Some Determinants of Phenomenal Overlapping

Dinnerstein, Dorothy; Wertheimer, Michael

doi:10.2307/1419226

Cited by 45 publications

(33 citation statements)

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“…In a global theory the spatially extended context is used when completing a partly occluded object: the whole figure is important. Most global theories are modifications of the Gestalt notion of Pragnanz: the simplest percept will prevail (cf Dinner stein and Wertheimer 1957). For the stimuli discussed in this paper, the globally predicted percepts will have the highest degree of symmetry possible.…”

Section: The Primed-matching Paradigmmentioning

confidence: 95%

“…For example, in one paradigm, the experimenter presents subjects with pictures of what might be partly occluded objects, and subjects draw or describe any perceived completion (eg Boselie 1988;Boselie and Leeuwenberg 1986;Boselie and Wouterlood 1989;Buffart et al 1981Buffart et al , 1983Davi and Sambin 1992;Dinnerstein and Wertheimer 1957;Kellman and Shipley 1991;Wouterlood and Boselie 1992). There are two limitations to the draw/describe method.…”

Section: Previous Approachesmentioning

confidence: 99%

“…However, the fact that local solutions are computationally simpler to achieve does not mean that they are the solutions used by the human visual system, and the supporters of local theories of completion have not obtained objective evidence to support their theories. Previous researchers interested in the local/global nature of completion have limited themselves to asking subjects what partly occluded objects look like (eg Boselie 1988;Boselie and Leeuwenberg 1986;Buffart et al 1981Buffart et al , 1983Davi and Sambin 1992;Dinnerstein and Wertheimer 1957;Kellmann and Shipley 1991;Takeichi et al 1993;Wouterlood and Boselie 1992). The primed-matching paradigm affords us an objective paradigm to determine the relative contributions of local and global processes.…”

Section: The Primed-matching Paradigmmentioning

confidence: 99%

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Local and Global Minima in Visual Completion: Effects of Symmetry and Orientation

Sekuler

1994

Perception

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The visual information that specifies three-dimensional objects is often incomplete because objects occlude parts of themselves and other objects. Yet people rarely have difficulty perceiving complete, three-dimensional forms. Somehow the visual system seems to 'complete' partially specified objects. The perceptual processes underlying this seemingly effortless and immediate completion are poorly understood. Sekuler and Palmer designed in 1992 the primed-matching paradigm for the objective study of completion effects and their microgenesis. Results from the paradigm suggest that global processes may play a role early in perceptual completion, and that local processes dominate only under limited conditions of figural regularity and orientation. These results are not consistent with purely local or purely global theories of completion. The findings have implications for object perception and representation.

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Section: The Primed-matching Paradigmmentioning

confidence: 95%

Section: Previous Approachesmentioning

confidence: 99%

Section: The Primed-matching Paradigmmentioning

confidence: 99%

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Local and Global Minima in Visual Completion: Effects of Symmetry and Orientation

Sekuler

1994

Perception

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“…Several studies on occlusion patterns have been done by various researchers (cf Dinner stein and Wertheimer 1957;Michotte et al 1964;Buffart et al 1981;Rock 1983;Boselie 1988;Boselie and Wouterlood 1989;Kellman and Shipley 1991). A major distinction between the approaches of these authors is the distinction between so-called local and global theories.…”

Section: Introductionmentioning

confidence: 99%

Integrating Global and Local Aspects of Visual Occlusion

1994

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The phenomenon of visual occlusion has frequently been studied by means of twodimensional line drawings. These drawings may elicit various interpretations. Sometimes a mosaic of shapes is seen, sometimes a shape that partly occludes another shape. In the latter case, observers often have a clear idea about the form of the partly occluded shape. Local and global pattern aspects both seem to be decisive with respect to the preferred interpretation. An attempt is made to integrate these aspects by applying the global-minimum principle to the perceptual complexity of three distinct components of those pattern interpretations: (i) The internal structure, dealing with each of the shapes separately, (ii) the external structure, dealing with the positional relation between these shapes, and (iii) the virtual structure, dealing with the occluded parts of the shapes. The perceptual complexity of each of these three components can be expressed in terms of structural information. The hypothesis that the perceptually preferred interpretation is the one for which the total information load is minimal is tested on many patterns stemming from different studies on pattern completion.

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“…Very often we have a definite impression of what exactly is hidden behind the objects seen in front. This phenomenon has been given several names: interposition (Chapanis & McCleary, 1953), phenomenal overlapping (Dinnerstein & Wertheimer, 1957), amodal completion (Kanizsa, 1975), occlusion (Gibson, 1979), and figural completion (Buffart, Leeuwenberg, & Restle, 1981. Two questions raised by this phenomenon are: (1) When will one figure in front of another be seen, as opposed to two nonoverlapping figures in the same plane?…”

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confidence: 99%

Local versus global minima in visual pattern completion

Boselie

1988

Perception & Psychophysics

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Some Determinants of Phenomenal Overlapping

Cited by 45 publications

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Local and Global Minima in Visual Completion: Effects of Symmetry and Orientation

Local and Global Minima in Visual Completion: Effects of Symmetry and Orientation

Integrating Global and Local Aspects of Visual Occlusion

Local versus global minima in visual pattern completion

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