3D tracking of animals in the field using rotational stereo videography

作者：de Margerie Emmanuel^*; Simonneau Manon; Caudal Jean Pierre; Houdelier Cecilia; Lumineau Sophie

来源：Journal of Experimental Biology, 2015, 218(16): 2496-2504.

DOI：10.1242/jeb.118422

• Animal tracking
• Stereo video
• Spatial behaviour
• Movement ecology
• Flight kinematics

We describe a method for tracking the path of animals in the field, based on stereo videography and aiming-angle measurements, combined in a single, rotational device. In open environments, this technique has the potential to extract multiple 3D positions per second, with a spatial uncertainty of <1 m (rms) within 300 m of the observer, and <0.1 m (rms) within 100 m of the observer, in all directions. The tracking device is transportable and operated by a single observer, and does not involve any animal tagging. As a video of the moving animal is recorded, track data can easily be completed with behavioural data. We present a prototype device based on accessible components that achieves about 70% of the theoretical maximal range. We show examples of bird ground and flight tracks, and discuss the strengths and limits of the method, compared with existing fine-scale (e.g. fixed-camera stereo videography) and large-scale tracking methods (e.g. GPS tracking).

• 出版日期2015-8