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No mesh objects found in vrm object issue #3

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No mesh objects found in vrm object issue#3
@kevinhuangxf

Description

@kevinhuangxf
kevinhuangxf
opened on Oct 1, 2025

Thanks for the greak work!

I have downloadded the vroid dataset:

Download Model
Download Model
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Download Model


========== Finished Crawling ==========


Models Collected: 
16046

Now I'm running the extract.py script.

But I found many vrm file are detected no mesh so fail to extract the hair.

Is it a normal phenomenon?

Should I update the train_list if only part of the hair object can be detected?

python blender/distributed_uniform.py --input_dir /workspace/code/CHARM/dataset/vroid-dataset/VRoidSpider/_data/lustrous/raw/vroid/ --save_dir /workspace/code/CHARM/dataset/vroid_processed --workers 1
Unprocessed files: 13423
Processing: /workspace/code/CHARM/dataset/vroid-dataset/VRoidSpider/_data/lustrous/raw/vroid//0/1017021745350671390/1017021745350671390.vrm
Blender 3.6.23 (hash e467db79ca8c built 2025-06-17 01:32:54)
Warning: Falling back to the standard locale ("C")
Read prefs: "/root/.config/blender/3.6/config/userpref.blend"
Failed to open dir (No such file or directory): /run/user/101088/gvfs/
[VRM Add-on:WARNING] class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=everyone&corporate_commercial_use=disallow&credit=necessary&modification=disallow&personal_commercial_use=disallow&redistribution=disallow&sexual_expression=allow&version=1&violent_expression=allow
json_key=otherLicenseUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=everyone&corporate_commercial_use=disallow&credit=necessary&modification=disallow&personal_commercial_use=disallow&redistribution=disallow&sexual_expression=allow&version=1&violent_expression=allow
json_key=otherPermissionUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

Error: Python: Traceback (most recent call last):
  File "/workspace/code/CHARM/blender/extract_hair.py", line 598, in <module>
    extract_hair(
  File "/workspace/code/CHARM/blender/extract_hair.py", line 523, in extract_hair
    metadata = metadata_extractor.get_metadata()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 489, in get_metadata
    "scene_size": self.get_scene_size(),
  File "/workspace/code/CHARM/blender/extract_hair.py", line 442, in get_scene_size
    bbox_min, bbox_max = scene_bbox()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 151, in scene_bbox
    raise RuntimeError("no objects in scene to compute bounding box for")
RuntimeError: no objects in scene to compute bounding box for

Blender quit
Processing: /workspace/code/CHARM/dataset/vroid-dataset/VRoidSpider/_data/lustrous/raw/vroid//0/1054990230631284690/1054990230631284690.vrm
Blender 3.6.23 (hash e467db79ca8c built 2025-06-17 01:32:54)
Warning: Falling back to the standard locale ("C")
Read prefs: "/root/.config/blender/3.6/config/userpref.blend"
Failed to open dir (No such file or directory): /run/user/101088/gvfs/
[VRM Add-on:WARNING] class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=everyone&corporate_commercial_use=disallow&credit=necessary&modification=disallow&personal_commercial_use=disallow&redistribution=disallow&sexual_expression=allow&version=1&violent_expression=allow
json_key=otherLicenseUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=everyone&corporate_commercial_use=disallow&credit=necessary&modification=disallow&personal_commercial_use=disallow&redistribution=disallow&sexual_expression=allow&version=1&violent_expression=allow
json_key=otherPermissionUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

Error: Python: Traceback (most recent call last):
  File "/workspace/code/CHARM/blender/extract_hair.py", line 598, in <module>
    extract_hair(
  File "/workspace/code/CHARM/blender/extract_hair.py", line 523, in extract_hair
    metadata = metadata_extractor.get_metadata()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 489, in get_metadata
    "scene_size": self.get_scene_size(),
  File "/workspace/code/CHARM/blender/extract_hair.py", line 442, in get_scene_size
    bbox_min, bbox_max = scene_bbox()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 151, in scene_bbox
    raise RuntimeError("no objects in scene to compute bounding box for")
RuntimeError: no objects in scene to compute bounding box for

