JUN-RUI WANG1, XIN XIE2 AND YU-CHI CHEN1,2,+
1Department of Computer Science and Engineering
Yuan Ze University
Taoyuan, 320 Taiwan
2Department of Computer Science and Information Engineering
National Taipei University of Technology
Taipei, 106 Taiwan
E-mail: {fs1076027; s1066052g}@mail.yzu.edu.tw; wycchen@ieee.org+