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2004

The world from a cat's perspective - statistics of natural videos

9 years 7 months ago
The world from a cat's perspective - statistics of natural videos
The mammalian visual system is one of the most intensively investigated sensory systems. However, our knowledge of the typical input it is operating on is surprisingly limited. To address this issue, we seek to learn about the natural visual environment and the world as seen by a cat. With a CCD camera attached to their head, cats explore several outdoor environments and videos of natural stimuli are recorded from the animals' perspective. The statistical analysis of these videos reveals several remarkable properties. First, we find an anisotropy of oriented contours with an enhanced occurrence of horizontal orientations, earlier described in the ``oblique effect'' as a predominance of the two cardinal orientations. Second, contrast is not elevated in the center of the images, suggesting different mechanisms of fixation point selection as compared to humans. Third, analyzing a sequence of images we find that the precise position of contours varies faster than their orien...
Belinda Y. Betsch, Wolfgang Einhäuser, Konrad
Added 16 Dec 2010
Updated 16 Dec 2010
Type Journal
Year 2004
Where BC
Authors Belinda Y. Betsch, Wolfgang Einhäuser, Konrad P. Körding, Peter König
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