A toolkit for the dynamic study of air sacs in siamang and other elastic circular structures
Fig 2
A) Audio and video data were collected in the Jaderpark Tier- und Freizeitpark an der Nordsee, Germany. B) Air sacs were automatically tracked with two approaches: the lesser performing Hough Transformation (see sample here) versus the very good performing DeepLabCut tracking (see here sample) with Landau Circle Estimation (DLC+: see here for a sample). C) For a subset of the data, air sacs were tracked manually and compared to the automatically tracked radii. DLC estimated radii had a high correlation of r > 0.8 with the manually tracked radii. D) Acoustic parameters of two different kinds of calls were analyzed and related with air sac inflation as a proof of concept. E) All data and code are shared open access. The figure was created with BioRender. All images are photos by Wim Pouw and Mounia Kehy.