Abstract

L. Itti, J. Braun, D. K. Lee, C. Koch, A Model of Early Visual Processing, In: Advances in Neural Information Processing Systems (NIPS*1997), Vol. 10, (M. I. Jordan, M. J. Kearns, S. A. Solla Ed.), pp. 173-179, Cambridge, MA:MIT Press, Aug 1998. [1997 oral acceptance rate: 4%] (Cited by 35)

Abstract: We propose a model for early visual processing in primates. The model consists of a population of linear spatial filters which interact through non-linear excitatory and inhibitory pooling. Statistical estimation theory is then used to derive human psychophysical thresholds from the responses of the entire population of units. The model is able to reproduce human thresholds for contrast and orientation discrimination tasks, and to predict contrast thresholds in the presence of masks of varying orientation and spatial frequency.

Themes: Computational Modeling, Human Psychophysics