Rank: 30 based on 1325 downloads (last 30 days) and 33 files submitted
photo

Nikolay S.

E-mail
Company/University
http://vision.technion.ac.il/~kolian1/
Lat/Long
32.76499938964844, 35.04999923706055

Personal Profile:

B.Sc in E.E. ( Image&signal processing, computer networks, communication systems),
M.Sc in E.E. - Thesis on "The importance of Phase in Image Processing".

Professional Interests:
Image/Signal processing, Wi-Fi

 

Watch this Author's files

 

Files Posted by Nikolay View all
Updated   File Tags Downloads
(last 30 days)
Comments Rating
08 Jul 2014 List of files from directories/files list or browser Returns cell array of file names, needed by various functions. Author: Nikolay S. dir, utility, data import, path, directories, files 26 2
  • 5.0
5.0 | 1 rating
22 May 2014 Screenshot Local binary patterns Calculates image LBP (Local binary patterns). Author: Nikolay S. lbp, image processing, pattern, local analysis, feature detection, segmentation 244 23
  • 4.11111
4.1 | 9 ratings
11 Feb 2014 Screenshot waitbarTimeRemaining A customized progress bar Author: Nikolay S. progress, waitbar, wait bar, progress bar, time, elapsed time 16 0
27 Jan 2014 Screenshot Image/matrix shift Two of my functions used for registration-matrix shifting as alternative to circshift. Author: Nikolay S. circular shift, interp2, matrix manipulation, shift, registration, image shift 32 0
06 Jan 2014 Inputs Parser made easy Load user inputs into calling environment variables/parameters easily. Author: Nikolay S. parser, inputs, variables 19 0
Comments and Ratings by Nikolay View all
Updated File Comments Rating
09 Jul 2014 List of files from directories/files list or browser Returns cell array of file names, needed by various functions. Author: Nikolay S.

Hi Vaj.
Thanks for the grade and comment. I think the dots cause the problem (fileparts assumes dot separates file name and extension), but I'll try resolving this.
Cheers!

03 Jul 2014 Local binary patterns Calculates image LBP (Local binary patterns). Author: Nikolay S.

Thanks!

02 Jul 2014 Local binary patterns Calculates image LBP (Local binary patterns). Author: Nikolay S.

Hi Paresh.
I'd suggest to send your questions to my email, rather then commenting here.
Regarding your question, you should use more then one histogram element. This is called "feature vector". In some cases you can reduce the feature vector length via PCA, and other methods. In case of LBP it was proven that some histogram elements carry more information than others, such as Rotation Invariant and others. I suggest reading relevant publications.
Best regards.

28 Jun 2014 Local binary patterns Calculates image LBP (Local binary patterns). Author: Nikolay S.

Hi.
Radial filter is uniform to all directions, and in most cases does the trick. Other shape filters can also be handy (especially if the problem in hand has other geometry shape preferences), but radial shape is the one commonly used in published papers.
Hope this will help a bit

28 Jun 2014 Local binary patterns Calculates image LBP (Local binary patterns). Author: Nikolay S.

Hi Paresh.
The multiplication is needed for proper weighting of the radial filter elements. In many cases the filter element is between pixels, and therefore a an averaging ought to be done.
Best regards.

Comments and Ratings on Nikolay's Files View all
Updated File Comment by Comments Rating
09 Jul 2014 List of files from directories/files list or browser Returns cell array of file names, needed by various functions. Author: Nikolay S. S., Nikolay

Hi Vaj.
Thanks for the grade and comment. I think the dots cause the problem (fileparts assumes dot separates file name and extension), but I'll try resolving this.
Cheers!

08 Jul 2014 List of files from directories/files list or browser Returns cell array of file names, needed by various functions. Author: Nikolay S. Vaj

I have noticed that there are troubles with folders named like dates. For example folder named 9.8.2014 will not be on the list.
Otherwise great code. Thank you.

03 Jul 2014 Local binary patterns Calculates image LBP (Local binary patterns). Author: Nikolay S. S., Nikolay

Thanks!

03 Jul 2014 Local binary patterns Calculates image LBP (Local binary patterns). Author: Nikolay S. slimane

Hi Mr .Nikolay ,
This is a very good work
thanks

02 Jul 2014 Local binary patterns Calculates image LBP (Local binary patterns). Author: Nikolay S. S., Nikolay

Hi Paresh.
I'd suggest to send your questions to my email, rather then commenting here.
Regarding your question, you should use more then one histogram element. This is called "feature vector". In some cases you can reduce the feature vector length via PCA, and other methods. In case of LBP it was proven that some histogram elements carry more information than others, such as Rotation Invariant and others. I suggest reading relevant publications.
Best regards.

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