1. Chonnam National University,Dept. of Intelligent Electronics and Computer Engineering,Gwangju,South Korea
2. Alps Electric Korea Co., Ltd.,Gwangju,South Korea
3. Oregon State University,United States of America
4. Korea Nazarene University,Dept. of IT Artificial Intelligence,Cheonan,South Korea
5. School of Electronics and Computer Engineering, Chonnam National University,Dept. of Intelligent Electronics and Computer Engineering,Gwangju,South Korea