how i can put a rectangular around forground ?

in regionprob, bounding box put a rectangular a round each object but i need just one rectangular around my forground which is in the center of my image .i mean i need a perim around my object that have rectangular form.

[Walter Roberson]

How can you determine which is foreground and which is background?

[mari ahmad]

It's clear. I have an image that consists of 2 objects. If I use regionnprops boundingbox the result is a lot of rectangles around each of the two objects. In fact i need to extract the area of jut 2 object and put a rectangle around it.

Answer 1

[Image Analyst]

Call bwconvhull() before you call bwlabel() or bwconncomp(). That will join the two blobs and create just one giant blob, which, of course, will have just one bounding box.

binaryImage = bwconvhull(binaryImage);
labeledImage = bwlabel(binaryImage);
measurements = regionprops(labeledImage, 'BoundingBox');
boundingBox = measurements.BoundingBox;

[mari ahmad]

Dear Image Analyst thank you very very much. it work very well