ValueError: '000000' is not in list

[prrw]

Describe the issue

@cornerfarmer

The BopWriter fails during calc_mask_info_coco. I am using blenderproc==2.7.0 under Windows with python==3.8.10.
I am getting the following error when I run the camera_object_pose example:

blenderproc run examples/basics/camera_object_pose/main.py examples/basics/camera_object_pose/obj_000004.ply examples/basics/camera_object_pose/output

Error:

c:\data\git\demonstrator-data-generation\.env\lib\site-packages\blenderproc\python\writer\BopWriterUtility.py:130: UserWarning: WARNING: `m2mm` is deprecated, please use `annotation_scale='mm'` instead!
  warnings.warn("WARNING: `m2mm` is deprecated, please use `annotation_scale='mm'` instead!")
Error: Python: Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "C:\Data\Git\demonstrator-data-generation\../BlenderProc/examples/basics/camera_object_pose/main.py", line 61, in <module>
    bproc.writer.write_bop(args.output_dir, [obj], data["depth"], data["colors"], m2mm=True, append_to_existing_output=True)
  File "c:\data\git\demonstrator-data-generation\.env\lib\site-packages\blenderproc\python\writer\BopWriterUtility.py", line 149, in write_bop
    chunk_dirs = chunk_dirs[chunk_dir_ids.index(f"{starting_chunk_id:06d}"):]
ValueError: '000000' is not in list

Error: script failed, file: '../BlenderProc/examples/basics/camera_object_pose/main.py', exiting.
Cleaning temporary directory

Minimal code example

No response

Files required to run the code

No response

Expected behavior

The example is not updated with blenderproc version 2.7.0. However, the example should run without throwing error.

BlenderProc version

v2.7.0

[cornerfarmer]

Hey @prrw,

I cannot reproduce this error. Maybe clean the output dir examples/basics/camera_object_pose/output and see if that helps.

[prrw]

Hey thanks for the quick reply @cornerfarmer. However the directory did not exist before. Is the problem specific to Windows ?

UPDATE: So this error does not appear on Linux system. However, there I end up getting free(): invalid pointer error #1099

@cornerfarmer may be you would want to try to reproduce it on a windows system ?

[seedofshadow]

I also encountered this problem and found out it was caused by os.path.join, which uses '\' in windows whereas under unix it uses '/'. However Bop writer uses split('/') which does not recognize '\'. A possible workaround could be adding replace('\', '/').

[prrw]

Oh thanks. May be this can be resolved in the next commit ? @cornerfarmer

[cornerfarmer]

Sorry for the late reply, I have fixed that bug already on this branch https://github.com/DLR-RM/BlenderProc/tree/iss1108_bop_writer_windows
However, I found that there was a subsequent problem with the multiprocessing in the bop writer on windows.