Figure 8.

Model predictions for distance and extent. (a) Perceived distance (Z_v) measured during binocular viewing of stakes positioned at various physical distances (Z_v) to the observer. Data are from Foley et al. (2004). Lines are fits by the models of Foley (green) and perspective space (red). (b) Perceived distance measured during binocular viewing. (c, d, e, and f) Reported extents in four experimental conditions are plotted against extents predicted by the perspective space model. Red lines indicate perfect predictions.