Blender quit
Processing: /workspace/code/CHARM/dataset/vroid-dataset/VRoidSpider/_data/lustrous/raw/vroid//0/1075021937486584940/1075021937486584940.vrm
Blender 3.6.23 (hash e467db79ca8c built 2025-06-17 01:32:54)
Warning: Falling back to the standard locale ("C")
Read prefs: "/root/.config/blender/3.6/config/userpref.blend"
Failed to open dir (No such file or directory): /run/user/101088/gvfs/
[VRM Add-on:WARNING] class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=everyone&corporate_commercial_use=disallow&credit=necessary&modification=disallow&personal_commercial_use=disallow&redistribution=disallow&sexual_expression=disallow&version=1&violent_expression=disallow
json_key=otherLicenseUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=everyone&corporate_commercial_use=disallow&credit=necessary&modification=disallow&personal_commercial_use=disallow&redistribution=disallow&sexual_expression=disallow&version=1&violent_expression=disallow
json_key=otherPermissionUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

Error: Python: Traceback (most recent call last):
  File "/workspace/code/CHARM/blender/extract_hair.py", line 598, in <module>
    extract_hair(
  File "/workspace/code/CHARM/blender/extract_hair.py", line 523, in extract_hair
    metadata = metadata_extractor.get_metadata()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 489, in get_metadata
    "scene_size": self.get_scene_size(),
  File "/workspace/code/CHARM/blender/extract_hair.py", line 442, in get_scene_size
    bbox_min, bbox_max = scene_bbox()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 151, in scene_bbox
    raise RuntimeError("no objects in scene to compute bounding box for")
RuntimeError: no objects in scene to compute bounding box for

Blender quit
Processing: /workspace/code/CHARM/dataset/vroid-dataset/VRoidSpider/_data/lustrous/raw/vroid//0/1086104341257357750/1086104341257357750.vrm
Blender 3.6.23 (hash e467db79ca8c built 2025-06-17 01:32:54)
Warning: Falling back to the standard locale ("C")
Read prefs: "/root/.config/blender/3.6/config/userpref.blend"
Failed to open dir (No such file or directory): /run/user/101088/gvfs/
[VRM Add-on:WARNING] class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=everyone&corporate_commercial_use=allow&credit=necessary&modification=disallow&personal_commercial_use=nonprofit&redistribution=disallow&sexual_expression=allow&version=1&violent_expression=allow
json_key=otherLicenseUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=everyone&corporate_commercial_use=allow&credit=necessary&modification=disallow&personal_commercial_use=nonprofit&redistribution=disallow&sexual_expression=allow&version=1&violent_expression=allow
json_key=otherPermissionUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

Error: Python: Traceback (most recent call last):
  File "/workspace/code/CHARM/blender/extract_hair.py", line 598, in <module>
    extract_hair(
  File "/workspace/code/CHARM/blender/extract_hair.py", line 523, in extract_hair
    metadata = metadata_extractor.get_metadata()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 489, in get_metadata
    "scene_size": self.get_scene_size(),
  File "/workspace/code/CHARM/blender/extract_hair.py", line 442, in get_scene_size
    bbox_min, bbox_max = scene_bbox()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 151, in scene_bbox
    raise RuntimeError("no objects in scene to compute bounding box for")
RuntimeError: no objects in scene to compute bounding box for

Blender quit
Processing: /workspace/code/CHARM/dataset/vroid-dataset/VRoidSpider/_data/lustrous/raw/vroid//0/1107966252827422570/1107966252827422570.vrm
Blender 3.6.23 (hash e467db79ca8c built 2025-06-17 01:32:54)
Warning: Falling back to the standard locale ("C")
Read prefs: "/root/.config/blender/3.6/config/userpref.blend"
Failed to open dir (No such file or directory): /run/user/101088/gvfs/
[VRM Add-on:WARNING] class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=everyone&corporate_commercial_use=disallow&credit=necessary&modification=disallow&personal_commercial_use=disallow&redistribution=disallow&sexual_expression=disallow&version=1&violent_expression=disallow
json_key=otherLicenseUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=everyone&corporate_commercial_use=disallow&credit=necessary&modification=disallow&personal_commercial_use=disallow&redistribution=disallow&sexual_expression=disallow&version=1&violent_expression=disallow
json_key=otherPermissionUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

Error: Python: Traceback (most recent call last):
  File "/workspace/code/CHARM/blender/extract_hair.py", line 598, in <module>
    extract_hair(
  File "/workspace/code/CHARM/blender/extract_hair.py", line 523, in extract_hair
    metadata = metadata_extractor.get_metadata()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 489, in get_metadata
    "scene_size": self.get_scene_size(),
  File "/workspace/code/CHARM/blender/extract_hair.py", line 442, in get_scene_size
    bbox_min, bbox_max = scene_bbox()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 151, in scene_bbox
    raise RuntimeError("no objects in scene to compute bounding box for")
RuntimeError: no objects in scene to compute bounding box for

