1. Department of Geoinformatics, University of Seoul, 163, Seoulsiripdae-ro, Dongdaemun-gu, Seoul 02504, Republic of Korea
2. Technical Research Institute, Citus Co., Ltd., SJ Technoville, 278, Beotkkot-ro, Geumcheon-gu, Seoul 08511, Republic of Korea
3. Technical Research Institute, Newns Co., Ltd., 66, Gunpocheomdansaneop 2-ro, Gunpo-si 15880, Republic of Korea
4. Korea Gyeonggido Co., Ltd., 20, Pangyo-ro, Seongnam-si 13488, Republic of Korea