1. National University of Laos (NUOL),Department of Computer Engineering and Informaton Technology,Vientiane
2. National University of Laos (NUOL),Department of Electronics and Telecommunication Engineering,Vientiane
3. Univ. Grenoble Alpes,Gipsa-Lab,Grenoble,France
4. Univ. Grenoble Alpes,LCIS,Grenoble,France
5. Univ. Claude Bernard Lyon 1,Dépt Mécanique,Lyon,France