Common Canvas Tools
This tool allows users to click and drag any bounding boxes or annotation masks, or adjust bounding boxes already on the canvas. To select more than one annotation at a time, either click and drag a box around them, or hold down the Shift button as you select each one.
Click and drag the zoom tool over a region of the video to expand it. Click the video to gradually zoom in; hold Shift and click to gradually zoom out. See other options for changing the video scale and position here.
Annotators can view the context menu by right clicking on any part of the annotation canvas. The context menu allows annotators to change class or delete any object, fill holes in a segmentation mask, or 'ungroup' a multi-polygon instance into multiple individual instances.
The submit button allows the annotator to submit their annotations and move on to the next piece of data to annotate. Once annotations are submitted, only project members with supervisor access can view and edit those annotations.
This button allows annotators to flag work and move to the next item to annotate. Flagging work will submit it and generate a message to the task creator that allows them to view that specific video and annotation set in the canvas to address the concern.
Use the work history panel while annotating to navigate back to recent submissions and edit when necessary. As you annotate, your last ten annotations will be displayed in the history panel, with the most recent submission at the top.