Getting round with fewer views: The effect of a small number of selectable viewpoints on solving transparent knots

For many practical applications that use camera images and active viewpoint selection to create telepresence it is important to restrict the number of selectable viewpoints. Previous experiments showed that the Delft Virtual Window System can be adapted to work with a small number of selectable viewpoints. For simple scenes and a connectivity task, only three viewpoints proved sufficient, although mot-c viewpoints can compensate for low resolution and contrast. The presented experiment shows that for complex scenes consisting of knots more viewpoints result in better judgements (up to 90% correct) in less time.