UnrealCV Dev for UnrealZoo

These continuously developed features are currently provided and tested first in UnrealZoo. They are not part of the open-source UnrealCV command contract unless they also appear in the main Command System reference.

The feature pages in the UnrealCV Dev for UnrealZoo section document the development-only capture, recording, annotation, and runtime object workflows. The PAK workflow is intentionally documented outside this overview so the overview remains focused on runtime capabilities.

• Improved capture performance for common modalities such as lit, mask, and depth.

  • Since December 2025, frame throughput has been steadily improved, especially around the BaseCamSensor path.

  • In test cases, lit capture throughput improved from roughly 15 fps to 20 fps.

• Updated camera ID support to remain compatible with existing legacy camera addressing while also providing the newer stable CID format for long-term use in scripts and configurations.

  • Existing Python camera APIs remain backward compatible.

  • New Python APIs expose stable CID-* camera identifiers explicitly:

    • get_camera_list_cid()

    • get_camera_id_map()

  • Legacy camera discovery remains available through:

    • get_camera_list_legacy()

• Added annotation command support for scene and actor labeling workflows. See :doc:reference/annotation-system for the command and Python API details.

• Added object spawning from asset paths via spawn_from_path. See :doc:reference/object-spawning-from-path for the path format and examples.