How to sement a grayscale image into 8 halves?

i've a grayscale image and i want to segment it in 8 parts then find the distance between those segments and then coorelate them kindly help me with matlab commands,any help is highly appreciated.

[Nitin]

It would be helpful if you could post an image, there are different types ways to segment an image. One would be to use Canny and get the binary image

Answer 1

[Image Analyst]

See my image segmentation tutorial where I find centroids: http://www.mathworks.com/matlabcentral/fileexchange/25157-image-segmentation-tutorial-blobsdemo. From there it's easy to use the Pythagorean theorem to find the distance between all the centroids.