Neural Architecture based on Double Opponent Cells

5 Neural Architecture based on Double Opponent Cells 

Dufort and Lumsden (1991) proposed a model for color categorization and color constancy. In their model, color constancy is achieved by using the output from double opponent cells 

The output from the red-green and the blue-yellow color opponent cells defines a two-dimensional coordinate system. A cell that responds maximally to red light can be constructed using the outputs from the red-green as well as the blue-yellow channel. Let x be the output of the red-green channel and let y be the output of the blue-yellow channel. A cell, which computes its output z according to 

Blue-Yellow Color Opponency Center Only 

Short-Wave Cone Receptor ( ) Ganglion Cell — Inhibitory Synapse 

---