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Monocular Cues to Three-Dimensional Space, Combining Depth Cues, Binocular Vision and Stereopsis.
Typology: Lecture notes
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Chapter 6 Space Perception and Binocular Vision
Monocular Cues to Three-Dimensional Space
Binocular Vision and Stereopsis
Combining Depth Cues
Development of Binocular Vision and Stereopsis
Introduction
Euclidian geometry: Parallel lines remain parallel as they are extended in space.
Introduction
Notice that images projected onto the retina are non-Euclidean!
Introduction
Probability summation: The increased probability of detecting a stimulus from having two or more samples.
Introduction
Binocular summation: The combination (or “summation”) of signals from each eye in ways that make performance on many tasks better with both eyes than with either eye alone.
The two retinal images of a three- dimensional world are not the same!
Introduction
Binocular disparity: The differences between the two retinal images of the same scene.
Introduction
Depth cue: Information about the third dimension (depth) of visual space.
Monocular depth cue: A depth cue that is available even when the world is viewed with one eye alone.
Binocular depth cue: A depth cue that relies on information from both eyes.
Figure 6.3 Comparing rabbit and human visual fields (Part 2)
Figure 6.5 Occlusion makes it easy to infer relative position in depth
Figure 6.6 Figure 6.5 could be an “accidental” view of the pieces shown here in (a). It is much more likely, however, that it is a generic view of circle, square, and triangle, as shown in ( b )
Monocular Cues to Three-Dimensional Space
Relative size: A comparison of size between items without knowing the absolute size of either one.
Figure 6.7 This is a photograph of a collection of Plasticine balls that are resting on the same surface at the same distance from the camera