JurisKlonovs is a PhD student in the Department of Mechanical andManufacturing Engineering at Aalborg University Copenhagen, Denmark.MohammadA. Haque is a PhD Fellow in the Department of Architecture, Design and MediaTechnology at Aalborg University, Aalborg, Denmark.Dr. VolkerKrueger is a Professor and Head of the Robotics, Vision and MachineIntelligence group in the Department of Mechanical and ManufacturingEngineering at Aalborg University Copenhagen, Denmark. His other publicationsinclude the Springer title VisualAnalysis of Humans – Looking at People.Dr. KamalNasrollahi is an Associate Professor in Computer Vision in the Department of Architecture, Design and MediaTechnology at Aalborg University, Aalborg, Denmark.Dr. KarenAndersen-Ranberg is an Associate Professor in the Danish Aging Research Center at the University ofSouthern Denmark, Odense, Denmark. She is also a Specialist Consultant inGeriatrics and Internal Medicine at Odense University Hospital.Dr.Thomas B. Moeslund is a Professor in the Department of Architecture, Design and MediaTechnology at Aalborg University, Denmark, where he serves as Headof Media Technology, and Head of the Visual Analysis of People Lab. His otherpublications include the Springer titles ComputerVision in Sports, Introduction toVideo and Image Processing, and VisualAnalysis of Humans – Looking at People.Dr.Erika G. Spaich is an Associate Professorin the Department of HealthScience and Technology at Aalborg University, Aalborg, Denmark.