Object Detection in Natural Scenes by Feedback
Current models of object recognition generally assume a bottom-up process within a hierarchy of stages. As an alternative, we present a top-down modulation of the processed stimulus information to allow a goal-directed detection of objects within natural scenes. Our procedure has its origin in current findings of research in attention which suggest that feedback enhances cells in a feature-specific manner. We show that feedback allows discrimination of a target object by allocation of attentional resources.
KeywordsObject Recognition Object Detection Spatial Attention Natural Scene Target Template
Unable to display preview. Download preview PDF.
- 7.Hamker, F.H.: How does the ventral pathway contribute to spatial attention and the planning of eye movements? Proceedings of the 4th Workshop Dynamic Perception, 14-15 November 2002, Bochum, Germany, to appear.Google Scholar
- 9.Chelazzi, L., Duncan, J., Miller, E. K., Desimone, R.: Responses of neurons in inferior temporal cortex during memory-guided visual search. J. Neurophysiol. 80 (1998) 2918–2940.Google Scholar
- 10.Motter, B.C.: Neural correlates of attentive selection for color or luminance in extrastriate area V4. J. Neurosci. 14 (1994) 2178–2189.Google Scholar
- 12.Li, F.-F., VanRullen, R., Koch, C., Perona, P.: Rapid natural scene categorization in the near absence of attention. Proc Natl Acad Sci USA 99 (2002) 9596–9601.Google Scholar
- 13.Sheinberg, D.L., Logothetis, N.K.: Noticing familiar objects in real world scenes: the role of temporal cortical neurons in natural vision. J Neurosci. 21 (2001) 1340–1350.Google Scholar