Depth Perception Obstruction, Introduction

Depth Perception: Ability in Unobstructed vs. Obstructed Situations

Introduction:
The ability to gauge the distance of an object accurately is a characteristic most common of higher-order animals. Combining several types of depth cues, this ability of sight is known as depth perception. Stereopsis is a feature of binocular vision that works by allowing a person or animal to see the same object from two slightly different angles and subsequently be able to determine (triangulate) its distance away. The monocular concept of relative size allows humans to determine the closeness of objects based on their size relative to a predetermined expectation of the object’s size rooted in past experiences of the individual. It is my understanding from these explanations that this form of monocular depth perception is less accurate than the above mentioned binocular [stereopsis] method of determining depth perception. Therefore, if test subjects are subjected to depth perception tests using one eye versus two, I expect that they will not be as able to accurately determine the correct point at which both vertical beams are equidistant from their person.