Abstract
Drawing annotations on shared live video has been investigated as a tool for remote collaboration. However, if a local user changes the viewpoint of a shared live video while a remote user is drawing an annotation, the annotation is projected and drawn at wrong place. Prior work suggested manually freezing the video while annotating to solve the issue, but this needs additional user input. We introduce a solution that automatically freezes the video, and present the results of a user study comparing it with manual freeze and no freeze conditions. Auto-freeze was most preferred by both remote and local participants who felt it best solved the issue of annotations appearing in the wrong place. With auto-freeze, remote users were able to draw annotations quicker, while the local users were able to understand the annotations clearer.
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