Yolo Annotation with polygon ? can or can't ?

[raditharch]

Hello,

I'm trying using this for detection in my datasets but result not quite good because my datasets need precision bbox like polygon. But the example is using rectangle one.

Is someone know format xml annots for polygon? (I was using mrcnn before so I was converting annotation from via to xml)
or is Yolo3 can't using bbox from polygon ?

Thanks for the help.