Empty lanes

[Timer-x]

I find many frames with empty lane when i try to obtain map data from B2D_vad_dataset.py. I don't know if there is something wrong when i prepare the b2d dataset.

[zhiyuanzzz]

Please provide more details so we can find the problem.

[Timer-x]

this error occurred because there is no lane

[Timer-x]

I download map data from baidu cloud, and process all the data using (https://github.com/Thinklab-SJTU/Bench2DriveZoo/blob/a630480bdc0222382c41dd80115f690bbdb58505/mmcv/datasets/prepare_B2D.py#L400).

[zhiyuanzzz]

get_map_info in B2D_vad_dataset.py obtains lanes within a certain range of the ego vehicle, so please ensure that you are using the correct ego position and config. If you want to train VAD on Bench2Drive, it is recommended to use the VAD model in our repo ( https://github.com/Thinklab-SJTU/Bench2DriveZoo/tree/uniad/vad ) and follow the documents to prepare data and train model.

[Timer-x]

I use your official code. https://github.com/Thinklab-SJTU/Bench2DriveZoo/blob/a630480bdc0222382c41dd80115f690bbdb58505/mmcv/datasets/B2D_vad_dataset.py#L299
and add print(gt_bboxes.fixed_num_sampled_points) to check the data but failed. Can you double check it again. Thanks a lot.

[ChipsICU]

I use your official code. https://github.com/Thinklab-SJTU/Bench2DriveZoo/blob/a630480bdc0222382c41dd80115f690bbdb58505/mmcv/datasets/B2D_vad_dataset.py#L299 and add print(gt_bboxes.fixed_num_sampled_points) to check the data but failed. Can you double check it again. Thanks a lot.

@Timer-x maybe you can check this issue, #62

[Timer-x]

I use your official code. https://github.com/Thinklab-SJTU/Bench2DriveZoo/blob/a630480bdc0222382c41dd80115f690bbdb58505/mmcv/datasets/B2D_vad_dataset.py#L299 and add print(gt_bboxes.fixed_num_sampled_points) to check the data but failed. Can you double check it again. Thanks a lot.

@Timer-x maybe you can check this issue, #62

Thank you, but I find this problem in open loop training. Have you attempt to visualize the map data when you train the vad?