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Design of Korean eye-typing interfaces based on multilevel input system  

Kim, Hojoong (서울대학교 기계항공공학부)
Woo, Sung-kyung (서울대학교 기계항공공학부)
Lee, Kunwoo (서울대학교 기계항공공학부)
Publication Information
Journal of the HCI Society of Korea / v.12, no.4, 2017 , pp. 37-44 More about this Journal
Abstract
Eye-typing is one kind of human-computer interactive input system which is implemented by location data of gaze. It is widely used as an input system for paralytics because it does not require physical motions other than the eye movement. However, eye-typing interface based on Korean character has not been suggested yet. Thus, this research aims to implement the eye-typing interface optimized for Korean. To begin with, design objectives were established based on the features of eye-typing: significant noise and Midas touch problem. Multilevel input system was introduced to deal with noise, and an area free from input button was applied to solve Midas touch problem. Then, two types of eye-typing interfaces were suggested on phonological consideration of Korean where each syllable is generated from combination of several phonemes. Named as consonant-vowel integrated interface and separated interface, the two interfaces are designed to input Korean in phases through grouped phonemes. Finally, evaluation procedures composed of comparative experiments against the conventional Double-Korean keyboard interface, and analysis on flow of gaze were conducted. As a result, newly designed interfaces showed potential to be applied as practical tools for eye-typing.
Keywords
Eye-typing interface design; Eye-typing; Eye tracking; Korean typing interface; Multilevel input system;
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