1. Professor, Dept. of Geomatics, National Cheng Kung Univ., No. 1, University Rd., East Dist., Tainan 701, Taiwan. ORCID: .
2. Ph.D. Student, Dept. of Geomatics, National Cheng Kung Univ., No. 1, University Rd., East Dist., Tainan 701, Taiwan.
3. Assistant Professor, Dept. of Land Economics, National Chengchi Univ., No. 64, Sec. 2, Zhinan Rd., Wenshan Dist., Taipei 116, Taiwan (corresponding author).