Retraction to: Multimedia Tools and Applications (2019) 78:28805-28814
https://doi.org/10.1007/s11042-018-6630-0
The Editor-in-Chief and the publisher have retracted this article. This article was submitted to be part of a guest-edited issue. An investigation concluded that the editorial process of this guest-edited issue was compromised by a third party and that the peer review process has been manipulated. Based on the investigation's findings the Editor-in-Chief therefore no longer has confidence in the results and conclusions of this article.
The Publisher has not been able to obtain a current email address for Si-hwan Cha and Do-Hyun Myung. Bong-Jo Choo, Hae-Jong Joo and Bong-Soo Kim. have not responded to correspondence regarding this retraction.