CEDI:  A neural model of colour vision, with applications to image processing and classification

Author(s): Carpenter, G.A. | Chelian, S.F. |

Year: 2005

Citation: AIC05: 10th Congress of the International Colour Association, May 9-13, 2005, Granada, Spain.

Abstract: The CEDI (Contrast Enhance / Discount the Illuminant) system models a cascade of primate color vision cells: retinal ganglion, thalamic single opponent, and two types of cortical double opponents (Figure 1). A unified model formalism derived from psychophysical axioms produces transparent network dynamics and principled parameter settings. CEDI fits an array of physiological data for each cell class, and makes testable experimental predictions. Properties of the feature vector components in CEDI are compared with properties of corresponding components in the Neural Fusion Module, and computational capabilities of these two models are examined on satellite imagery tasks. The satellite benchmark testbed demonstrates the marginal computational utility of each of the four CEDI model cell types. This analysis is carried out in the context of a large-scale research program that is integrating cognitive and neural systems derived from analyses of vision and recognition to produce both biological models and technological applications.

Topics: Biological Vision, Image Analysis, Models: Other,

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