Rank: 1503 based on 71 downloads (last 30 days) and 2 files submitted
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Javier Montoya

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http://www.lis.ic.unicamp.br/~jmontoya

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Files Posted by Javier View all
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(last 30 days)
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27 Aug 2007 Screenshot Polar Coordinates Transform Polar Coordinates Transform Author: Javier Montoya polar coordinates, polar coordinate syst..., cartesian, coordinates, ut 41 11
  • 4.55556
4.6 | 10 ratings
02 Apr 2007 Screenshot Contrast Enhancement Utilities (Image Equalization, PDF, CDF) Histogram Processing Author: Javier Montoya enhancement, image equalization, image histogram, cumulative distributi... 30 11
  • 4.1
4.1 | 10 ratings
Comments and Ratings by Javier View all
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21 Aug 2014 vol3d v2 3-d volume (voxel) rendering Author: Oliver Woodford

Hi Oliver, nice visualization tool! Was wondering which is the best way to add labels on the axes? By using xlabel/ylabel/zlabel, the labels aren't displayed, especially if one rotates the 3d volume.

05 Feb 2014 SC - powerful image rendering Useful tool for rendering and outputting information rich images Author: Oliver Woodford

Hi Oliver, great work! I was wondering if you could give some examples on how to overlay likelihoods (MxMx1) into an RGB image (MxMx3). I tried something like: sc(img,cat(3,likelihood_img,likelihood_img,likelihood_img));
But didn't work out. Ideally, the output should look something like in the top-right figure of your webpage (Eli's example using `prob` and `probjet`): http://www.robots.ox.ac.uk/~ojw/software.htm
Thank you!

19 Feb 2013 K shortest paths in a graph represented by a sparse matrix (Yen's algorithm) Determine the K shortest paths from node S to node T. Author: El-ad David Amir

@El-ad David Amir, I guess, that you're considering the sG sparse graph as being undirected (symmetric), right?
In case of directed graph, then following line should not be used, right
=> k_G( j_next_node, i_node ) = 0; ?

19 Feb 2013 K shortest paths in a graph represented by a sparse matrix (Yen's algorithm) Determine the K shortest paths from node S to node T. Author: El-ad David Amir

@El-ad David Amir, By symmetric graphs I was referring to undirected graphs ;-)

Comments and Ratings on Javier's Files View all
Updated File Comment by Comments Rating
10 Jun 2013 Polar Coordinates Transform Polar Coordinates Transform Author: Javier Montoya Coppola, Claudio

it's fantastic you've saved my Day!

i've modified a little the code to allow me to put a Center of coordinates, but it' has been very easy.
I Really thank you! :D

13 Nov 2012 Polar Coordinates Transform Polar Coordinates Transform Author: Javier Montoya Arkadi

excellent.

17 Jul 2012 Contrast Enhancement Utilities (Image Equalization, PDF, CDF) Histogram Processing Author: Javier Montoya S., Nikolay

04 Jul 2012 Contrast Enhancement Utilities (Image Equalization, PDF, CDF) Histogram Processing Author: Javier Montoya Varakorn

thx

04 Apr 2012 Polar Coordinates Transform Polar Coordinates Transform Author: Javier Montoya Boris

There is an issue regarding the sampling with this approach. Since the code simply samples the closest value the result is heavily undersampled in some regions (r>>), while it is oversampled in others (r<<).
It would be interesting to have a correct approach that satisfies signal processing criteria (e.g. smooth oversampled regions and grey values where undersampled black and white values come together.

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