Rank: 481 based on 294 downloads (last 30 days) and 7 files submitted
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tudor dima

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Universitat de Valencia
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39.508, -0.42095

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Files Posted by tudor dima View all
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(last 30 days)
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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 54 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 37 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 123 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... 31 5
  • 4.5
4.5 | 2 ratings
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 20 2
  • 5.0
5.0 | 2 ratings
Comments and Ratings by tudor dima View all
Updated File Comments Rating
29 Oct 2014 bmorph - binary morphological transforms Fast binary erosion and dilation, with even faster iterative calls. Author: tudor dima

@Hassan
Different results are obtained when different strels are used. Incidentally, this is exactly why this box was built, for the "circular" strel in matlab is actually octagonal. It is stated in the first paragraph of the description.

As for the difference between the matlab dilation/erosion operations and this implementation you could try reading the included .pdf file.

No, I have no suggestions on grayscale morphology.

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.

Comments and Ratings on tudor dima's Files View all
Updated File Comment by Comments Rating
29 Oct 2014 bmorph - binary morphological transforms Fast binary erosion and dilation, with even faster iterative calls. Author: tudor dima tudor dima

@Hassan
Different results are obtained when different strels are used. Incidentally, this is exactly why this box was built, for the "circular" strel in matlab is actually octagonal. It is stated in the first paragraph of the description.

As for the difference between the matlab dilation/erosion operations and this implementation you could try reading the included .pdf file.

No, I have no suggestions on grayscale morphology.

23 Oct 2014 bmorph - binary morphological transforms Fast binary erosion and dilation, with even faster iterative calls. Author: tudor dima Hassan Naseri

Thanks for the really fast code.
However, I do not get the expected results as the original imdilate. Would you please tell the difference between the standard dilation/erosion operations and your implementation in terms of functionality?
Another question is that, do you have a speed-up suggestion for grayscale morphology?

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 Charaf Eddine SOURIA

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 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.

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?

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