mkdir -p output/vis/scannet/scans
cd output/vis/scannet/scans
# you can also download the scene0000_00.zip manually through
# link: https://caiyun.139.com/m/i?1A5CvaOo7hbTa  password: bLE7
wget https://cvg-data.inf.ethz.ch/nice-slam/vis/scannet/scans/scene0000_00.zip
unzip scene0000_00.zip