demoVideo labeled images

[ccyy]

Hi, I generated labeled images (..._gtFine_labelIds.png) from demoVideo files (stuttgart_00, 01, and 02 folders). However, the bordering pixels are missing in my results. How can I add these pixels?

The bordering pixels have a common value (0,0,0). They need to be neglected in training (train_id = 255). For instance, the car's front and the Mercedes logo need to be neglected.

I can do this manually (*) but is there any source available to do this already?

Thank you

(*) First, I need to identify those pixels and then assign (0,0,0) to them.