organization objects and scenesmajumder/vispercep/mahdi.pdffigural simplicity • figures are...
TRANSCRIPT
![Page 1: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/1.jpg)
Organization Objects and ScenesChapter 6
Monday, May 13, 13
![Page 2: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/2.jpg)
Visual Interpolation
• Infer the nature of hidden parts from visible ones.
• Different kinds of Perceptual completion
• Parts of a surface are occluded
• Filling-in that occurs in the blind spot
Monday, May 13, 13
![Page 3: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/3.jpg)
Visual Completion
• Completion
• Amodal: local stimulation or sensory experience do not support the completed portion.
• Visual: completed portion is supported indirectly by visible information elsewhere in the image.
Monday, May 13, 13
![Page 4: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/4.jpg)
Theories
• Figural familiarity theories
• Figural simplicity theories
• Ecological constraint theories
Monday, May 13, 13
![Page 5: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/5.jpg)
Figural Familiarity
• Completing partly occluded figures according to the most frequently encountered shape.
• Problem:
• We seem able to complete objects that we have never seen before.
Monday, May 13, 13
![Page 6: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/6.jpg)
Figural Simplicity
• Figures are completed in the way that results in the simplest perceived figure.
• Gestalt psychologists (principle of pragnanz)
• The percept will be as good as the prevailing condition allow.
Monday, May 13, 13
![Page 7: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/7.jpg)
Ecological Constraint
• Relatability theory
• Edge discontinuities
• Amodally completed contours
• Forming a new perceptual unit
• Assigning positions in depth
Monday, May 13, 13
![Page 8: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/8.jpg)
Ecological Constraint
• Relatability theory
• Edge discontinuities
• Amodally completed contours
• Forming a new perceptual unit
• Assigning positions in depth
Monday, May 13, 13
![Page 9: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/9.jpg)
Illusory Contours
• Subjective contours
• Kanizsa triangle
• Generally accompanied by amodal completion of the inducing elements.
• Depend on the perception of occlusion.
Monday, May 13, 13
![Page 10: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/10.jpg)
Illusory Contours
• Subjective contours
• Kanizsa triangle
• Generally accompanied by amodal completion of the inducing elements.
• Depend on the perception of occlusion.
Monday, May 13, 13
![Page 11: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/11.jpg)
Illusory Contours
• Subjective contours
• Kanizsa triangle
• Generally accompanied by amodal completion of the inducing elements.
• Depend on the perception of occlusion.
Monday, May 13, 13
![Page 12: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/12.jpg)
Relation to Visual Completion
• The inducing elements are amodally completed behind the illusory figure.
Monday, May 13, 13
![Page 13: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/13.jpg)
Relation to Visual Completion
• Illusory contour configurations can be converted into examples of amodal completion.
• (Kellman) These two are just two different manifestations of the same underlying unit formation processes.
Monday, May 13, 13
![Page 14: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/14.jpg)
Perceived Transparency
• The perception of an object as being viewed through a closer translucent object.
• Perception of transparency
• Spatial and color conditions
• Heuristic assumptions
• color scissions or color splitting.
Monday, May 13, 13
![Page 15: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/15.jpg)
Figural Scission
• Perceptually splitting one single region into two figures.
• Interesting aspects:
• Underdetermination
• Illusory contours
• Completion
• Ambiguity
• Multistability
Monday, May 13, 13
![Page 16: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/16.jpg)
Relation Among Several Organization Phenomena
Monday, May 13, 13
![Page 17: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/17.jpg)
The Principle of Nonaccidentalness
• The visual system prefers the nonaccidental interpretation.
• Rejection-of-Coincidence principle (Irvine Rock)
Monday, May 13, 13
![Page 18: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/18.jpg)
The Principle of Nonaccidentalness
• The visual system prefers the nonaccidental interpretation.
