JEONG-WOO SON1,2, HEE-GUEN YOON2 AND SEONG-BAE PARK2
1Broadcasting and Telecommunications Media Research Laboratory Electronics and Telecommunications Research Institute
Daejeon, 305-700 Korea
E-mail: jwson@etri.re.kr
2School of Computer Science and Engineering
Kyungpook National University
Daegu, 702-701 Korea
E-mail: {hkyoon; sbpark}@sejong.knu.ac.kr