Open Access

Phase-Based Binocular Perception of Motion in Depth: Cortical-Like Operators and Analog VLSI Architectures

  • Silvio P. Sabatini1Email author,
  • Fabio Solari1,
  • Paolo Cavalleri1 and
  • Giacomo Mario Bisio1
EURASIP Journal on Advances in Signal Processing20032003:983654

DOI: 10.1155/S1110865703302033

Received: 30 April 2002

Published: 18 June 2003

Abstract

We present a cortical-like strategy to obtain reliable estimates of the motions of objects in a scene toward/away from the observer (motion in depth), from local measurements of binocular parameters derived from direct comparison of the results of monocular spatiotemporal filtering operations performed on stereo image pairs. This approach is suitable for a hardware implementation, in which such parameters can be gained via a feedforward computation (i.e., collection, comparison, and punctual operations) on the outputs of the nodes of recurrent VLSI lattice networks, performing local computations. These networks act as efficient computational structures for embedded analog filtering operations in smart vision sensors. Extensive simulations on both synthetic and real-world image sequences prove the validity of the approach that allows to gain high-level information about the 3D structure of the scene, directly from sensorial data, without resorting to explicit scene reconstruction.

Keywords

cortical architectures phase-based dynamic stereoscopy motion processing Gabor filters lattice networks

Authors’ Affiliations

(1)
Department of Biophysical and Electronic Engineering, University of Genoa

Copyright

© Copyright © 2003 Hindawi Publishing Corporation 2003