nuscenes Full version of data preparation

[zhu2900000]

Prerequisite

• I have searched Issues and Discussions but cannot get the expected help.
• I have read the FAQ documentation but cannot get the expected help.
• The bug has not been fixed in the latest version (dev-1.x) or latest version (dev-1.0).

Task

I'm using the official example scripts/configs for the officially supported tasks/models/datasets.

Branch

main branch https://github.com/open-mmlab/mmdetection3d

Environment

In the full version of the nuscense dataset, both test and train have their own sweeps and samples, and I can't put them together at all. My understanding is that the json files corresponding to the v1.0-train and v1.0-test folders are both used in conjunction with their respective sweep and sample services. In the screenshot you gave, how does the data preparation style fit them together?

nuscense数据集完整版中，test和train中都有各自的sweep和sample，我根本没有办法把他们放在一起的。我的理解是，文件夹v1.0-trainval和 v1.0-test对应的json文件都是和各自的sweep和sample服务的。你们给的截图里，数据准备的样式是如何把他们合在一起的？

It's confusing
这样的做法让人很迷惑

I would have no problem if I dealt with them separately, that is
我如果把他们分开处理是没有问题的，也就是
test：

train：

If I put the v1.0-test folder under the ./data_full/nuscenes directory together and put the v1.0-test folder, it won't find the corresponding sample and sweep when it create_data
如果我把分开处理后的文件合在一起，把v1.0-test文件夹放在 ./data_full/nuscenes路径下面，create_data的时候它就会找不到对应的sample和sweep

raise FileNotFoundError(msg_tmpl.format(filename))

FileNotFoundError: file "./data_full/nuscenes/samples/LIDAR_TOP/n008-2018-08-01-16-03-27-0400__LIDAR_TOP__1533153857947444.pcd.bin" does not exist

Reproduces the problem - code sample

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Reproduces the problem - command or script

python tools/create_data.py nuscenes --root-path ./data_full/nuscenes --out-dir ./data_full/nuscenes --extra-tag nuscenes

Reproduces the problem - error message

raise FileNotFoundError(msg_tmpl.format(filename))
FileNotFoundError: file "./data_full/nuscenes/samples/LIDAR_TOP/n008-2018-08-01-16-03-27-0400__LIDAR_TOP__1533153857947444.pcd.bin" does not exist

Additional information

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[thgim9]

卧槽 我跟你一样 的问题 困扰了好久一直显示有个lidartop文件找不到

[zhu2900000]

卧槽 我跟你一样 的问题 困扰了好久一直显示有个lidartop文件找不到

你不按照他这个放，test和train分开解析就没问题

[thgim9]

我想问问你用的mmdetection3d的版本 还有就是你在调用creat_data这个程序之前对这个程序进行修改过吗