How to navigate BBs

To navigate BBs, select one BB and click the < or > icon on the chart’s title bar (or press Left or Right arrow key) to navigate to previous or next BB. Note that the ground truth and predicted BBs are navigated independently. In other words, when navigating through the ground truth BBs, the predicted BBs will not be visited, and vice versa, even if they are plotted on the same chart.

Navigating to a new BB will by default snap the view to that BB as shown below.

There are three options, immediate, smooth, and off, when it comes to Snap to next/previous bounding box or image layer in the global settings dialog. If you don’t want to snap to the next/previous BB, select off for it.

To snap to a specific BB, you can DoubleClick on the BB, when the option of Snap to double-clicked bounding box or image layer is on immediate or smooth.

To select multiple BBs, you can do one of the three ways:

  • CTRL + click on BBs

  • Use a polygon selection tool to select BBs

  • CTRL + A to select all BBs on the chart

Note: when using a polygon selection tool, the BBs will be selected as long as the BBs are partially inside the polygon.

You can also adjust the Snap-to-box margin setting to choose the zoom-in level when the BB is snapped to.

In addition, you can change the BB settings about the outline style and mask opacity under the BOUNDING BOX EDITING section. The outline style refers to the outline around the BB when it is selected, and the default color is green. The mask opacity refers to the opacity outside of the selected BB(s). The example below shows the effect with default outline style and 0.5 for mask opacity.