Perceptual Organization. And Optical Illusions. The Constructist View. Brain constructs a perception out of a great many individual sensations Perception = sum of sensations. The Gestalt Veiw. Brain immediately receive sensation as a whole
And Optical Illusions
Grouping nearby figures together.
Columns or Rows?
Columns or Rows?
Figures similar to each other are grouped together.
Columns of circles & squares
Rows or Columns or Both
Preference for smooth contours/patterns rather than abrupt discontinuous ones.
Do you see line ab and line cd OR do you see line ac and line db?
Fill in gaps to create whole objects and preferences for closed rather than open objects.
PAC MEN OR A TRIANGLE?
Perceived linked objects as a single item.
Three separate items, not 6 circles and 3 lines.
Fear of crawling over cliff indicates the ability to see depth.
Fusion: the brain bring two images together.
Monocular Cue #1-Relative Size:objects that are known to be the same size will convey depth if one is smaller than the other
Size of retinal image is larger for objects closer.
Size of retinal image is smaller for far objects.
Blue circle is closer because it overlaps the red circle.
Parallel lines converge with distance.
Monocular Cue #4-Aerial Perspective (relative clarity):distant objects tend to look less sharp due to atmosphere
Distant objects appear blue due to scattering of blue light in atmosphere.
Monocular Cue #5-Relative Brightness / Texture: vivid details become less evident and less apparent
Brighter areas seem closer, dimmer areas seem distant.
Monocular Cue #6-Relative Height:objects higher are perceived as being more distant
Above the horizon, objects lower seem distant and objects higher seem closer.
Objects higher in the visual field seem farther away.
Objects lower in the visual field seem closer.