Fig. 1.

(a) Typical animal vivarium cage-racks and the compact video acquisition system installed in the rack. (b) A close-up of the acquisition unit along with a 3D CAD drawing to highlight the close placement of the fisheye lens cameras to the cage. (c) An example image acquired by the system and the corresponding 3D pose estimate obtained from the image through the methods described in this work. The stick-figure is keyed as follows: the black circle denotes the tail, the blue × denotes the left-ear, the red * denotes right-ear, and the green square denotes the nose.