Week 11 Summary
Different input techniques were discussed in this paper using the medium of push buttons. Two different implementations were tested using a TriggerGun and FingerSleeve. The trigger gun is is looks very much like a ill designed (ok fine, its a prototype) air craft controller joystick, made of clay which has two buttons, one in front for the index button and one behind actuated by the thumb. Another implementation – the FingerSleeve is worn on a elastic sleeve on the finger, which has two push buttons actuated using the thumb. Along with these push buttons, they use 6 DOF magnetic trackers.
The general interaction they use in the experiments are of “light pressure” to indicate “tentatively testing out” and “firm pressure” which attributes “confident confirmation”. Using these affordances the researchers designed a few experiments to test the feasibility of these input mechanisms. One system they explain is called the ZoomBack in which the users can focus (or zoom) at a point in space using a light pressure click, to see if they are interested in translating to the point. If they find it interesting they can firmly press the button to confirm translation, else release the button to come back to original position. LaserGrab is slightly more complicated. To select a target point on an object surface, they use a virtual laser pointer, and press a button lightly to begin navigation. Using the distance between the user’s head and hand, the system can control user’s location relative to the targeted object. The authors also attempted to test the system, using the FingerSleeve in a CAVE environment using the CavePainter, to create 3D paintings in a virtual environment. They use it in combination with a Fakespace Pinch glove which together allow interactions like painting while allowing to change brush size and color.
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