How to find ht:width ratio of a connected component?

Application: Face detection by skin color I have separated out the connected components in a BW image. All I want to do is find out the ratio of height:width ratio of individual component. The Matlab version I am using is 2010. Please help asap.

Answer 1

[David Young]

Have a look at regionprops. It will give you an aspect ratio for each blob, or the bounding box.

[Sucheta]

Thanks, I will check it out and get back to you.

[Sucheta]

**I am unable to follow. Can you explain me with an example//

**How to upload an image. It will be easy for me to explain.

**Also,

I have this BW image. Black backround and white blob.

I want to find out the centroid of that blob.

After this process I want to find out its y-axis and x-axis distance.