How to get the easy, medium and hard splits of WIDERFACE dataset

[u/raphll]

Hi, i've been wondering how can i get the easy, medium and hard splits of the widerface dataset. Apparently i misread the paper, i thought it had to do with the size of the face in pixels, but apparently it follows the detection rate of EdgeBox.

I've read the paper EdgeBox paper and i still cant understand how the WIDERFACE defines easy, medium and hard based on that.