ImportError: cannot import name 'get_default_testdata' from 'common' (/home/user/source_builds/Open3D/examples/python/t_reconstruction_system/common.py)

[sandyflute]

Checklist

• I have searched for similar issues.
• For Python issues, I have tested with the latest development wheel.
• I have checked the release documentation and the latest documentation (for master branch).

Describe the issue

While running integrate.py(dense_slam.py as well) examples from t_reconstruction_system, a function, get_default_testdata, needs to be imported from common.py located in the same folder. Looks like this function is missing from the file.

Steps to reproduce the bug

Enter the python examples from open3d root dir:

`cd examples/python/t_reconstruction_system/`

run integrate.py

`python integrate.py`

Error message

Traceback (most recent call last):
  File "integrate.py", line 40, in <module>
    from common import load_rgbd_file_names, load_depth_file_names, save_poses, load_intrinsic, load_extrinsics, get_default_testdata
ImportError: cannot import name 'get_default_testdata' from 'common' (/home/username/source_builds/Open3D/examples/python/t_reconstruction_system/common.py)

Expected behavior

No response

Open3D, Python and System information

- Operating system: Ubuntu 18.04 64-bit
- Python version: Python 3.8.13 
- Open3D version: output from python: 0.15.2+393bbce6 `print(open3d.__version__)`
- System architecture: x86
- Is this a remote workstation?: no
- How did you install Open3D?: build from source
- Compiler version (if built from source): gcc 7.5.0

Additional information

No response

[yuecideng]

Hi, this error can be fixed by PR #5326. You can try to use integrate_custom.py currently.