Adding background as class/label into existing Ground truth labels

Hello,

I am generating ground truth using image labeller app and my images are from CCTV camera to detect different vehicles on the road. I have 4 classes including car,van,pedestrians,bike. I am thinking to substract background from the mentioned classes and define it as a seperate class to improve my accuracy. is there anyway to do it automatically since I have 73 images.

logically like this : background = 1-(car|pedestrians|van|bike).

Then save it all as pixel label data.

I would appreciate the help.

Answer 1

[Rajani Mishra]

You can refer to below link:

https://www.mathworks.com/matlabcentral/answers/155976-how-to-remove-background-from-an-image

Also, you can use try using imsubtract function or use bsxfun function like in these links : https://www.mathworks.com/matlabcentral/answers/17732-remove-background-portion

https://www.mathworks.com/matlabcentral/answers/383192-how-do-i-remove-the-white-background-of-any-image