from an image having multiple rectangles some rectangles are filled with lines an some are empty like given below in the image.i need to remove all the rectangles which are empty.Any suggestions?

edit

and your code ? show what you have (so far), please.

new to OpenCV ? no idea how to start

in other words:

• what you have: nada
• what you ask for: other folks solve your problem

(it does not work this way, sorry to say so.)

got it, thank you :)