Affiliation: | a Dept. of Computer and Communication, Kun Shan University, No. 949, Da-Wan Rd., Yung-Kang Dist., Tainan City 710, Taiwanb Graduate Institute of Electro-Optical Engineering, National Kaohsiung First University of Science and Technology, No.2, Jhuoyue Rd. Nanzih Dist. Kaohsiung City 811, Taiwan |