57‐1: Spatiotemporal Noise Targets Inspired by Natural Imagery Statistics

2020 ◽  
Vol 51 (1) ◽  
pp. 842-845
Author(s):  
Timo Kunkel ◽  
Scott Daly
Keyword(s):  
Spatiotemporal Noise

Role of knowledge in human visual temporal integration in spatiotemporal noise

1996 ◽  
Vol 13 (10) ◽  
pp. 1960 ◽  
Author(s):  
Miguel P. Eckstein ◽  
James S. Whiting ◽  
James P. Thomas
Keyword(s):  
Temporal Integration ◽  
Spatiotemporal Noise

Temporal Integration and the Masking Effect of Spatiotemporal Noise

Perception ◽  
1997 ◽  
Vol 26 (1_suppl) ◽  
pp. 216-216 ◽  
Author(s):  
H T Kukkonen ◽  
J Rovamo
Keyword(s):  
Spectral Density ◽  
Exposure Duration ◽  
Temporal Integration ◽  
Detection Threshold ◽  
Critical Duration ◽  
Masking Effect ◽  
Integration Time ◽  
Detection Thresholds ◽  
Spatial Noise ◽  
Spatiotemporal Noise

In computer-generated spatiotemporal noise every stimulus frame contains a new static noise sample. The spectral density of white spatiotemporal noise is calculated by multiplying the squared rms contrast of noise by the product of the noise check area and the exposure duration of each noise check. When the exposure duration of each noise check is gradually increased, the spectral density of spatiotemporal noise increases, reaching its maximum when noise becomes static. In static spatial noise both stimulus and noise checks have the same duration. The signal-to-noise ratio is known to be constant at detection threshold. Detection thresholds should thus increase in proportion to the spectral density of spatiotemporal noise, which increases with the duration of the noise checks. We measured detection thresholds for stationary cosine gratings embedded in spatiotemporal noise. The exposure duration of the noise checks was increased from one frame duration to the total exposure duration of the stimulus grating. Noise was thus gradually transformed from spatiotemporal to static spatial noise. The contrast energy threshold increased in proportion to the spectral density of spatiotemporal noise up to a noise check duration found to be equal to the integration time for the stimulus grating without noise. After this, energy thresholds remained constant in spite of the increase in the spectral density of spatiotemporal noise. This suggests that the masking effect of spatiotemporal noise increases with the duration of noise checks up to the critical duration marking the saturation of the temporal integration of the signal.

Spatial Heterogeneity Induced Antispiral Wave and Spatiotemporal Coherence Resonance

2013 ◽  
Vol 647 ◽  
pp. 843-847
Author(s):  
Li Qiang Lv ◽  
Lin Ji
Keyword(s):  
Spatial Heterogeneity ◽  
Dynamic Behavior ◽  
Spiral Wave ◽  
Resonance Phenomenon ◽  
Microemulsion System ◽  
Coherence Resonance ◽  
Quantitative Characterization ◽  
Cardiac Fibrillation ◽  
Spatial Noise ◽  
Spatiotemporal Noise

Spiral wave is an important dynamic behavior in several physiological signaling processes, such as the cardiac fibrillation. Since antispiral wave recently been discovered in microemulsion system, it has been intensively studied and discussed. In this work, we find that the spatial noise induced heterogeneity in homogenous system may also induce antispiral formation. Quantitative characterization prove spatiotemporal coherence resonance phenomenon appears, and spatiotemporal noise is more favorable to optimally sustain the antispirals.

scholarly journals Effects of weak spatiotemporal noise on a bistable one-dimensional system

2003 ◽  
Author(s):  
Robert S. Maier ◽  
Daniel L. Stein
Keyword(s):  
Dimensional System ◽  
One Dimensional ◽  
Spatiotemporal Noise

Spatiotemporal noise in GPS position time-series from Crustal Movement Observation Network of China

2018 ◽  
Vol 216 (3) ◽  
pp. 1560-1577 ◽  
Author(s):  
Wei Wang ◽  
Xuejun Qiao ◽  
Dijin Wang ◽  
Zhengsong Chen ◽  
Pengfei Yu ◽  
...  
Keyword(s):  
Time Series ◽  
Crustal Movement ◽  
Movement Observation ◽  
Observation Network ◽  
Position Time Series ◽  
Spatiotemporal Noise

Spatiotemporal noise covariance estimation from limited empirical magnetoencephalographic data

2006 ◽  
Vol 51 (21) ◽  
pp. 5549-5564 ◽  
Author(s):  
Sung C Jun ◽  
Sergey M Plis ◽  
Doug M Ranken ◽  
David M Schmidt
Keyword(s):  
Covariance Estimation ◽  
Noise Covariance ◽  
Spatiotemporal Noise

NOISE-ENHANCED PROPAGATION IN A DISSIPATIVE CHAIN OF TRIGGERS

2002 ◽  
Vol 12 (03) ◽  
pp. 629-633 ◽  
Author(s):  
S. MORFU ◽  
J. C. COMTE ◽  
J. M. BILBAULT ◽  
P. MARQUIÉ
Keyword(s):  
Numerical Simulation ◽  
Stochastic Resonance ◽  
Signal To Noise Ratio ◽  
Signal Transmission ◽  
Active Role ◽  
Signal To Noise ◽  
Optimum Amount ◽  
Propagation Length ◽  
Noise Ratio ◽  
Spatiotemporal Noise

We study the influence of spatiotemporal noise on the propagation of square waves in an electrical dissipative chain of triggers. By numerical simulation, we show that noise plays an active role in improving signal transmission. Using the Signal to Noise Ratio at each cell, we estimate the propagation length. It appears that there is an optimum amount of noise that maximizes this length. This specific case of stochastic resonance shows that noise enhances propagation.

scholarly journals Spatiotemporal noise triggering infiltrative tumor growth with immunosurveillance

2008 ◽  
Vol 82 (2) ◽  
pp. 20003 ◽  
Author(s):  
Wei-Rong Zhong ◽  
Yuan-Zhi Shao ◽  
Li Li ◽  
Feng-Hua Wang ◽  
Zhen-Hui He
Keyword(s):  
Tumor Growth ◽  
Spatiotemporal Noise ◽  
Infiltrative Tumor

An Efficient Space Spatiotemporal Noise Filter for Dynamic Vision Sensor

2021 ◽  
Author(s):  
Bohan Feng ◽  
Xi Cheng ◽  
Jingjing Liu ◽  
Mingyu Wang ◽  
Wenhong Li ◽  
...  
Keyword(s):  
Vision Sensor ◽  
Noise Filter ◽  
Dynamic Vision ◽  
Spatiotemporal Noise

The Perceptual Influence of Spatiotemporal Noise on the Reconstruction of Shape from Dynamic Occlusion

2004 ◽  
pp. 407-414 ◽  
Author(s):  
Theresa Cooke ◽  
Douglas W. Cunningham ◽  
Heinrich H. Bülthoff
Keyword(s):  
Spatiotemporal Noise
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