TY  - JOUR
PY  - 2016//
TI  - Design and evaluation of shape-changing haptic interfaces for pedestrian navigation assistance
JO  - IEEE transactions on haptics
A1  - Spiers, Adam
A1  - Dollar, Aaron
SP  - 17
EP  - 28
VL  - 10
IS  - 1
N2  - Shape-changing interfaces are a category of device capable of altering their form in order to facilitate communication of information. In this work we present a shape-changing device that has been designed for navigation assistance. 'The Animotus'(previously, 'The Haptic Sandwich'),resembles a cube with an articulated upper half that is able to rotate and extend (translate) relative to the bottom half, which is fixed in the user's grasp. This rotation and extension, generally felt via the user's fingers, is used to represent heading and proximity to navigational targets. The device is intended to provide an alternative to screen or audio based interfaces for visually impaired, hearing impaired, deaf blindand sighted pedestrians. The motivation and design of the haptic device is presented, followed by the results of a navigation experiment that aimed to determine the role of each device DOF, in terms of facilitating guidance. An additional device, 'The Haptic Taco', which modulated its volume in response to target proximity(negating directional feedback),was also compared. <br><br>RESULTS indicate that while the heading (rotational) DOF benefited motion efficiency, the proximity (translational) DOF benefited velocity. Combination of the two DOF improved overall performance. The volumetric Taco performed comparably to the Animotus' extension DOF.<p />  <p>Language: en</p>
LA  - en
SN  - 1939-1412
UR  - http://dx.doi.org/10.1109/TOH.2016.2582481
ID  - ref1
ER  -