TITLE:
A Robust Alternative Virtual Key Input Scheme for Virtual Keyboard Systems
AUTHORS:
Prince Owusu-Agyeman, Wei Xie, Yao Yeboah
KEYWORDS:
Virtual Input, Shadow-Based Input, Input Robustication, Virtual Key Input
JOURNAL NAME:
Journal of Computer and Communications,
Vol.4 No.4,
April
20,
2016
ABSTRACT: Towards virtual keyboard design and realization, the work in this
paper presents a robust key input method for deployment in virtual keyboard
systems. The proposed scheme harnesses the information contained within shadows
towards robustifying virtual key input. This scheme allows for input efficiency
to be guaranteed in situations of relatively lower illumination, a core challenge associated with
virtual keyboards. Contributions of the paper are two-fold. Firstly the paper
pre-sents an approach towards effectively applying shadow information towards
robustifying virtual key input systems; Secondly, through morphological
operations, the performance of this input method is boosted by means of
effectively alleviating noise and its impacts on overall algorithm performance,
while highlighting the necessary features towards an efficient performance.
While previous contributions have followed a similar trend, the contribution of
this paper stresses on the intensification and improvement of both shadow and
finger-tip feature highlighting schemes towards overall performance
improvement. Experimental results presented in the paper demon-strate the
efficiency and robustness of the approach. The attained results suggest that
the scheme is capable of attaining high performances in terms of accuracy while
being capable of addressing false touch situations.