So right now I am at the IEEE Symposium on 3D User Interfaces in Singapore. We have a couple of publications which I’ll be posting over the next few days. First up is Adaptive Color Marker for SAR Environments. In a previous study we created interactive virtual control panels by projecting onto otherwise blank designs. We used a simple orange marker to track the position of the user’s finger. However, in a SAR environment, this approach suffers from several problems:
- The tracking system can’t track the marker if we project the same colour as the marker.
- Projecting onto the marker changes it’s appearance, causing tracking to fail.
- Users could not tell when they were pressing virtual controls, because their finger occluded the projection.
We address these problems with an active colour marker. We use a colour sensor to detect what is being projected onto the marker, and change the colour of the marker to an opposite colour, so that tracking continues to work. In addition, we can use the active marker as a form of visual feedback. For example, we can change the colour to indicate a virtual button press.
I’ve added the publication to my publications page, and here’s the video of the marker in action.