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19 Nov 2014 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

thomas

thomas (view profile)

few changes todo in the inputparser, if you have only one parameter it should be included in a cell to success at the parser, but in the main function you treat a single parameter as a matrix ...

4
17 Nov 2014 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

thomas

thomas (view profile)

Thank you for this usefull functions,
i have just 2 "objections" :
- be carefull of iptcheckinput, it will disapear (maybe replace it by validateattribute, and use inputparser matlab object)
- why dont use the standards or graycomatrix (only one direction as output, no cell array, struct for the stats, offset as a direction vector)

5
17 Nov 2014 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

thomas

thomas (view profile)

5
16 Nov 2014 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

Phu Pham Quoc

Dear Xunkai Wei
Thank you a lot for your useful source code. It helps me so much in my programs.
I am just confused that whether it has some mistakes in the calculation of SRE and LRE.
%1. Short Run Emphasis (SRE)
SRE = sum(p_r./(c_vector.^2))/N_runs;
% 2. Long Run Emphasis (LRE)
LRE = sum(p_r.*(c_vector.^2))/N_runs;
I think we should use p_g instead of p_r ?

4
27 May 2014 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

sanu mn

1
18 Dec 2013 Histogram features of a gray level image This function is to calculate histogram features of a gray level image Author: Xunkai Wei

Xunkai Wei (view profile)

Esra

Esra (view profile)

thank you

5
02 Nov 2013 Histogram features of a gray level image This function is to calculate histogram features of a gray level image Author: Xunkai Wei

Xunkai Wei (view profile)

babak eh

The code line for entropy should be changed as the log(Prob) when prob=0 goes to -inf.

to fix this simply change the line to:
Entropy = -sum(Prob.*log(max(Prob,min(Prob(Prob~=0)))));

there are many other ways to fix this.

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04 Jun 2013 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

Narender

Nice

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27 Feb 2013 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

Subha

Subha (view profile)

Can anyone say how to normalize this GLRL matrix....

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20 Feb 2013 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

Subha

Subha (view profile)

yeah we can take the average of features from 4 directions.. and atlast will have 11*1 matrix...

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18 Feb 2013 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

fazli

fazli (view profile)

Now I can run the code. Very simple. Thanks a lot

But I do not really understand, how can we combined all features from different direction. (After extracting the features, we will get 11 features from 4 direction. Is it possible to combine the features from each direction. This means the output will be 11x1 matrix only)

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17 Feb 2013 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

Subha

Subha (view profile)

5
17 Feb 2013 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

Subha

Subha (view profile)

Nice toolbox.. works well.. thank you sir..

i=imread('img.jpg');
I=rgb2gray(RGB);
[GLRLM,SI]= grayrlmatrix(I,'OFFSET',[1;2;3;4],'NumLevels',8,'G',[]);
stats = grayrlprops(GLRLM,{'SRE','LRE','GLN','RLN','RP','LGRE','HGRE','SRLGE','SRHGE','LRLGE','LRHGE'})

....
i've used in this way is this correct????
1. hw to normalize the runlength matrix?? where and hw to add the command ?
...

4
15 Feb 2013 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

fazli

fazli (view profile)

Hi

I am new in matlab and image processing
Where can I start using this code

Hope can help
Tq

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01 May 2012 Histogram features of a gray level image This function is to calculate histogram features of a gray level image Author: Xunkai Wei

Xunkai Wei (view profile)

Mandeep

Can anyone help to explain the input arguments??

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27 Apr 2011 Histogram features of a gray level image This function is to calculate histogram features of a gray level image Author: Xunkai Wei

Xunkai Wei (view profile)

Xufeng Hua

3q

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10 Mar 2011 Histogram features of a gray level image This function is to calculate histogram features of a gray level image Author: Xunkai Wei

Xunkai Wei (view profile)

nurul

nurul (view profile)

Can anyone help me, how I want run this coding??

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29 Jul 2009 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

Nicolas Cusseau

Interesting code !
I was looking for statistics on run length and it's a good starting point.
But you don't mention Stefan Eireiner and use its code even if there are other ways to compute run length which are best for the memory than cell arrays.

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13 Mar 2009 Histogram features of a gray level image This function is to calculate histogram features of a gray level image Author: Xunkai Wei

Xunkai Wei (view profile)

sun peng

sun peng (view profile)

Very helpful!

5
18 Jul 2008 Histogram features of a gray level image This function is to calculate histogram features of a gray level image Author: Xunkai Wei

Xunkai Wei (view profile)

Tetyana Ivanovska

Thank you.

4
12 Jun 2008 Histogram features of a gray level image This function is to calculate histogram features of a gray level image Author: Xunkai Wei

Xunkai Wei (view profile)

Joie __

work good. correctly.

5
22 May 2008 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

Chen-Yi Lee

Good!

5
30 Apr 2008 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

Daniel Jake

Thank you for sharing this excellent code:)

5
19 Mar 2008 Histogram features of a gray level image This function is to calculate histogram features of a gray level image Author: Xunkai Wei

Xunkai Wei (view profile)

pierre cardin

thx

4
26 Feb 2008 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

yue feng

Thx for this great toolbox!

5
03 Feb 2008 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

Anas To'meh

I try to use the package, but it did not work.
matlab msg:
Corrupt P-file "D:\matlab\run-length matrix\Mymatlab\grayrlmatrix.p".

Error in ==> test at 6
GLRLMS = GRAYRLMATRIX(m,'Offset',1,'NumLevels',8,'G',[]);

Please update the package with running grayrlmatrix.p file

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22 Nov 2007 Histogram features of a gray level image This function is to calculate histogram features of a gray level image Author: Xunkai Wei

Xunkai Wei (view profile)

nsm ds

perfect and useful thanx.

5
21 Nov 2007 Histogram features of a gray level image This function is to calculate histogram features of a gray level image Author: Xunkai Wei

Xunkai Wei (view profile)

cos alm

thanks

4
19 Nov 2007 Histogram features of a gray level image This function is to calculate histogram features of a gray level image Author: Xunkai Wei

Xunkai Wei (view profile)

yue feng

Thx

5
12 Nov 2007 Gray Level Run Length Matrix Toolbox The toolbox provide useful functions for extract high order run length features Author: Xunkai Wei

Xunkai Wei (view profile)

xunkai wei

Please mind problems of this version,I have fixed several key bugs. A new version will be issued soon.Please keep an eye on it.

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