Blender quit
Processing: /workspace/code/CHARM/dataset/vroid-dataset/VRoidSpider/_data/lustrous/raw/vroid//0/1120169165975032970/1120169165975032970.vrm
Blender 3.6.23 (hash e467db79ca8c built 2025-06-17 01:32:54)
Warning: Falling back to the standard locale ("C")
Read prefs: "/root/.config/blender/3.6/config/userpref.blend"
Failed to open dir (No such file or directory): /run/user/101088/gvfs/
[VRM Add-on:WARNING] class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=everyone&corporate_commercial_use=allow&credit=unnecessary&modification=disallow&personal_commercial_use=nonprofit&redistribution=allow&sexual_expression=allow&version=1&violent_expression=allow
json_key=otherLicenseUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=everyone&corporate_commercial_use=allow&credit=unnecessary&modification=disallow&personal_commercial_use=nonprofit&redistribution=allow&sexual_expression=allow&version=1&violent_expression=allow
json_key=otherPermissionUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

Error: Python: Traceback (most recent call last):
  File "/workspace/code/CHARM/blender/extract_hair.py", line 598, in <module>
    extract_hair(
  File "/workspace/code/CHARM/blender/extract_hair.py", line 523, in extract_hair
    metadata = metadata_extractor.get_metadata()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 489, in get_metadata
    "scene_size": self.get_scene_size(),
  File "/workspace/code/CHARM/blender/extract_hair.py", line 442, in get_scene_size
    bbox_min, bbox_max = scene_bbox()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 151, in scene_bbox
    raise RuntimeError("no objects in scene to compute bounding box for")
RuntimeError: no objects in scene to compute bounding box for

Blender quit
Processing: /workspace/code/CHARM/dataset/vroid-dataset/VRoidSpider/_data/lustrous/raw/vroid//0/1129399045952250150/1129399045952250150.vrm
Blender 3.6.23 (hash e467db79ca8c built 2025-06-17 01:32:54)
Warning: Falling back to the standard locale ("C")
Read prefs: "/root/.config/blender/3.6/config/userpref.blend"
Failed to open dir (No such file or directory): /run/user/101088/gvfs/
[VRM Add-on:WARNING] class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=everyone&corporate_commercial_use=allow&credit=necessary&modification=disallow&personal_commercial_use=nonprofit&redistribution=disallow&sexual_expression=allow&version=1&violent_expression=allow
json_key=otherLicenseUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=everyone&corporate_commercial_use=allow&credit=necessary&modification=disallow&personal_commercial_use=nonprofit&redistribution=disallow&sexual_expression=allow&version=1&violent_expression=allow
json_key=otherPermissionUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

Error: Python: Traceback (most recent call last):
  File "/workspace/code/CHARM/blender/extract_hair.py", line 598, in <module>
    extract_hair(
  File "/workspace/code/CHARM/blender/extract_hair.py", line 523, in extract_hair
    metadata = metadata_extractor.get_metadata()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 489, in get_metadata
    "scene_size": self.get_scene_size(),
  File "/workspace/code/CHARM/blender/extract_hair.py", line 442, in get_scene_size
    bbox_min, bbox_max = scene_bbox()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 151, in scene_bbox
    raise RuntimeError("no objects in scene to compute bounding box for")
RuntimeError: no objects in scene to compute bounding box for

Blender quit
Processing: /workspace/code/CHARM/dataset/vroid-dataset/VRoidSpider/_data/lustrous/raw/vroid//0/1135354269388833310/1135354269388833310.vrm
Blender 3.6.23 (hash e467db79ca8c built 2025-06-17 01:32:54)
Warning: Falling back to the standard locale ("C")
Read prefs: "/root/.config/blender/3.6/config/userpref.blend"
Failed to open dir (No such file or directory): /run/user/101088/gvfs/
[VRM Add-on:WARNING] class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=everyone&corporate_commercial_use=disallow&credit=necessary&modification=disallow&personal_commercial_use=disallow&redistribution=disallow&sexual_expression=disallow&version=1&violent_expression=allow
json_key=otherLicenseUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=everyone&corporate_commercial_use=disallow&credit=necessary&modification=disallow&personal_commercial_use=disallow&redistribution=disallow&sexual_expression=disallow&version=1&violent_expression=allow
json_key=otherPermissionUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

