Can not see the images:"Voxel Predictions" and "Predicted Point Cloud"

[marong1806]

Envs:

• cuda9.0
• cudnn7.0
• tensorflow1.5

When running demo_dlsm.ipynb and demo_vlsm.ipynb,i can see the images views but not predicted point cloud and cannot see voxel predictions either.

like this:

There is not any errors occur.
Something wrong with image showing or index out of range?