Rank: 748 based on 144 downloads (last 30 days) and 10 files submitted
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Gabriele Lombardi

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Università degli Studi di Milano

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Files Posted by Gabriele View all
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24 May 2013 Intrinsic dimensionality estimation techniques Implementation of some state-of-art intrinsic dimensionality estimators. Author: Gabriele Lombardi statistics, intrinsic dimensional..., estimation 14 0
28 Aug 2008 Screenshot GeoML A general morphable template tool for image segmentation. Author: Gabriele Lombardi image analysis, geometry, geometric model, active templates, morphable templates 19 2
01 Apr 2007 FHook A took to simply use hooking techniques and AOP. Author: Gabriele Lombardi development environme..., callback, hooking, hook technique, utilities, development 8 0
20 Sep 2006 MiLi Interpreter of a variation of the LISP language Author: Gabriele Lombardi lisp schema interpret... 13 0
13 Sep 2006 Screenshot Moving Least Squares Tools that implements the Moving Least Squares algorithm to deform points and images Author: Gabriele Lombardi transforms, deformation, image deformation, thinplate, realtime image deform... 24 5
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Comments and Ratings on Gabriele's Files View all
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16 Aug 2013 MUnit: a unit testing framework in Matlab A complete unit testing framework in Matlab Author: Gabriele Lombardi Polcyn, Chris

Great package, but has some issues in newer versions of MATLAB.

03 Aug 2013 ASCII Art variation ASCII art images generator Author: Gabriele Lombardi Huusko, Juha-Matti

Thank you. It works fine for my purposes.

30 Apr 2012 Moving Least Squares Tools that implements the Moving Least Squares algorithm to deform points and images Author: Gabriele Lombardi Xiao, Joe

I am having trouble with the above mentioned problem. Can some one please provide some help on how to solve it? Especially the problem with inverting the computed forward lookup-coordinates?

Thanks!

10 Jan 2012 Parzen PNN A Parzen Probabilistic Neural Network classifier Author: Gabriele Lombardi Prasad, Krishna

Nice, good classifier!!!

16 Jun 2011 Moving Least Squares Tools that implements the Moving Least Squares algorithm to deform points and images Author: Gabriele Lombardi Przem

This implementation is wrong. The inverse-mapping computed in the function MLSD2DWarp is the wrong solution to the problem of backward image interpolation.

The paper of [Schaefer etal. 2006] provides the math for the forward-mapping and it cannot be inverted trivially. One possible solution is to swap the point-sets (p and q) and lose the benefits of the pre-computations, but one can use the fast backward-image-warping for interpolation.

One other solution is to compute the fast forward-mapping as in [Schaefer etal. 2006] and use the slow function "griddata" (or the slightly faster "TriScatteredInterp") instead of "interp2" in order to interpolate the image. In any case, it is not that fast...

Inverting the computed forward lookup-coordinates as done in this code is in any case wrong. You can observe this, if you pull on the handles: one cannot reconstruct the results of the papers. The handles one pulls are not followed by the interpolated image...

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