Movie 1.

First segment: A swarm reconstruction device within a temperature controlled box. A swarm is hung from a board which is suspended by a scale. Three space heaters an two window air conditioners are installed in the corners of the box. A camera and a backlight are rotated around the swarm cluster in order to construct 3D axisymetric models of the cluster's shape every 4 minutes while the ambient temperature is systematically varied. The backlight is switched off when not in use to avoid attracting bees away from the cluster. Second segment: Images recorded from 40 camera angles as as the camera and backlight rotate around the swarm cluster. Computer vision tools are used to extract a silhouette of the cluster at each angle which is later used to estimate the cluster's 3D shape.