Cuboid
Last updated
Last updated
A Cuboid is a three-dimensional annotation tool used in point cloud and image data labeling to enclose objects within a cube-like shape. By specifying the length, width, and height of the cuboid, annotators can create a box around an object, helping to define its spatial dimensions and orientation in 3D space.
Cuboid tool is particularly useful in tasks like object detection and classification in 3D environments, such as autonomous driving, where understanding the object's size, position, and distance relative to the camera or sensor is critical. It allows accurate annotations of objects like cars, pedestrians, and buildings in real-world environments, improving the quality of training data for 3D computer vision models.
Click on the '+' icon of the class from the class list
Select 'Cuboid' from the drawing tool list.
If the point cloud is in 2D Mode, the interaction to draw a cuboid will take place from the top view representing it as a Rectangle. Click and drag the mouse on the point cloud to define it from the top and then make further adjustments using focus mode from the header.
If the point cloud is in 3D Mode, the interaction to draw a cuboid will take place by dropping a cuboid in the point cloud and then making adjustments using focus mode from the header.
The direction the object is facing is denoted by the yellow arrow. Set the direction using the rotation icon from the header or press shortcut R
The projection of the cuboid is simultaneously reflected in the corresponding images of the image panel.
Enter the annotation details.
Set the cuboid dimension using quick shortcuts to modify width, length and height.
The saved instance will appear on the class list with a box icon next to the Instance name.
The cuboid can be re-selected and modified by:
Select a vertex that needs to be edited and drag it to modify its location.
To change the yaw, pitch and roll, use CTRL (for Roll), SHIFT (for Yaw), ALT (for Pitch).
Drag the red, blue and green circles to modify the edge of the cuboid
Drag the red, blue and green lines to shift the entire cuboid in a certain direction.
The blue square within the cuboid allows the user to move the cuboid within one plane
Learn Cuboid Dimension Modification Shortcuts.
Learn How to Interpolate Cuboids
Cuboids can be duplicated by selecting the annotation and pressing Ctrl D. This will duplicate the cuboid and allow the user to drop it at the desired location in the point cloud on mouse-click.
Duplication of cuboid works intra-frame and does not copy the instance ID of the original Cuboid.
Cuboids can be copy and pasted to another frame where it does not exist (Ctrl+C / Ctrl+V). The annotation detail input prompts user for input on pasting annotation. By default, the pasted cuboid will share the same Instance ID as the one of the copied cuboid.
Copy and pasting of cuboid works inter-frame (across frames where the same instance ID doesn't exist).
