Journal ArticleDOI
The Visual Perception of Three-Dimensional Length
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TLDR
A set of 4 experiments evaluated observers' sensitivity to three-dimensional (3-D) length, using both discrimination and adjustment paradigms with computer-generated optical patterns and real objects viewed directly in a natural environment.Abstract:
A set of 4 experiments evaluated observers' sensitivity to three-dimensional (3-D) length, using both discrimination and adjustment paradigms with computer-generated optical patterns and real objects viewed directly in a natural environment. Although observers were highly sensitive to small differences in two-dimensional length for line segments presented in the frontoparallel plane, their discrimination thresholds increased by an order of magnitude when the line segments were presented at random orientations in 3-D space. There were also large failures of constancy, such that the perception of 3-D length varied systematically with viewing distance, even under full-cue conditions.read more
Citations
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Journal ArticleDOI
Embodied Perception and the Economy of Action
TL;DR: Perception informs people about the opportunities for action and their associated costs, and explicit awareness of spatial layout varies not only with relevant optical and ocular-motor variables, but also as a function of the costs associated with performing intended actions.
Journal ArticleDOI
The Role of Effort in Perceiving Distance
TL;DR: The present studies show that perceived egocentric distance increases when people are encumbered by wearing a heavy backpack or have completed a visual-motor adaptation that reduces the anticipated optic flow coinciding with walking effort.
Journal ArticleDOI
Perceiving distance: a role of effort and intent.
TL;DR: Perceiving egocentric distance is shown that, as the effort associated with walking increases, perceived distance increases if the perceiver intends to walk the extent, but not if the perception intends to throw.
Journal ArticleDOI
The visual perception of 3D shape
TL;DR: These findings suggest that the perceptual representation of 3D shape involves a relatively abstract data structure that is based primarily on qualitative properties that can be reliably determined from visual information.
Journal ArticleDOI
The visual perception of 3-D shape from multiple cues: are observers capable of perceiving metric structure?
James T. Todd,J. Farley Norman +1 more
TL;DR: Findings provide strong evidence that human observers do not have accurate perceptions of 3-D metric structure.
References
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Book
The Interpretation of Visual Motion
TL;DR: In this paper, the authors used the methodology of artificial intelligence to investigate the phenomena of visual motion perception: how the visual system constructs descriptions of the environment in terms of objects, their three-dimensional shape, and their motion through space, on the basis of the changing image that reaches the eye.
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Treatise on Physiological Optics
H. von Helmholtz,P. C. Southall +1 more
TL;DR: A composite thin film resistor is disclosed, including an electrically inert substrate upon which is deposited a nickel-chromium alloy thin film, and an overlying second thin film - which is initially deposited as metallic tantalum - which provides a very high degree of environmental protection with respect to the Ni-Cr film.
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Elemente der Psychophysik
TL;DR: The first attempt to establish an exact science of the functional relationship between mental and physical phenomena was made by as mentioned in this paper, who proposed a functional functional model for the relationship between physical and mental phenomena.
Journal ArticleDOI
The kinetic depth effect.
Hans Wallach,D. N. O'Connell +1 more
TL;DR: The problem of how three-dimensional form is perceived in spite of the fact that pertinent stimulation consists only in two-dimensional retinal images has been only partly solved.