Reply to thread

Hello,

I've been searching Google for hours now, but I can't find exactly what I need.  I have an image that I'm trying to prepare for a an image detector.  I want to put rectangles around the

objects in the image I want to identify and then I want to turn the rest of the image black.  Every time I use the shape tool, PS creates a new layer, after about eight of them

I merged them all.  I then tried to select the background, but the fill options keep wanting to fill in the rectangles I made and leave the rest of the image untouched.  I tried to

apply a mask, but the only tool that seems to do what I want is the brush, however it is a circle and I need a rectangle. 

Can someone please help me out?

Thank you