Error: Python: Traceback (most recent call last):
  File "/workspace/code/CHARM/blender/extract_hair.py", line 598, in <module>
    extract_hair(
  File "/workspace/code/CHARM/blender/extract_hair.py", line 523, in extract_hair
    metadata = metadata_extractor.get_metadata()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 489, in get_metadata
    "scene_size": self.get_scene_size(),
  File "/workspace/code/CHARM/blender/extract_hair.py", line 442, in get_scene_size
    bbox_min, bbox_max = scene_bbox()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 151, in scene_bbox
    raise RuntimeError("no objects in scene to compute bounding box for")
RuntimeError: no objects in scene to compute bounding box for

Blender quit
Processing: /workspace/code/CHARM/dataset/vroid-dataset/VRoidSpider/_data/lustrous/raw/vroid//0/1150871373227540420/1150871373227540420.vrm
Blender 3.6.23 (hash e467db79ca8c built 2025-06-17 01:32:54)
Warning: Falling back to the standard locale ("C")
Read prefs: "/root/.config/blender/3.6/config/userpref.blend"
Failed to open dir (No such file or directory): /run/user/101088/gvfs/
[VRM Add-on:WARNING] class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=author&corporate_commercial_use=disallow&credit=necessary&modification=disallow&personal_commercial_use=disallow&redistribution=disallow&sexual_expression=disallow&version=1&violent_expression=disallow
json_key=otherLicenseUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

class=LicenseConfirmationRequired
url=https://hub.vroid.com/license?allowed_to_use_user=everyone&characterization_allowed_user=author&corporate_commercial_use=disallow&credit=necessary&modification=disallow&personal_commercial_use=disallow&redistribution=disallow&sexual_expression=disallow&version=1&violent_expression=disallow
json_key=otherPermissionUrl
message=This VRM is licensed by VRoid Hub License "Alterations: No".

Error: Python: Traceback (most recent call last):
  File "/workspace/code/CHARM/blender/extract_hair.py", line 598, in <module>
    extract_hair(
  File "/workspace/code/CHARM/blender/extract_hair.py", line 523, in extract_hair
    metadata = metadata_extractor.get_metadata()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 489, in get_metadata
    "scene_size": self.get_scene_size(),
  File "/workspace/code/CHARM/blender/extract_hair.py", line 442, in get_scene_size
    bbox_min, bbox_max = scene_bbox()
  File "/workspace/code/CHARM/blender/extract_hair.py", line 151, in scene_bbox
    raise RuntimeError("no objects in scene to compute bounding box for")
RuntimeError: no objects in scene to compute bounding box for

Blender quit
Processing: /workspace/code/CHARM/dataset/vroid-dataset/VRoidSpider/_data/lustrous/raw/vroid//0/115573660714302690/115573660714302690.vrm
Blender 3.6.23 (hash e467db79ca8c built 2025-06-17 01:32:54)
Warning: Falling back to the standard locale ("C")
Read prefs: "/root/.config/blender/3.6/config/userpref.blend"
Failed to open dir (No such file or directory): /run/user/101088/gvfs/
Data are loaded, start creating Blender stuff
glTF import finished in 0.18s
07:22:26 | INFO: Draco mesh compression is available, use library at /workspace/code/iphg/blender-3.6.23-linux-x64/3.6/python/lib/python3.10/site-packages/libextern_draco.so
07:22:26 | INFO: Starting glTF 2.0 export
07:22:26 | INFO: Extracting primitive: Hair001.baked
07:22:26 | INFO: Primitives created: 3
07:22:26 | WARNING: More than one shader node tex image used for a texture. The resulting glTF sampler will behave like the first shader node tex image.
07:22:26 | WARNING: More than one shader node tex image used for a texture. The resulting glTF sampler will behave like the first shader node tex image.
07:22:26 | WARNING: More than one shader node tex image used for a texture. The resulting glTF sampler will behave like the first shader node tex image.
07:22:26 | INFO: Finished glTF 2.0 export in 0.07239031791687012 s

Exported /workspace/code/CHARM/dataset/vroid_processed/0/115573660714302690/hair.glb

Blender quit
Processing: /workspace/code/CHARM/dataset/vroid-dataset/VRoidSpider/_data/lustrous/raw/vroid//0/1163149156109630540/1163149156109630540.vrm
Blender 3.6.23 (hash e467db79ca8c built 2025-06-17 01:32:54)
Warning: Falling back to the standard locale ("C")
Read prefs: "/root/.config/blender/3.6/config/userpref.blend"
Failed to open dir (No such file or directory): /run/user/101088/gvfs/
Data are loaded, start creating Blender stuff
glTF import finished in 0.20s

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