• Rejection-of-Coincidence principle (Irvine Rock)
Monday, May 13, 13
![Page 19: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/19.jpg)
Multistability
• Alternating perception among different interpretations.
• Neural fatigue hypothesis
• Different patterns of neural activity.
• Perception corresponds with most active pattern.
• Neural fatigue causes domination of different patterns.
Monday, May 13, 13
![Page 20: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/20.jpg)
Connectionist Network Model
• Firing rate in two different neural network.
• The bistability of network
• Cooperation
• Competition
Monday, May 13, 13
![Page 21: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/21.jpg)
Neural Fatigue
• Mutual excitation
• Mutual inhibition
• Neural fatigue
Monday, May 13, 13
![Page 22: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/22.jpg)
Eye Fixations
• Eye Movement
• Local Information
• Subject’s intentionambiguous
unambiguous
Monday, May 13, 13
![Page 23: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/23.jpg)
The Rule of Instructions
• The alternative interpretations had to be represented within different internally cooperative subnetworks.
• Subnetworks had to compete with each other through mutual inhibition.
Monday, May 13, 13
![Page 24: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/24.jpg)
Perceiving Object Properties and partschapter 7
Monday, May 13, 13
![Page 25: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/25.jpg)
Shape
• Most complex of all visually perceivable properties.
• Combination of different attributes.
• Size
• Orientation
• Position
• No accepted theory of what shape is or how shape perception occurs.
Monday, May 13, 13
![Page 26: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/26.jpg)
Two Dimensional Figures
• 2D shapes presented at varying slants.
• Shape constancy declines by the degree of slants.
• Tendency to perceive the figures as the most symmetrical shape.
• Gestalt Principle of Pragnanz
• the percept will be as good as prevailing condition allow
Monday, May 13, 13
![Page 27: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/27.jpg)
Three Dimensional Objects
• More difficult than 2D figures.
• Shape constancy
• Perceive same object from different stationpoints
• Correlated with its identity
• Particular parts of object
Monday, May 13, 13
![Page 28: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/28.jpg)
Three Dimensional Objects
• More difficult than 2D figures.
• Shape constancy
• Perceive same object from different stationpoints
• Correlated with its identity
• Particular parts of object
Monday, May 13, 13
![Page 29: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/29.jpg)
Three Dimensional Objects
• More difficult than 2D figures.
• Shape constancy
• Perceive same object from different stationpoints
• Correlated with its identity
• Particular parts of object
Monday, May 13, 13
![Page 30: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/30.jpg)
Shape Illusions
• Ames room
• Shepard illusion
• Ponzo illusion
Monday, May 13, 13
![Page 31: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/31.jpg)
Orientation Constancy
• Orientation of object’s image on the retina
• Orientation of the head
• Oobject = Oimage + Ohead
Monday, May 13, 13
![Page 32: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/32.jpg)
Orientation Constancy
• Vestibular system
• Semicircular canals
• Utricle
• Saccule
• Visual system doesn’t rely entirely on vestibular information
• Effects on body
Monday, May 13, 13
![Page 33: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/33.jpg)
Orientation Illusions
• Visual information also affects orientation perceptions.
• Frames of Reference
• Rod-and-Frame effect
• Geometric illusions
• Zollner illusion
Monday, May 13, 13
![Page 34: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/34.jpg)
Orientation Illusions
• Visual information also affects orientation perceptions.
• Frames of Reference
• Rod-and-Frame effect
• Geometric illusions
• Zollner illusion
Monday, May 13, 13
![Page 35: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/35.jpg)
Orientation Illusions
• Visual information also affects orientation perceptions.
