Paper Info
Title
Expansion of Smartwatch Touch Interface from Touchscreen to Around Device Interface Using Infrared Line Image Sensors
Abstract
Touchscreen interaction has become a fundamental means of controlling mobile phones and smartwatches. However, the small form factor of a smartwatch limits the available interactive surface area. To overcome this limitation, we propose the expansion of the touch region of the screen to the back of the user's hand. We developed a touch module for sensing the touched finger position on the back of the hand using infrared (IR) line image sensors, based on the calibrated IR intensity and the maximum intensity region of an IR array. For complete touch-sensing solution, a gyroscope installed in the smartwatch is used to read the wrist gestures. The gyroscope incorporates a dynamic time warping gesture recognition algorithm for eliminating unintended touch inputs during the free motion of the wrist while wearing the smartwatch. The prototype of the developed sensing module was implemented in a commercial smartwatch, and it was confirmed that the sensed positional information of the finger when it was used to touch the back of the hand could be used to control the smartwatch graphical user interface. Our system not only affords a novel experience for smartwatch users, but also provides a basis for developing other useful interfaces.
Year
DOI
Venue
2015
10.3390/s150716642
SENSORS
Keywords
Field
DocType
smartwatch touch interface,infrared image sensor,around device interface
Gyroscope,Dynamic time warping,Gesture,Gesture recognition,Electronic engineering,Human–computer interaction,Graphical user interface,Artificial intelligence,Computer vision,Image sensor,Touchscreen,Engineering,Smartwatch
Journal
Volume
Issue
Citations 
15
7.0
5
PageRank 
References 
Authors
0.41
24
4
Name
Order
Citations
PageRank
Soo-Chul Lim1496.24
Jungsoon Shin2172.38
Seung-Chan Kim3939105.86
Joonah Park414112.37