Week 11 Summary
Pop Through Button Devices for VE Navigation and Interaction
The paper describes a novel class of virtual reality input devices that combine pop through buttons with 6 DOF trackers. Following characteristics of pop through devices can be used to improve virtual environment interaction. Twice as many activation states available in the same physical surface area. A bare minimum of additional physical activity is required to activate the additional state. The physical activity of popping through one button state to another is more natural than pressing separate buttons would be.
The paper describes two input devices namely FingerSleeve and TriggerGun. The FingerSleeve device mounts two small pop through buttons on an elastic frame, with the tracker placed on the back of the sleeve. The TriggerGun device houses two pop through buttons mounted on a modeling clay frame. One is placed on the front to be used as a trigger, and the other is placed on top for thumb activation.
In order to understand the capabilities of these devices a couple of techniques like LaserGrab and ZoomBack were implemented. In Zoomback the user is translated towards the target point on pressing the button and is brought back to his original position on releasing the button.In LaserGrab the user moves relative to the object. The relative distance between the users head and hand is used to determine his distance from the object in VE.
The paper also describes CavePainting using pop through devices, it claims that using pop through devices is better than the use of Pinch glove. Such devices help to achieve improve functionality and solve the ergonomic problems of the older system.
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