It cannot distinguished any thing!?

[lixz123007]

I run it "./MaskFusion -l /home/finch/Downloads/teddy-handover.klg -exportdir ./res -run"
it can 3d reconstruct and output point cloud but it cannot distinguished any thing.The third window is always black.
"MaskRCNN.py.in" files 98lines:
filter_classes = [class_names.index(x) for x in filter_classes]
#filter_classes = ['person', 'skateboard', 'teddy bear']

I tried those two code,they all failed.

BYW,how to use offline_runner.py file?
what is /path/to/rgb/frames ?where can i download ?