How to create and edit BBs

To create or edit BBs, a BB chart with the ground truth BBs needs to be created. Once the BB chart is created, select the pen icon on the far right of the Charts title bar, and then you can start to create a new BB by clicking and dragging in the chart.

The newly created BB is assigned to be the current active label displayed on the BBS 'label' menu on the lower left corner of the chart. If you want to change the BB to another label, click the label there and select a label in the dropdown menu as shown below, or press the keyboard shortcuts K or L to go to the previous or next label until the desired one is reached. Note that, to change the label for a BB, the BB must be selected.

If you are in the pan/select mode (i.e., the arrow pointer), you can create a BB by Ctrl + RightDrag.

To edit a BB, click and drag an edge or a corner of the BB when in pan/select mode.

To delete a BB, there are three options:

  • RightClick on the BB, and then click Delete bounding box on the popup menu

  • Select the BB, press Delete or Backspace

  • Ctrl + Shift + click the BB.

Operating on a ground truth BB vs a predicted BB

  • Ctrl + Shift + click on a ground truth BB: delete the BB. A red X will appear on the BB you are about to delete when holding the two modifier keys.

  • Shift + click on a predicted BB: accept the BB as a ground truth BB. A green check mark will appear on the BB you are about to accept when holding the modifier key. For details about coverting predicted BBs to ground truth BBs, please visit this page.

Operating on an oriented BB (OBB)

  • The ways to create a OBB is the same as creating an ordinary BB.

  • Dragging an edge of a OBB will allow for resizing and/or rotating the OBB around its center point. A visual indicator of both resizing and rotating will appear when hovering over an edge.

  • Ctrl + LeftDragging on an edge will only resize the OBB.

  • Shift + LeftDragging on an edge will only rotate the OBB.

  • Dragging a corner of a OBB will only resize the OBB.

To save the edits, you must commit them to a new revision.