Results 1 - 10 of 204

The Bayesian image retrieval system, PicHunter: Theory, implementation, and psychophysical experiments

by Ingemar J. Cox, Matt L. Miller, Thomas P. Minka, Thomas V. Papathomas, Peter N. Yianilos - IEEE TRANSACTIONS ON IMAGE PROCESSING , 2000
"... This paper presents the theory, design principles, implementation, and performance results of PicHunter, a prototype content-based image retrieval (CBIR) system that has been developed over the past three years. In addition, this document presents the rationale, design, and results of psychophysica ..."
Abstract - Cited by 226 (2 self) - Add to MetaCart
of psychophysical experiments that were conducted to address some key issues that arose during PicHunter’s development. The PicHunter project makes four primary contributions to research on content-based image retrieval. First, PicHunter represents a simple instance of a general Bayesian framework we describe

Measurement and modeling of depth cue combination: in defense of weak fusion

by Michael S. Landy, Laurence T. Maloney, Elizabeth B. Johnston, Mark Young - Vision Research , 1995
"... Various visual cues provide information about depth and shape in a scene. When several of these cues are simultaneously available in a single location in the scene, the visual system attempts to combine them. In this paper, we discuss three key issues relevant to the experimental analysis of depth c ..."
Abstract - Cited by 213 (23 self) - Add to MetaCart
Various visual cues provide information about depth and shape in a scene. When several of these cues are simultaneously available in a single location in the scene, the visual system attempts to combine them. In this paper, we discuss three key issues relevant to the experimental analysis of depth

On the relationship of the psychological to the physical in psychophysics

by Louis Narens, Rainer Mausfeld - Psychological Review , 1992
"... This article presents a theory of the relationship of the psychological and the physical and uses it to formulate a new kind of meaningfulness principle for psychophysical application. This new principle calls into question the psychological relevance of many kinds of quantitative psychophysical rel ..."
Abstract - Cited by 4 (1 self) - Add to MetaCart
This article presents a theory of the relationship of the psychological and the physical and uses it to formulate a new kind of meaningfulness principle for psychophysical application. This new principle calls into question the psychological relevance of many kinds of quantitative psychophysical

Physics of Psychophysics: it is critical to sense

by Mauro Copelli, Laboratório Física, Teórica Computacional , 2006
"... Abstract. It has been known for about a century that psychophysical response curves (perception of a given physical stimulus vs. stimulus intensity) have a large dynamic range: many decades of stimulus intensity can be appropriately discriminated before saturation. This is in stark contrast with the ..."
Abstract - Cited by 1 (1 self) - Add to MetaCart
Abstract. It has been known for about a century that psychophysical response curves (perception of a given physical stimulus vs. stimulus intensity) have a large dynamic range: many decades of stimulus intensity can be appropriately discriminated before saturation. This is in stark contrast

PSYCHOPHYSICS IN MAP PERCEPTION

by Hadas Schwartz-chassidim, Joachim Meyer
"... The choice of display parameters for digital maps (e.g., the scale used) depends on the impression the map will generate in the eyes of the viewer. One relevant property of the map is the information load it generates, expressed as the map's perceived density. The number of displayed objects do ..."
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The choice of display parameters for digital maps (e.g., the scale used) depends on the impression the map will generate in the eyes of the viewer. One relevant property of the map is the information load it generates, expressed as the map's perceived density. The number of displayed objects

Perception & Psychophysics

by unknown authors
"... Intrinsic stimulus characteristics alone fail to determine what is easy or hard to perceive; this depends on the task as well. It is easy, for instance, to perceive the geometrical structure in Figure 1A due to its saliency, but this very saliency makes it difficult to identify the letter E in the f ..."
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in the figure. This elementary observation may be relevant in a number of situations in which fast and correct reactions are required. Traffic signs, as well as warning displays in power plant control rooms or cockpits, put emphasis on sym-bols by surrounding them with attention-grabbing frames. Yet the effect

Decomposing biological motion: A framework for analysis and synthesis of human gait patterns.

by Nikolaus F Troje - Journal of Vision, , 2002
"... Biological motion contains information about the identity of an agent as well as about his or her actions, intentions, and emotions. The human visual system is highly sensitive to biological motion and capable of extracting socially relevant information from it. Here we investigate the question of ..."
Abstract - Cited by 159 (20 self) - Add to MetaCart
Biological motion contains information about the identity of an agent as well as about his or her actions, intentions, and emotions. The human visual system is highly sensitive to biological motion and capable of extracting socially relevant information from it. Here we investigate the question

Parts of Visual Form: Computational Aspects

by Kaleem Siddiqi, Student Member, Benjamin B. Kimia - IEEE Transactions on Pattern Analysis and Machine Intelligence , 1995
"... Underlying recognition is an organization of objects and their parts into classes and hierarchies. A representation of parts for recognition requires that they be invariant to rigid transformations, robust in the presence of occlusions, stable with changes in viewing geometry, and be arranged in a h ..."
Abstract - Cited by 92 (7 self) - Add to MetaCart
hierarchy. These constraints are captured in a general framework using notions of a part-line and a partitioning scheme. A proposed general principle of "form from function" motivates a particular partitioning scheme involving two types of parts, neck-based and limb-based, whose psychophysical

Attention alters appearance

by Marisa Carrasco, Sam Ling, Sarah Read - Nat. Neurosci , 2004
"... Does attention alter appearance? This critical issue, debated for over a century, remains unsettled. From psychophysical evidence that covert attention affects early vision—it enhances contrast sensitivity and spatial resolution—and from neurophysiological evidence that attention increases the neuro ..."
Abstract - Cited by 134 (22 self) - Add to MetaCart
Does attention alter appearance? This critical issue, debated for over a century, remains unsettled. From psychophysical evidence that covert attention affects early vision—it enhances contrast sensitivity and spatial resolution—and from neurophysiological evidence that attention increases

Psychophysical detection testing with bayesian active learning

by Jacob R. Gardner, Xinyu Song, Kilian Q. Weinberger, Dennis Barbour, John P. Cunningham , 2015
"... Psychophysical detection tests are ubiquitous in the study of human sensation and the diagno-sis and treatment of virtually all sensory im-pairments. In many of these settings, the goal is to recover, from a series of binary observa-tions from a human subject, the latent function that describes the ..."
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Psychophysical detection tests are ubiquitous in the study of human sensation and the diagno-sis and treatment of virtually all sensory im-pairments. In many of these settings, the goal is to recover, from a series of binary observa-tions from a human subject, the latent function that describes
Results 1 - 10 of 204