Orientational minimal redundancy wavelets: from edge detection to perception.
Natural images are complex but very structured objects and, in spite of its complexity, the sensory areas in the neocortex in mammals are able to devise learned strategies to encode them efficiently. How is this goal achieved? In this paper, we will discuss the multiscaling approach, which has been recently used to derive a redundancy reducing wavelet basis. This kind of representation can be statistically learned from the data and is optimally adapted for image coding; besides, it presents some remarkable features found in the visual pathway. We will show that the introduction of oriented wavelets is necessary to provide a complete description, which stresses the role of the wavelets as edge detectors.
Turiel
Antonio
A
Air Project--INRIA, Domaine de Voluceau BP105, Cedex 78153, Le Chesnay, France. antonio.turiel@inria.fr
Nadal
Jean-Pierre
JP
Parga
Néstor
N
D019295:Computational Biology; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008960:Models, Psychological; D014796:Visual Perception / Q000502:physiology*