Monocular Cues

Question 1

What are monocular cues?

Answer 1

-Geometric Perspective
-Retinal Image Size
-Aerial Perspective
-Motion Parallax

-Assist crew members with distance estimation and depth perception

Question 2

What is Geometric Perspective?

Answer 2

An object appears to have a different shape when it is viewed at varying distances and from different angles

Question 3

What are the types of geometric perspective?

Answer 3

-Linear perspective
-Apparent Foreshortening
-Vertical position in the field

Question 4

Linear Perspective

Answer 4

Parallel lines such as railroad tracks tend to converge as distance from the observer increases

Question 5

Apparent Foreshortening

Answer 5

The shape of an object or terrain feature appears elliptical (oval and narrow) when viewed from distance at both higher and lower altitudes

Question 6

Vertical Position in the Field

Answer 6

Objects or terrain features at greater distances from the observer appear higher on the horizon than those closer to the observer

Question 7

Retinal Image Size

Answer 7

An image focused on the retina is perceived by the brain to be of a given size

Question 8

Types of Retinal Imagine Size

Answer 8

-Known Size or Objects
-Increasing or Decreasing Size of Objects
-Terrestrial Association
-Overlapping Contours or Interposition Objects

Question 9

What is Aerial Perspective?

Answer 9

How an object’s clarity and its shadow are perceived by the brain and cues for estimating distance

Question 10

Factors of Aerial Perspective?

Answer 10

-Fading of Colors or Shades
-Loss of detail or Texture
-Position of Light Source and Direction of Shadow

Question 11

Motion Parallax

Answer 11

The apparent relative motion of stationary objects as viewed by an observer moving across the landscape