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In‐Air finger motion interface for mobile devices with vibration feedback
Author(s) -
Niikura Takehiro,
Watanabe Yoshihiro,
Komuro Takashi,
Ishikawa Masatoshi
Publication year - 2014
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.21982
Subject(s) - computer vision , computer science , interface (matter) , vibration , artificial intelligence , mobile device , position (finance) , transformation (genetics) , track (disk drive) , translation (biology) , motion (physics) , simulation , acoustics , physics , biochemistry , chemistry , bubble , finance , maximum bubble pressure method , parallel computing , messenger rna , economics , gene , operating system
In this paper, we propose the ‘in‐air finger motion interface’, which solves a problem users face in interacting with mobile devices. The interface uses only a single small camera to track the three‐dimensional (3D) position of the user's finger. The finger region is robustly extracted by using flashing infrared light‐emitting diodes (LEDs) and by obtaining the difference image between an illuminated image and a nonilluminated image. The movement of the finger is modeled by transformation of a finger image, and its parameters are accurately estimated by iterative template matching. As a result of the evaluation, an operating area 131% larger than the size of the display and accuracy of input action of 0.6 mm in the x ‐direction are realized. Finally, to investigate the effect of vibration feedback, we conducted a study and found that vibration feedback significantly reduces the average time to finish the task as well as the number of input errors. © 2014 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.