1. University of Tartu, Institute of Technology, iCV Research Group, Tartu, Estonia
2. Aalborg University, Visual Analysis of People Laboratory, Aalborg, Denmark
3. Tallinn University of Technology, School of Science, Division of Mathematics, Department of Cybernetics, Tallinn, Estonia
4. University of Tartu, Institute of Technology, iCV Research Group, Tartu, EstoniadHasan Kalyoncu University, Department of Electrical and Electronic Engineering, Gaziantep, Turkey