Martha gazes out the window of a moving train. Billboards, telephone poles, and other objects near the railway track move past Martha very quickly, while objects in the distance move slowly. This illustrates the depth cue of:
A) deletion and accretion.
B) optic flow.
C) cast shadows.
D) motion parallax.

Question

Quizplus · Accepted Answer

Motion parallax is the depth cue that explains why objects closer to the observer move faster across the visual field than objects that are further away. This is exactly what Martha experiences as she looks out of the train window.

Martha Gazes Out the Window of a Moving Train