how do i use kmeans clustering??

im loading a pic onion.png and using function kmeans(x,k) i assigned k=5. now problem is that i cant find what 'x' is and how to use it? never used matlab so dont know how to use the functions

[Walter Roberson]

Please show your code and describe more specifically "still having problem"

[Laila Hayat]

im loading a pic onion.png and using function kmeans(x,k) i assigned k=5. now problem is that i cant find what 'x' is and how to use it? never used matlab so dont know how to use the function

[Walter Roberson]

What aspect of the picture do you wish to cluster on ?

[Laila Hayat]

1. You need to load the image ‘onion.png’ 2. Select K=5 and use Matalb function kmeans to find 5 clusters in the given image (on the basis of color). 3. Assign the colors Red, Green, Blue, Yellow and Black to each of the 5 generated classes. 4. Your result may not necessarily correspond to the actual desirable segmentation of the given image. above is the task that i have to perform

[Laila Hayat]

onion.png is a coloured image

[Daniel Shub]

Please show your work so far.

[Laila Hayat]

a=imread('onion.png'); imshow(a); ab=double(a); cluster=kmeans(ab, 5); finalImage=reshape(cluster ,5); figure, imagesc(finalImage)

[Laila Hayat]

code i wrote till now