color Image Segmentation

Segments a color image into regions.

Description

This program segments a color image into different regions.
The steps followed for segmentation in this program is as follows:

1. The input color image will be coarsely represented using 25 bins.
2. Coarse representation uses the spatial information from a Histogram based windowing process.
3. K-Means is used to cluster the coarse image data.

Those who are new to Matlab Programming can see the "SampleUsage.m" file for the usage of the script "colImgSeg.m".

Those who are already familiar with Matlab Programming can directly use the script "colImgSeg.m".

• Required Products: Image Processing Toolbox
• MATLAB release: MATLAB 6.5 (R13)

[Venkat R]

Hi Athi,
Nice contribution.
When we run the program on same image, different results are coming. It appears there is some bug in your terminating criterion in clustering. Can you fix it.

regards,
ramana

[Venkat R]

 

[Athi]

Dear Ramana Murthy,

The output matrix will be same.
But the coloring may differ. Because of default color usage & K-Means.
Am I answered your question?

[Vignesh]

Its working fine. It helps me to understand color histogram fuzzification. Thanks a lot.

[jichao zhao]

why I have the following error, I do not have Image Processing Toolbox?

??? Undefined function or method 'kmeans' for input arguments of type 'double'.

Error in ==> colImgSeg at 81
fusedMap = kmeans(inImg_1D,nClass, 'EmptyAction', 'singleton');

Error in ==> SampleUsage at 18
outImg = colImgSeg(inImg, nBins, winSize, nClass);

[nanang krisdianto]

hi Athi

when i am running the code,
Why i have notification like this

??? Input argument "inImg" is undefined.

Error in ==> colImgSeg at 24
s = size(inImg);

[Ashok Kumar]

 

[Farie]

Hi, I tried your program but got lot of errors, like not in the loop, unused variables. Can you fix it?

[Theodoros Giannakopoulos]

 

[zhao qiang]

Hi Athi,
Nice contribution.
your program is unstabe ,this is because of the function kmeans,you can try it.
and i want konw what is the meaning of the following statements?

lab = floor(mat(i,j,1)/divis)*(nBins*nBins);
                lab = lab + floor(mat(i,j,2)/divis)*(nBins);
                lab = lab + floor(mat(i,j,3)/divis);
                lab = lab + 1;
                TabLabel(lab) = TabLabel(lab) + 1;
                sum_lab = sum_lab + lab;
i think this is a weighted action?but why?
look for your reply~
regards,
zq

[zhao qiang]

 

[Juan Du]

Hi Athi,

Thank you. This is very useful tool. I also want to segmenting HSI images. But it does not work with this code. This code seems only works on RGB image. Can you help me to solve the problem?

Thanks.
JD

[Biao]

thank you so much! it's useful!

[Biao]

if the illustration algorithm is more specific, this program will be more honorable!

[Saravanan]

Its good,

fusedMap = kmeans(inImg_1D,nClass, 'EmptyAction', 'singleton');

I am working on medical images, where the fusedMap becomes NULL.

Whether its for particular type of images ?

[AMIT]

hi athi
thnx dude
can you plz send me the Literature of this program
it will help me in myproject

thnx
amit

[Thendral]

Hi Athi
When i am running this code i am getting error like this

Error in ==> colImgSeg at 24
s = size(inImg);
Plz help me

[waseem ahmad]

hi athi,
i need to find the center of a colored region if u can help me,plz?

[lbrce]

fff