[1] Nguyen Tat Thanh Univ, Nguyen Tat Thanh Inst Hitechnol, Ho Chi Minh City 702000, Vietnam
[2] Hochiminh City Univ Nat Resources & Environm, Ho Chi Minh City 705000, Vietnam
[3] Vietnam Acad Sci & Technol, Inst Appl Mat Sci, Hanoi 701000, Vietnam
[4] Pukyong Natl Univ, Dept Imaging Syst Engn, Busan 608737, South Korea