Psychophysics with junctions in real images.

Abstract:

:Junctions, formed at the intersection of image contours, are thought to play an important and early role in vision. The interest in junctions can be attributed in part to the notion that they are local image features that are easy to detect but that nonetheless provide valuable information about important events in the world, such as occlusion and transparency. Here I test the notion that there are locally defined junctions in real images that might be detected with simple, early visual mechanisms. Human observers were used as a tool to measure the visual information available in local regions of real images. One set of observers was made to label all the points in a set of real images where one edge occluded another. A second set of observers was presented with variable-size circular subregions of these images, and was asked to judge whether the regions were centered on an occlusion point. This task is easy if junctions are visible, but I found performance to be poor for small regions, not approaching ceiling levels until observers were given fairly large (approximately 50 pixels in diameter) regions over which to make the judgment. Control experiments ruled out the possibility that the effects are just due to junctions at multiple scales. Experiments reported here suggest that, although some junctions in real images are locally defined and can be detected with simple mechanisms, a substantial fraction necessitate the use of more complex and global processes. This raises the possibility that junctions in such cases may not be detected prior to scene interpretation.

journal_name

Perception

journal_title

Perception

authors

McDermott J

doi

10.1068/p5265

keywords:

subject

Has Abstract

pub_date

2004-01-01 00:00:00

pages

1101-27

issue

9

eissn

0301-0066

issn

1468-4233

journal_volume

33

pub_type

杂志文章
  • Sport expertise: the role of precise timing of verbal-analytical engagement and the ability to detect visual cues.

    abstract::This study proposed that relative timing of high-alpha (10-12 Hz) left (T3) and right (T4) cortical temporal electroencephalographic (EEG) power levels would differentiate performance groups in a reactive sport such as cricket batting. The time course of EEG event-related alpha synchronisation (ERS) and desynchronisat...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p7530

    authors: Taliep MS,John L

    更新日期:2014-01-01 00:00:00

  • Interpolation of illusory pain in the human somatosensory system.

    abstract::Three coins are lined up with the middle coin at room temperature and flanking coins cooled down to 4 degrees C. If digits 2 and 4 are placed on the outer coins and digit 3 on the middle coin, the latter also feels cold; a striking example of perceptual filling in of temperature. We show that if digits 2 and 4 are pla...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p7019

    authors: Seckel E,Krause B,Ramachandran VS

    更新日期:2012-01-01 00:00:00

  • Discriminating audiovisual speed: optimal integration of speed defaults to probability summation when component reliabilities diverge.

    abstract::We investigated audiovisual speed perception to test the maximum-likelihood-estimation (MLE) model of multisensory integration. According to MLE, audiovisual speed perception will be based on a weighted average of visual and auditory speed estimates, with each component weighted by its inverse variance, a statisticall...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p6261

    authors: Bentvelzen A,Leung J,Alais D

    更新日期:2009-01-01 00:00:00

  • Visualization of compound scenes.

    abstract::Subjects listened to descriptions of familiar objects and the spatial relations between them and attempted to visualize these objects as a composite scene. The time taken to generate a composite visual image, measured from the end of the verbal description, increased dramatically and linearly with the number of object...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p070129

    authors: Beech JR,Allport DA

    更新日期:1978-01-01 00:00:00

  • A new random-dot stereo illusion and its application to the Anstis-Howard-Rogers effect.

    abstract::When the dynamic visual noise of an untuned television set is viewed with image defocusing (positive lenses) and with a narrow vertical obstruction partially blocking the pupil of one eye, the video 'snow' seems to separate into two stable surfaces at different depths, divided by a vertical discontinuity. The main fea...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p130547

    authors: Enright JT

    更新日期:1984-01-01 00:00:00

  • Global visual completion of quasi-regular shapes.

    abstract::The topic of amodal completion has often been investigated by using partly occluded shapes that are regular. In research that has typically been done with displays such as these regular shapes, it has been shown that global aspects of a shape can determine completion. To see how robust these global influences in the c...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p3374

    authors: de Wit TC,van Lier RJ

    更新日期:2002-01-01 00:00:00

  • Attention and spatial resolution: a theoretical and experimental study of visual search in hierarchical patterns.

    abstract::Our aim has been to study visual search in hierarchical patterns through a computational neuroscience perspective. In this way we were able to analyse the relationship between the global precedence effect and attention. The theoretical part of our investigations extended a model built upon the biased-competition hypot...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p5633

    authors: Deco G,Heinke D

    更新日期:2007-01-01 00:00:00

  • Orientation priming of novel shapes in the context of viewpoint-dependent recognition.

    abstract::Can visual similarity between shapes facilitate orientation priming? Five experiments are reported in which this possibility was explored by using novel two-dimensional shapes that formed homogeneous stimulus classes. After training on individual shapes in a canonical view, the recognition of these shapes was tested i...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p260051

    authors: Gauthier I,Tarr MJ

    更新日期:1997-01-01 00:00:00

  • A theory of visual control of braking based on information about time-to-collision.

