Can anyone provide me with some clustering examples?
The second is what clustering is: group objects that are somewhat similar (and that could be images). Clustering is not a pure imaging technique.
When processing a single image, it can for example be applied to colors. This is a quite good approach for reducing the number of colors in an image. If you cluster by colors and pixel coordinates, you can also use it for image segmentation, as it will group pixels that have a similar color and are close to each other. But this is an application domain of clustering, not pure clustering.
I am having a hard time understanding what scipy.cluster.vq really does!!  
On Wikipedia it says Clustering can be used to divide a digital image into distinct regions for border detection or object recognition.
on other sites and books it says we can use clustering methods for clustering images for finding groups of similar images.
AS i am interested in image processing ,I really need to fully understand what clustering is .
So
Can anyone show me simple examples about using scipy.cluster.vq with images??