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nutonomy / nuscenes-devkit

The devkit of the nuScenes dataset.
https://www.nuScenes.org
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Missing LIDAR_TOP files #1099

Closed safetylab24 closed 3 months ago

safetylab24 commented 3 months ago

We are trying to load in the nuScenes dataset, but there's always LIDAR_TOP files missing.

For context, we are trying to use CenterPoint for 3D Object detection: Paper.

Here is the exact error message: FileNotFoundError: [Errno 2] No such file or directory: '/home/vrb230004/media/datasets/nuscenes/sweeps/LIDAR_TOP/n015-2018-07-18-11-07-57+0800__LIDAR_TOP__1531883530649557.pcd.bin'

It seems the model is trying to pull data that is listed in the sample_data.json, but it can't find it in the folders. We also tried reinstalling the NuScenes dataset multiple times but we still were not able to fix this issue. Even though this is specific to CenterPoint, has anyone faced this issue before? How did you go about solving it?

whyekit-motional commented 3 months ago

@safetylab24 pls check if the path to your data_root is correct

safetylab24 commented 3 months ago

The issue was actually just that we weren't downloading the LIDAR blobs on nuscenes. We just downloaded the keyframes. Thanks for the help!