Problem using visualize.py

[Shiyao-Xu]

Dear Team,

thank you for your work! I'm currently using this api for occupancy prediction task, and now facing with one fatal question. When I tried to launch visualize.py file, I got this output in terminal:

`********************************************************************************
INTERFACE:
Dataset ../semantic_KITTI/kitti/
Config config/semantic-kitti.yaml
Sequence 00
Predictions None
ignore_semantics False
do_instances False
ignore_images False
link False
ignore_safety False
color_learning_map False
offset 0

---

Opening config file config/semantic-kitti.yaml
Sequence folder ../semantic_KITTI/kitti/sequences/00/velodyne exists! Using sequence from ../semantic_KITTI/kitti/sequences/00/velodyne
Labels folder ../semantic_KITTI/kitti/sequences/00/labels exists! Using labels from ../semantic_KITTI/kitti/sequences/00/labels
Using semantics in visualizer
To navigate:
b: back (previous scan)
n: next (next scan)
q: quit (exit program)
/media/varda/Dolphin/miniconda3/lib/python3.12/site-packages/vispy/gloo/texture.py:364: UserWarning: GPUs can't support dtypes bigger than 32-bit, but got 'float64'. Precision will be lost due to downcasting to 32-bit.
data = downcast_to_32bit_if_needed(data, copy=copy)`

No ERROR occurred, but no vis window either...

Could you please help me with this problem? Is it because my GPU performance is too low(1080Ti)?

Best,
Shiyao

[jbehley]

thanks for your interest in our work: I suspect that it has nothing to do with the GPU as it's only visualizing the point clouds; but I haven't checked in a while if the code still works with newer python packages. I guess that the error message from vispy has something to do with this. It might be that you have to use an earlier vispy version?

I have to look into this, but I will only possibly have time to look into this at earliest next week.

[chadrs2]

I got the exact same error.

[PZran]

I got the exact same error. How can i solve it?

[IKAROS66]

I encountered the same problem and solved it by downloading PyOpenGL and pyqt libraries in the conda virtual environment. I suspect that System dependencies were not correctly applied to the virtual environment.

[jbehley]

okay with an old version, it works?