How to prepare the DAIR-V2X data for training?

[linleyzoe]

Hi, thanks for your inspiring work!

There seems no instructions for converting the raw DAIR-V2X to the specific training format, which is referred as root_dir: "/GPFS/rhome/quanhaoli/workspace/dataset/my_dair_v2x/v2x_c/cooperative-vehicle-infrastructure/train.json" in the config file.

Any advice would be greatly appreciated!

[goodgamemaker]

Do you know how to do with it? I also have some questions！

[suuhou]

hello, you can find split_data.json files(train.json, val.json) in this zip file https://github.com/yifanlu0227/CoAlign.

Actually, you can also find it on the official github page of dair-v2x.
https://github.com/AIR-THU/DAIR-V2X/blob/main/data/split_datas/cooperative-split-data.json
In this case, you can use the following code to see how they split the dataset into training and validation sets:

info_json_path = r"E:\python_work_d\project_samples\DAIR-V2X-main\data\split_datas"
info_name = "cooperative-split-data.json"
with open(os.path.join(info_json_path, info_name), 'rb') as f:
    split_data = json.load(f)
split_info = split_data["cooperative_split"]["train"]
for i in range(10):
    print(split_info[i])

Then, to prepare the dataset for model training, following these steps:

1. Download the dair-v2x(cooperative-vehicle-infrastructure )dataset and the new annotation data as mentioned in the github homepage of where2comm
2. Organize your dataset file into the following structure: https://github.com/AIR-THU/DAIR-V2X/tree/main/data
3. Replace the lidar annotation data of the collaborative and the vehicle side with the new annotation data downloaded in step 1. (you will also find the train.json file and the val.json file in this zip )
4. Change data path in the yaml file to your own path (data_dir, root_dir...)

[CatOneTwo]

Can you run this program normally?

[suuhou]

yes，can't u?

[CatOneTwo]

yes, I can run the code now. But how to set communication volume like papers?

[goodgamemaker]

yes, I can run the code now. But how to set communication volume like papers?
Have you solved this problem? Do you use image in the code or only use point cloud？Thank you!

[goodgamemaker]

And how does his communication round K reflect

[W-E-A]

Google Drive Share Link from CoAlign: https://drive.google.com/file/d/13g3APNeHBVjPcF-nTuUoNOSGyTzdfnUK/view?usp=sharing