DOPEWriter doesn't work with nvdu_viz for visualization due to not having _camera_settings.json

For the Nvidia Deep Learning Data Synthesizer (NDDS), I use NVDU Utility (nvdu_viz) for visualizing the 3D BBox.

So, when I try to run it on the produced json file by DOPEWriter from Replicator, I get this error:

(isaac-sim) mona@ard-gpu-01:~/.local/share/ov/pkg/isaac_sim-2022.2.0/first_pass_out_dope_headless$ nvdu_viz  RenderProduct_Replicator
args: Namespace(dataset_dir='RenderProduct_Replicator', data_annot_dir='', size=[0, 0], object_settings_path=None, camera_settings_path=None, name_filters=['*.png'], fps=10, auto_change=False, export_dir='', auto_export=False, ignore_fixed_transform=False)
name_filters: ['*.png']
Traceback (most recent call last):
  File "/home/mona/.local/bin/nvdu_viz", line 8, in <module>
  File "/home/mona/.local/lib/python3.10/site-packages/nvdu/tools/", line 92, in main
    camera_intrinsic_settings = CameraIntrinsicSettings.from_json_file(camera_settings_path)
  File "/home/mona/.local/lib/python3.10/site-packages/nvdu/core/", line 86, in from_json_file
    with open(json_file_path, 'r') as json_file:
FileNotFoundError: [Errno 2] No such file or directory: 'RenderProduct_Replicator/_camera_settings.json'

My questions are:

  1. Do you expect nvdu_viz to work with the DOPEWriter json outputs?
  2. If the answer to 1 is no, can you please share a snippet for visualizing the 3D BBox of objects?

My folders are:

(isaac-sim) mona@ard-gpu-01:~/.local/share/ov/pkg/isaac_sim-2022.2.0/first_pass_out_dope_headless$ tree -d .
โ”œโ”€โ”€ RenderProduct_omni_kit_widget_viewport_ViewportTexture_0
โ”‚   โ””โ”€โ”€ rgb
โ”œโ”€โ”€ RenderProduct_Replicator
โ”‚   โ””โ”€โ”€ rgb
โ””โ”€โ”€ RenderProduct_Replicator_01
    โ””โ”€โ”€ rgb

6 directories

Inside each folder there is an RGB folder along with a bunch of json files.

NVDU: Dataset_Utilities/nvdu/viz at master ยท NVIDIA/Dataset_Utilities ยท GitHub
NDDS: GitHub - NVIDIA/Dataset_Synthesizer: NVIDIA Deep learning Dataset Synthesizer (NDDS)

Hello @mona.jalal! Iโ€™ve shared your post with the dev team for further assistance.

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