TY - JOUR
AU - Andersen, George J.
AB - An assumption central to the study of 3-dimensional (3-D) shape perception is that sufficient information must be present to detect a 3-D surface. Three experiments were conducted to determine the variables important for the detection of 3-D surfaces from optic flow. Observers were presented with optic-flow displays simulating either points positioned on a corrugated 3-D surface or points randomly positioned within a 3-D volume. The task of the observer was to indicate whether the display appeared to be a 3-D surface. An increase in frequency of the corrugation for simple (single-frequency corrugation) surfaces resulted in a decrease in surface detection. Detection performance increased with an increase in density and amplitude for both simple and complex (multiple-frequency corrugation) surfaces. An analysis of the deformation of the displays suggests that 3-D surface detection may be based on the summed absolute value of the 2 shear components of deformation. 
TI - Detection of Smooth Three-Dimensional Surfaces From Optic Flow
JO - Journal of Experimental Psychology Human Perception & Performance
DO - 10.1037/0096-1523.22.4.945
DA - 1996-08-01
UR - https://www.deepdyve.com/lp/american-psychological-association/detection-of-smooth-three-dimensional-surfaces-from-optic-flow-KxsRSFo7AP
SP - 945
EP - 957
VL - 22
IS - 4
DP - DeepDyve
ER -