Modeling directional effects on touch offset = 터치 오프셋의 방향성 효과 모델링

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Pointing with fingers on touchscreens has become the primary input method of today. In the touch pointing process, the center of the hit distribution of a user’s touch is generally not positioned at the center of the target; instead, it has a certain offset. This study explains why such touch offsets occur, and presents a mathematical model for predicting how the degree of offset changes with a given angle of approach to the target (i.e., directional effects). Specifically, the model explains that it is natural for the user to undershoot the target to minimize the expected squared touch error. In the user study of single target touch pointing task with a circular target using the index finger, the model successfully predicted the offsets of the touch ($R^2$= 0.8751). Furthermore, this paper also verifies whether the model can predict the touch offset for each key in the mobile soft keyboard through the user study of the touch typing task. The paper concludes with the discussions, including the limitation of the current model and possible future works.
Advisors
Lee, Byungjooresearcher이병주researcher
Description
한국과학기술원 :문화기술대학원,
Publisher
한국과학기술원
Issue Date
2020
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 문화기술대학원, 2020.8,[iv, 36 p. :]

Keywords

Touch Offset▼aSchmidt's law▼aFitts' law▼aDirectional effect▼aTouch pointing▼aTouch target selection▼atouch typing; 터치 오프셋▼a슈미츠 법칙▼a피츠 법칙▼a방향성의 영향▼a터치 포인팅▼a터치 타겟 셀렉션; 터치 타이핑

URI
http://hdl.handle.net/10203/285025
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=925189&flag=dissertation
Appears in Collection
GCT-Theses_Master(석사논문)
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