    abstract::A theory is presented of how a driver might visually control his braking. A mathematical analysis of the changing optic array at the driver's eye indicates that the simplest type of visual information, which would be sufficient for controlling braking and would also be likely to be easily picked up by the driver, is i...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p050437

    authors: Lee DN

    更新日期:1976-01-01 00:00:00

  • The AMBEGUJAS phenomenon and colour constancy.

    abstract::The AMBEGUJAS phenomenon is a reversible flat figure that is spontaneously shifting between two apparent 3-D shapes-'tile' and 'roof'. 2-D perceptions have very rarely been reported. Tied to the shifts between the tile and roof shapes are remarkable changes of perceived colour. In our example, the tile appears to have...

    journal_title:Perception

    pub_type: 杂志文章,评审

    doi:10.1068/p5126

    authors: Bergström SS

    更新日期:2004-01-01 00:00:00

  • The influence of feature conjunction on object inversion and conversion effects.

    abstract::The face inversion effect is considered by some as a marker ofholistic or configural processing. In an effort to understand the relations between object orientation and the use of configuration for recognition, we explored the extent to which the combination of information across discrete, spatially separated object f...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p7610

    authors: Bushmakin MA,James TW

    更新日期:2014-01-01 00:00:00

  • Moving stimuli define the shape of stationary chromatic patterns.

    abstract::A study is reported of phenomena involved in perceptually unified organisation of a stationary chromatic pattern and a moving black outline or dot pattern. When the corners of the outline pattern were temporally oscillated on a stationary chromatic square, the chromatic border appeared to follow the moving outline, as...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p261413

    authors: Goda N,Ejima Y

    更新日期:1997-01-01 00:00:00

  • Grasping partly occluded objects: effects of global stimulus information on action.

    abstract::We investigated here how partly occluded stimuli affect early and late prehension kinematics. Stimuli were pictures of partly occluded cylindrical objects with indentations or protrusions at regular intervals along the contour. They diverged into two plausible completions: a local completion, comprising a linear conti...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p6158

    authors: Lommertzen J,Van Lier R,Meulenbroek RG

    更新日期:2009-01-01 00:00:00

  • Can looking at a hand make your skin crawl? Peering into the uncanny valley for hands.

    abstract::It is postulated that there is an uncanny valley, whereby human-like stimuli such as robots or animated characters that fall short of being fully human are perceived as eerie or unsettling. Previous research has explored the existence of this effect for faces and whole bodies, while here we explore responses to photog...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p7569

    authors: Poliakoff E,Beach N,Best R,Howard T,Gowen E

    更新日期:2013-01-01 00:00:00

  • Hunger enhances vertical vection.

    abstract::Hunger was found to facilitate visually induced illusory upward and downward self-motions (vertical vection), but not illusory self-motion in depth (vection in depth). We propose that the origin of this hunger effect lies in the possibility that vertical self-motions (both real and illusory) are more likely to induce ...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p7226

    authors: Seno T,Ito H,Sunaga S,Palmisano S

    更新日期:2012-01-01 00:00:00

  • Seeing the disappearance of unseen objects.

    abstract::Because of the massive amount of incoming visual information, perception is fundamentally selective. We are aware of only a small subset of our visual input at any given moment, and a great deal of activity can occur right in front of our eyes without reaching awareness. While previous work has shown that even salient...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p5341no

    authors: Mitroff SR,Scholl BJ

    更新日期:2004-01-01 00:00:00

  • Perceptual Grouping Affects Haptic Enumeration Over the Fingers.

    abstract::Spatial arrangement is known to influence enumeration times in vision. In haptic enumeration, it has been shown that dividing the total number of items over the two hands can speed up enumeration. Here we investigated how spatial arrangement of items and non-items presented to the individual fingers impacts enumeratio...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1177/0301006615594958

    authors: Overvliet KE,Plaisier MA

    更新日期:2016-01-01 00:00:00

  • Novel visual illusions related to Vasarely's 'nested squares' show that corner salience varies with corner angle.

    abstract::Vasarely's 'nested-squares' illusion shows that 90 degrees corners can be more salient perceptually than straight edges. On the basis of this illusion we have developed a novel visual illusion, the 'Alternating Brightness Star', which shows that sharp corners are more salient than shallow corners (an effect we call 'c...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p5383

    authors: Troncoso XG,Macknik SL,Martinez-Conde S

    更新日期:2005-01-01 00:00:00

  • Perceptions of synchrony: different strokes for different folks?

    abstract::The spectacle of synchronous activity is both engaging and, for the social perceiver, informative. Judgments of the quality of social interactions covary with key characteristics of coordination dynamics (ie relative phase). Here we examined the converse relationship--are perceptions of synchrony shaped by social fact...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p7360

    authors: Lumsden J,Miles LK,Macrae CN

    更新日期:2012-01-01 00:00:00

  • Topological structure in the perception of apparent motion.

