Rapid successive presentation improves symmetry perception

R. Niimi; K. Watanabe; K. Yokosawa

doi:10.1167/5.8.216

Symmetry perception with spiking neural networks

Scientific Reports ◽

10.1038/s41598-021-85232-3 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Jonathan K. George ◽

Cesare Soci ◽

Mario Miscuglio ◽

Volker J. Sorger

Keyword(s):

Neural Networks ◽

Mirror Symmetry ◽

Satellite Image ◽

Image Data ◽

Coincidence Detection ◽

Spiking Neural Networks ◽

Feed Forward Neural Network ◽

Neuromorphic Computing ◽

Symmetry Perception ◽

High Level

AbstractMirror symmetry is an abundant feature in both nature and technology. Its successful detection is critical for perception procedures based on visual stimuli and requires organizational processes. Neuromorphic computing, utilizing brain-mimicked networks, could be a technology-solution providing such perceptual organization functionality, and furthermore has made tremendous advances in computing efficiency by applying a spiking model of information. Spiking models inherently maximize efficiency in noisy environments by placing the energy of the signal in a minimal time. However, many neuromorphic computing models ignore time delay between nodes, choosing instead to approximate connections between neurons as instantaneous weighting. With this assumption, many complex time interactions of spiking neurons are lost. Here, we show that the coincidence detection property of a spiking-based feed-forward neural network enables mirror symmetry. Testing this algorithm exemplary on geospatial satellite image data sets reveals how symmetry density enables automated recognition of man-made structures over vegetation. We further demonstrate that the addition of noise improves feature detectability of an image through coincidence point generation. The ability to obtain mirror symmetry from spiking neural networks can be a powerful tool for applications in image-based rendering, computer graphics, robotics, photo interpretation, image retrieval, video analysis and annotation, multi-media and may help accelerating the brain-machine interconnection. More importantly it enables a technology pathway in bridging the gap between the low-level incoming sensor stimuli and high-level interpretation of these inputs as recognized objects and scenes in the world.

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Numerosity Estimation with Successive Presentation: Item Organization

The Journal of General Psychology ◽

10.1080/00221309.1983.9711490 ◽

1983 ◽

Vol 108 (2) ◽

pp. 169-173 ◽

Cited By ~ 1

Author(s):

Norman Ginsburg ◽

Helmut Riedel

Keyword(s):

Successive Presentation ◽

Numerosity Estimation

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Electrophysiological and Psychophysical Responses to Modulation of Contrast of a Grating Pattern

Perception ◽

10.1068/p010341 ◽

1972 ◽

Vol 1 (3) ◽

pp. 341-349 ◽

Cited By ~ 53

Author(s):

I Bodis-Wollner ◽

C D Hendley ◽

J J Kulikowski

Keyword(s):

Visual System ◽

Human Visual System ◽

Just Noticeable Difference ◽

Evoked Responses ◽

Successive Presentation ◽

Electrophysiological Data ◽

Grating Pattern ◽

Modulation Rate ◽

Contrast Discrimination ◽

Lower Contrast

Contrast-modulated grating patterns were used to compare evoked responses and psychophysical thresholds of contrast modulation. The stimulus consisted of the successive presentation of a grating pattern at a higher and lower contrast. At a modulation rate of 8 Hz it was found that there is correspondence between the two kinds of data for a 6 cycle/degree grating. The just noticeable difference was not constant, and data approximated a Weber's law of contrast discrimination. However, it was found that there is a slight departure from this law, in that the ratio decreases with mean contrast. Both psychophysical and electrophysiological data exclude a model of simple luminance detection and are consistent with the operation of spatial contrast detectors in the human visual system.

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Human Visual Perception of Two-Dimensional Symmetry

10.31234/osf.io/x7uvf ◽

2017 ◽

Author(s):

Jeremy Cole ◽

David Reitter ◽

Yanxi Liu

Keyword(s):

Visual Perception ◽

Shortest Path ◽

Pattern Perception ◽

Two Dimensional ◽

Human Visual Perception ◽

Symmetry Perception ◽

Wallpaper Groups

Most literature on symmetry perception has focused on bilateralreflection symmetry with some suggesting that it isthe only type of symmetry humans can perceive (Wilson &Wilkinson, 2002). Using image stimuli generated from themathematically well-defined seventeen wallpaper groups, thisstudy demonstrates that humans can discriminate various symmetriesfound in 2D wallpaper patterns (Liu, Hel-Or, Kaplan,Van Gool, et al., 2010). Furthermore, the results demonstratethe features which contribute to wallpaper pattern perception.All wallpaper groups but one were found to be reliably distinguishable(p < 0:05). Additionally, as wallpaper patterns canbe arranged in a hierarchy, we propose a metric to quantify thesimilarity of their perception using the shortest path in this hierarchy.This subgroup distance was found to be a factor in alikely model of pattern perception.

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Brightness Discrimination Learning under Conditions of Simultaneous and Successive Presentation of Stimuli with Punishment

Psychological Reports ◽

10.2466/pr0.1963.13.1.127 ◽

1963 ◽

Vol 13 (1) ◽

pp. 127-132 ◽

Cited By ~ 1

Author(s):

Sheldon J. Lachman ◽

Donald H. Taylor

Keyword(s):

Discrimination Learning ◽

Electric Shock ◽

Brightness Discrimination ◽

Learning Criterion ◽

Gestalt Theory ◽

Successive Presentation ◽

Parallel Group

Under relational conditions with electric shock punishment for incorrect responses, all 9 rats learned to choose the dimmer of two stimuli; no Ss in a parallel group of rats ( N = 6) given equivalent training under absolute conditions reached the learning criterion. Results are interpreted as supporting the Gestalt theory of discrimination learning rather than the theory of Spence.

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Stimulus-Presentation Methods and Ability to Shift Dimensions in Color-Form Preference of Retardates

Perceptual and Motor Skills ◽

10.2466/pms.1973.36.3.807 ◽

1973 ◽

Vol 36 (3) ◽

pp. 807-810 ◽

Cited By ~ 1

Author(s):

Wendell J. Goesling

Keyword(s):

Preference Test ◽

Stimulus Presentation ◽

The Other ◽

One Dimension ◽

Sorting Task ◽

Successive Presentation ◽

Mental Age ◽

Color Form ◽

Presentation Methods ◽

Form Preference

A color-form sorting task was given to 40 institutionalized male retardates divided into two groups equated in mental age. Part I, a preference test, required that 8 stimulus figures, varying in color (red or green) and form (triangle or square), be sorted into 2 bins each marked by a comparison stimulus-figure resembling test stimuli on only one dimension. In Part II, stimuli were again presented but with the instructions to shift the basis of categorization. The procedure with both groups differed only in the method of stimulus presentation; one group received 8 figures simultaneously, the other successively. Retardates in general preferred color to form in categorization and ability to shift dimensions is facilitated by successive presentation.

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