Using Linear and Non-linear Magnifiers in Eyetracking-Based Human Computer Interaction
Florian Eggenkemper, Jana Krahe, Tobias Guth, Johanna Wendel, Robert George Mertens · 2018
Eye tracking based interfaces have to solve two major problems: The Midas-touch problem and accuracy. Midas-touch describes the fact that many interfaces use fixation as an interaction signal. Hence, orientation and interaction can hardly be kept apart. While the Midas-touch problem can be tackled with innovative interaction concepts, accuracy problems result from both human physiology and increasing screen resolutions. The Multi Modal Interaction Concept for Efficient Input (M2ice) approach tries to tackle these problems by providing a magnifier. This magnifier can have different shapes and magnification methods that all come with various advantages and disadvantages. This paper discusses the advantages and disadvantages of a number of state-of-the-art magnification approaches in the light of eye tracking based interfaces and presents a new implementation of the M2ice prototype implementation that employs a hybrid fisheye magnification.