    abstract::Not only translations and rotations, but also intriguing 'plastic deformations' are observed in apparent motion. What kinds of invariants does the visual system depend on during these transformations to determine that two figures of different shapes nevertheless represent the same object? Experiments are reported in w...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p140197

    authors: Chen L

    更新日期:1985-01-01 00:00:00

  • Thatcher's children: development and the Thatcher illusion.

    abstract::Children do not show the same recognition disadvantage for inverted faces as adults do. It has been suggested that this is because the configural encoding (which is disrupted by inversion) becomes more useful or available as we get older. The distinction between configural processing and featural processing, however, ...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p5089

    authors: Lewis MB

    更新日期:2003-01-01 00:00:00

  • Making a Spectacle of Yourself: The Effect of Glasses and Sunglasses on Face Perception.

    abstract::We investigated the effect of wearing glasses and sunglasses on the perception of social traits from faces and on face matching. Participants rated images of people wearing no glasses, glasses and sunglasses on three social traits (trustworthiness, competence and attractiveness). Wearing sunglasses reduced ratings of ...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1177/0301006619844680

    authors: Graham DL,Ritchie KL

    更新日期:2019-06-01 00:00:00

  • Mental imagery of visual motion modifies the perception of roll-vection stimulation.

    abstract::When viewing a wide-angle visual display, which rotates in the frontoparallel plane around the line of sight, observers experience an illusory shift of the direction of gravity; this shift leads to an apparent tilt of the body and displaces allocentric space coordinates. In this study, subjects adjusted an indicator t...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p3088

    authors: Mast FW,Berthoz A,Kosslyn SM

    更新日期:2001-01-01 00:00:00

  • The role of disparity gradient in stereo vision.

    abstract::Burt and Julesz experimentally demonstrated that, in addition to Panum's fusional area, a quantity defined by them and named disparity gradient also plays a crucial part in deciding whether the human visual system would be able to fuse the images seen by the left and right eyes. The physical meaning of this quantity r...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p140685

    authors: Trivedi HP,Lloyd SA

    更新日期:1985-01-01 00:00:00

  • Modal completion: critical variables in apparent transparency.

    abstract::Conditions for perceptual modal completion are investigated using a stimulation pattern consisting of a figure moving behind a black opaque strip. This configuration leads, depending on conditions, either to the amodal Michotte tunnel effect, or to modal completion, ie the apparent transparency phenomenon. Four experi...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p160719

    authors: Hambrouck M,Thinès G,Michiels M

    更新日期:1987-01-01 00:00:00

  • Two categorical stages of object recognition.

    abstract::Visual object recognition was investigated in a group of eighty-one patients with right- or left-hemisphere lesions. Two tasks were used, one maximizing perceptual categorization by physical identity, the other maximizing semantic categorization by functional identity. The right-hemisphere group showed impairment on t...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p070695

    authors: Warrington EK,Taylor AM

    更新日期:1978-01-01 00:00:00

  • Cortical representation of visual three-dimensional space.

    abstract::Perception of real depth includes information on stereopsis and distance. How both interact in the visual pathway was the subject of a study performed on the behaving monkey. Neurons in the primary visual cortex (area V1) have their activity, visual and/or spontaneous, modulated by the viewing distance. Disparity sele...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p240287

    authors: Trotter Y

    更新日期:1995-01-01 00:00:00

  • The influence of aperture surfaces on the barber-pole illusion.

    abstract::The magnitude of the barber-pole illusion is measured as a function of the contrast, orientation, and phase difference between the moving 'barber-pole' grating and a moving 'surround' grating that forms the aperture surface. It is found that as the difference between the barber-pole grating and the surround grating in...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p260141

    authors: Mussap AJ,Te Grotenhuis K

    更新日期:1997-01-01 00:00:00

  • Illusion decrement and transfer of illusion decrement in Müller-Lyer figures.

    abstract::In the work reported in the literature the reduction or decrement in the magnitude of the Müller-Lyer illusion with continued inspection has been typically investigated with the use of the composite illusion form. Three experiments are reported in which the illusion decrement was separately examined in the underestima...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p220391

    authors: Predebon J,Stevens K,Petocz A

    更新日期:1993-01-01 00:00:00

  • Females, but not males, show greater pupillary response to direct- than deviated-gaze faces.

    abstract::Under suitable conditions, pupillary dilation is a reliable index of processing activity. Pupil size was tracked in male and female observers following the presentation of face stimuli for an age-judgment task. The eyes on the faces were either directed towards the observer or deviated to the side. Pupil dilation acco...

    journal_title:Perception

    pub_type: 杂志文章

    doi:10.1068/p5438

    authors: Porter G,Hood BM,Troscianko T

    更新日期:2006-01-01 00:00:00