Fig. 7: Social interaction tracking.
From: Automated markerless pose estimation in freely moving macaques with OpenMonkeyStudio

a OpenMonkeyStudio extends to tracking social interactions in non-human primates. Here we demonstrate the feasibility of tracking two rhesus macaque while they individually move inside the enclosure, crossing paths fully. Colors indicate two individuals. Top frames depict the scene of two individuals in the cage during different timepoints. b Co-occurrence of actions in social macaques. We used 3D poses to classify their actions to illustrate the co-occurrence of actions of two macaques in log scale. c Proxemics characterizes the social space, e.g., how the location of a macaque is distributed with respect to the other. We transformed the 3D coordinate of the second macaque to the first macaque’s body centric coordinate system, i.e., 0◦ represents the first macaque’s facing direction. We use the polar histogram of the transformed coordinate to visualize the proxemics of macaques.