• Frames of Reference
• Rod-and-Frame effect
• Geometric illusions
• Zollner illusion
Monday, May 13, 13
![Page 36: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/36.jpg)
Position
• Different ways of perceiving object’s position• Relative to the observer’s body (egocentric position)
• Relative to other objects
• Polar coordinate
• Radial direction
• Distance
• Perception of Direction• Position of the object on the retina
• Direction in which the eyes are pointed
• Pobject = Pimage + Peye
Monday, May 13, 13
![Page 37: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/37.jpg)
Position Constancy
• DPobject = DPimage + DPeye
Monday, May 13, 13
![Page 38: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/38.jpg)
Position Constancy
• DPobject = DPimage + DPeye
Monday, May 13, 13
![Page 39: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/39.jpg)
Indirect Theories of Position Constancy
• Classical Theory (Helmholtz)
• Information about eye displacement
• Afferent theory
• Efferent theory
Monday, May 13, 13
![Page 40: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/40.jpg)
Direct Theories of Position Constancy
• Gibson (1966)
Monday, May 13, 13
![Page 41: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/41.jpg)
Position Illusions
• Contextual influence of a surrounding object
• Roelofs’ effect
Monday, May 13, 13
![Page 42: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/42.jpg)
Perceptual Adaptation
• Helmholtz’s experiment
• Kohler
• George Malcolm Stratton
• uinverting the retinal image
• the swinging of the filed
• Richard Held
• Amount of adamptation
Monday, May 13, 13
![Page 43: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/43.jpg)
Perceptual Adaptation
• Helmholtz’s experiment
• Kohler
• George Malcolm Stratton
• uinverting the retinal image
• the swinging of the filed
• Richard Held
• Amount of adamptation
Monday, May 13, 13
![Page 44: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/44.jpg)
Perceptual Adaptation
• Helmholtz’s experiment
• Kohler
• George Malcolm Stratton
• uinverting the retinal image
• the swinging of the filed
• Richard Held
• Amount of adamptation
Monday, May 13, 13
![Page 45: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/45.jpg)
Parts
• Cannot be captured by veridical perception of global properties such as size, shape ...
• Part is restricted portion of an object that has semi autonomous, objectlike status in visual perception
Monday, May 13, 13
![Page 46: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/46.jpg)
Evidence for Perception of Parts
• Linguistic evidence
• Phenomenological Demonstration
• Perceptual Experiment
Monday, May 13, 13
![Page 47: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/47.jpg)
Linguistic Evidence
• Linguistic Conventions of our culture
• Evidences against this idea
• Similarity across languages
• perceiving parts in objects we have never seen
Monday, May 13, 13
![Page 48: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/48.jpg)
Phenomenological Demonstration
Monday, May 13, 13
![Page 49: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/49.jpg)
Phenomenological Demonstration
Monday, May 13, 13
![Page 50: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/50.jpg)
Perceptual Experiment
• 2D non-sense figures.
• Even these novel figures perceived as having parts
Monday, May 13, 13
![Page 51: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/51.jpg)
Part Segmentation
• Two ways to divide an object into parts
• Shape primitive
• Boundary rule
Monday, May 13, 13
![Page 52: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/52.jpg)
Shape Primitives
• Decompose into relatively small set of atomic shapes
• Problems:
• Existence of contextual effects
• Some parts have subparts
• Multiple scale
• Grouping Principle
• There most be some well defined process
• What set of primitives
Monday, May 13, 13
![Page 53: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/53.jpg)
Boundary Rules
• Transversality regularity (Hoffman and Richard)
• Concave discontinuity rule
• Problem: having smooth transition between parts
• Deep Concavity rule
Monday, May 13, 13
![Page 54: Organization Objects and Scenesmajumder/vispercep/mahdi.pdfFigural Simplicity • Figures are completed in the way that results in the simplest perceived figure. • Gestalt psychologists](https://reader035.vdocument.in/reader035/viewer/2022062921/5f03fd7b7e708231d40bc5bd/html5/thumbnails/54.jpg)
Boundary Rules
• Transversality regularity (Hoffman and Richard)
• Concave discontinuity rule
• Problem: having smooth transition between parts
• Deep Concavity rule
Monday, May 13, 13