Documentation
  • Introduction
  • Tutorials
    • Getting started
    • Python SDK quickstart
    • Model-assisted labeling
  • How to annotate
    • Label images
      • View and navigate in the image interfaces
      • Image interface settings
      • Image segmentation interface
      • Image vector interface
    • Label 3D point clouds
      • View and navigate in the 3D interface
      • Upload, view, and overlay images
      • 3D interface settings
      • 3D point cloud cuboid interface
      • 3D point cloud vector interface
      • 3D point cloud segmentation interface
      • Merged point cloud view (for static objects)
      • Batch mode (for dynamic objects)
      • Smart cuboid propagation
      • 3D to 2D Projection
      • Tips for labeling cuboid sequences
    • Label sequences of data
      • Use track IDs in sequences
      • Use keyframe interpolation
    • Annotate object links (beta)
    • Customize hotkeys
  • How to manage
    • Add collaborators to a dataset
    • Create an organization
    • Configure the label editor
    • Customize label queue
    • Search within a dataset
    • Clone a dataset
    • Work with issues
    • Bulk change label status
    • Manage QA processes
  • How to integrate
    • Import data
      • Cloud integrations
    • Export data
      • Structure of the release file
      • Exporting image annotations to different formats
    • Integrations
      • Hugging Face
      • W&B
      • Databricks
      • SceneBox
    • Create an API key
    • Upload model predictions
    • Set up webhooks
  • Background
    • Main concepts
    • Sequences
    • Label queue mechanics
    • Labeling metrics
    • 3D Tiles
    • Security
  • Reference
    • Python SDK
    • Task types
    • Sample formats
      • Supported file formats
    • Label formats
    • Categories and attributes
    • API
Powered by GitBook
On this page

Was this helpful?

  1. How to annotate
  2. Label 3D point clouds

Smart cuboid propagation

PreviousBatch mode (for dynamic objects)Next3D to 2D Projection

Last updated 1 year ago

Was this helpful?

Smart cuboid propagation automatically propagates a cuboid frame by frame. This can help you save time when annotating dynamic objects that do not move linearly. For linear movement, simply use .

Automatically propagate a cuboid

  1. Select the cuboid you want to propagate.

  2. Open the by clicking on the batch mode icon () in the right toolbar.

  3. Label the cuboid in the first frame(s) where the object is visible. Label the object in two consecutive frames to improve the smart propagation results.

  4. Select the last labeled frame.

  5. Press the "step forward" button () to propagate the cuboid forward one frame, or press the "forward" button () to propagate the cuboid forward until the end of the sequence.

  6. If you see the propagation going wrong, you can press the stop button () to stop the propagation. You can then correct the label and continue the propagation again.

Limitations

  • Objects need to contain enough points (~ hundreds of points) to be propagated reliably.

  • Objects that move erratically might not be tracked accurately. Specifically, their heading might move erratically as well.

  • You cannot switch browser tabs while smart cuboid propagation is propagating the object

keyframe interpolation
batch mode