you can save it and load it over. However, the image data has to be of the same size.

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