Exam 2 A Flashcards Preview

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Flashcards in Exam 2 A Deck (22):
1

Depth cues can be what?

Stereoscopic or Monoscopic

2

Distance to objects can be perceived monoscopically on the basis of what?

Relative size of objects, hidden objects, shadows, focus distance

3

What is a fundamental importance in photogrammetry?

Stereoscopic depth perception

4

Stereoscopic depth perception requires what?

Binocular vision

5

When both eyes fixate on an object, what gives a sense of depth?

The two optical axes intersect

6

Angle of intersection is called what?

Parallactic angle

7

The blank the parallactic angle, the blank the object?

Larger, Nearer

8

The apparent depth to the object can be changed by what?

Changing the spacing of the images

9

Closer images equals what?

Larger parallactic angle

10

Larger parallactic angle equals what

Nearer object

11

Three dimensional representation is called what?

Stereo model

12

The overlapping pair of photographs is called what?

Stereo pair

13

What are three types of stereoscopes?

Pocket, mirror, zoom

14

Principal points and their conjugates must lie on what?

A straight line, the flightline

15

Y parallax is said to exist when what?

Corresponding images are not on the line parallel with the eye base

16

Y parallax can be caused by what three things?

Improper alignment, difference in flying height, or tilt

17

The airbase flying height ratio is primarily a function of what?

Focal length

18

Photograph taken with a 3.5 focal length camera will appear blank than with a 6 inch focal length camera

More exaggerated

19

The change in position of an image from one photograph to the next is caused by what?

The aircraft motion

20

The parallax of a point is directly related to what?

It’s elevation

21

Parallax can be quantified as what?

The difference in x-coordinate’s

22

What two things must lie along the line?

Principal points and conjugates