Rank: 701 based on 198 downloads (last 30 days) and 11 files submitted
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Sergei Koptenko

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Company/University
Resonant Medical Corp.

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Files Posted by Sergei View all
Updated   File Tags Downloads
(last 30 days)
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02 May 2007 Fast Kuwahara Filter Fast Kuwahara edge preserving Filter Author: Sergei Koptenko filtering, fast kuwahara edge pr... 15 5
  • 3.5
3.5 | 2 ratings
16 Oct 2006 Screenshot Legendre polynomial Pm(x) Legendre polynomial Pm(x). Author: Sergei Koptenko legendre polynomial, function, construct, variable, x, m 27 6
  • 2.66667
2.7 | 3 ratings
28 Jun 2006 SDGD Edge Detection Filter Second-Derivative-in-the-Gradient-Direction edge detection filter Author: Sergei Koptenko filtering, sdgd edge detection f... 16 3
  • 4.0
4.0 | 1 rating
28 Jun 2006 PLUS Edge Detection Filter PLUS = (Second-Derivative-in-the-Gradient-Direction + Laplacian) edge detection filter Author: Sergei Koptenko filtering, plus sdgd edge detect... 11 0
16 Jun 2006 Contrast Stretch and Normalization Stretches contrast on the image and normalize image from 0 to 1 Author: Sergei Koptenko enhancement, image contrast stretc... 25 1
  • 5.0
5.0 | 1 rating
Comments and Ratings on Sergei's Files View all
Updated File Comment by Comments Rating
14 May 2013 Fast Kuwahara Filter Fast Kuwahara edge preserving Filter Author: Sergei Koptenko Yusef

error in your code
??? Undefined function or method 'array_padd' for input arguments of type 'double'.

Error in ==> KuwaharaFast at 50
[d, indd] = array_padd(image_in, [L,L], 0, 'both', 'replicate');

08 Mar 2012 Contrast Stretch and Normalization Stretches contrast on the image and normalize image from 0 to 1 Author: Sergei Koptenko Farley, Alexander

Worked well for me.

24 Nov 2011 Local min, max, nearest neighbour Find local minima, maxima, match value in vector. Author: Sergei Koptenko L, Q

Thank you so much.

28 Sep 2011 Pad array Pad array or image. Author: Sergei Koptenko roy

How to do this on matlab?
zero pad the face image with a five‚Äźpixel thick rim around the borders of the
image. show the resulting image.
Must be manual codes on script.

20 May 2011 Sound Speed in Sea Water Sound speed in sea water as function of depth, temperature and salinity. Author: Sergei Koptenko Nitin

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