A Computational Model of the Analysis of Some First-Order and Second-Order Motion Patterns by Simple and Complex Cells

Although spatio-temporal gradient schemes are widely used in the computation of image motion, algorithms are ill conditioned for particular classes of input. This paper addresses this problem. Motion is computed as the space-time direction in which the difference in image illuminance from the local...

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Bibliographic Details
Published in:Proceedings of the Royal Society. B, Biological sciences Biological sciences, 1992-12, Vol.250 (1329), p.297-306
Main Authors: Johnston, A., McOwan, P. W., Buxton, Hilary
Format: Article
Language:English
Subjects:
Algorithms
Anatomical correlates of behavior
Behavioral psychophysiology
Biological and medical sciences
Flow velocity
Fundamental and applied biological sciences. Psychology
Humans
Kinetics
Mathematics
Modeling
Models, Neurological
Motion Perception
Neurons
Pixels
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Space Perception
Spacetime
Visual cortex
Visual Cortex - cytology
Visual Cortex - physiology
Visual perception
Visual system
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Summary:Although spatio-temporal gradient schemes are widely used in the computation of image motion, algorithms are ill conditioned for particular classes of input. This paper addresses this problem. Motion is computed as the space-time direction in which the difference in image illuminance from the local mean is conserved. This method can reliably detect motion in first-order and some second-order motion stimuli. Components of the model can be identified with directionally asymmetric and directionally selective simple cells. A stage in which we compute spatial and temporal derivatives of the difference between image illuminance and the local mean illuminance using a truncated Taylor series gives rise to a phase-invariant output reminiscent of the response of complex cells.
ISSN:0962-8452
1471-2954
DOI:10.1098/rspb.1992.0162