A Neural Model of Distance-Dependent Percept of Object Size Constancy
Fig 1
”F” marks the fixation point;”P” marks the position of an object. Dgeom, indicates the distance from object, and I indicates interocular distance. The horizontal disparity, δ, is equal to the difference of the vergence angle, v, and the object angle, θ. δ = δr + δl, where δr and δl correspond to the disparity on the left and right retina respectively.