@dimstudi0 Cameras and analytics are NOT needed to know when students are sitting with crossed arms and blank faces for the whole lecture... and indeed there is not much one can do with this knowledge... sometimes not even sword fights in the classroom will change their facial expressions.
Me and @SuperHeroBooth are presenting our Demo the Multimodal Tutor Kit at #LAK19 demonstrating how to collect and annotate #multimodal data. Vote for us!
@Salentina_in_NL I would say being curious and wanting to reveal some truth about your topic is the only thing needed. If you have that everything else will align.
If you do not have that, then it will be a hard work and many many skills will be required.