The images in both sets were obtained with Olympus colour digital camera which has the spatial resolution of 1600 x 1200 pixels. The camera was suspended under a bracket mounted on a tripod. A hyperbolic mirror (H3) provided by the Omnivision Project of the Centre of Machine Perception FELK CVUT, Czech Republic, was fixed centrally under the camera at the distance of about 200 mm. This mirror provides full 360 degrees (panoramic) view of the surrounding scene.