IoU calculation

[rwn17]

Hi, thanks for your excellent work! I have two questions regarding IoU calculation.

(1) The IoU report from the paper is point-based(sparse) or dense mask as in traditional segmentation tasks? From this repo, it seems to be point-based.
(2) Is maxBackgroundRatio used to calculate IoU for the whole sequence? I set maxBackgroundRatio to be 1.5 in EVIMO_wall_seq00 and only 8% of events are used.

Thanks in advance!