How to select an object of a bw image

I have a bw image with two blobs. I want to calculate area centroid etc. Of each individually....how can i achieve this??!

Answer 1

[Image Analyst]

With regionprops():

labeledImage = bwlabel(binaryImage);
measurements = regionprops(labeledImage, 'Area');
allAreas = [measurements.Area]

See my Image Segmentation Tutorial for a full demo: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862