Flashcards in Exam 2 A Deck (22):
Depth cues can be what?
Stereoscopic or Monoscopic
Distance to objects can be perceived monoscopically on the basis of what?
Relative size of objects, hidden objects, shadows, focus distance
What is a fundamental importance in photogrammetry?
Stereoscopic depth perception
Stereoscopic depth perception requires what?
When both eyes fixate on an object, what gives a sense of depth?
The two optical axes intersect
Angle of intersection is called what?
The blank the parallactic angle, the blank the object?
The apparent depth to the object can be changed by what?
Changing the spacing of the images
Closer images equals what?
Larger parallactic angle
Larger parallactic angle equals what
Three dimensional representation is called what?
The overlapping pair of photographs is called what?
What are three types of stereoscopes?
Pocket, mirror, zoom
Principal points and their conjugates must lie on what?
A straight line, the flightline
Y parallax is said to exist when what?
Corresponding images are not on the line parallel with the eye base
Y parallax can be caused by what three things?
Improper alignment, difference in flying height, or tilt
The airbase flying height ratio is primarily a function of what?
Photograph taken with a 3.5 focal length camera will appear blank than with a 6 inch focal length camera
The change in position of an image from one photograph to the next is caused by what?
The aircraft motion
The parallax of a point is directly related to what?
Parallax can be quantified as what?
The difference in x-coordinate’s