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Correlation Filters with Limited Boundaries [article]

Hamed Kiani Galoogahi, Terence Sim, Simon Lucey
2014 arXiv   pre-print
In this paper, we propose a novel approach to correlation filter estimation that: (i) takes advantage of inherent computational redundancies in the frequency domain, and (ii) dramatically reduces boundary  ...  Recent extensions to correlation filters, such as MOSSE, have reignited interest of their use in the vision community due to their robustness and attractive computational properties.  ...  CONCLUSIONS A method for estimating a correlation filter is presented here that dramatically limits circular boundary effects while preserving many of the computational advantages of canonical frequency  ... 
arXiv:1403.7876v1 fatcat:dzuvxpbbgjbrbbwue3wnuldx3y

Correlation filters with limited boundaries

Hamed Kiani Galoogahi, Terence Sim, Simon Lucey
2015 2015 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)  
In this paper, we propose a novel approach to correlation filter estimation that: (i) takes advantage of inherent computational redundancies in the frequency domain, (ii) dramatically reduces boundary  ...  Recent extensions to correlation filters, such as MOSSE, have reignited interest of their use in the vision community due to their robustness and attractive computational properties.  ...  Conclusions A method for estimating a correlation filter is presented here that dramatically limits circular boundary effects while preserving many of the computational advantages of canonical frequency  ... 
doi:10.1109/cvpr.2015.7299094 dblp:conf/cvpr/GaloogahiSL15 fatcat:x7n6cjytrnbxxpukzy4ctit6de

Sampling Operator to Learn the Scalable Correlation Filter for Visual Tracking

Minkyu Lee, Taeoh Kim, Yuseok Ban, Eungyeol Song, Sangyoun Lee
2019 IEEE Access  
The scalable filter encodes the sparse frequency representation to reconstruct a larger filter with zeros outside of the object in the spatial domain.  ...  However, the number of available training samples is limited to the filter size, and the lack of samples leads to poor generalization. Moreover, spectral leakage degrades the filter quality.  ...  [19] proposed correlation filters with limited boundaries (CFLB).  ... 
doi:10.1109/access.2019.2892429 fatcat:ppwaownm25d55clrx3od4dy2lu

The effect of pattern overlap on the accuracy of high resolution electron backscatter diffraction measurements

Vivian Tong, Jun Jiang, Angus J. Wilkinson, T. Ben Britton
2015 Ultramicroscopy  
Regions near grain boundaries are often of interest but overlap of patterns from the two grains could reduce accuracy of the cross-correlation analysis.  ...  To explore this concern, patterns from the interior of two grains have been mixed to simulate the interaction volume crossing a grain boundary so that the effect on the accuracy of the cross correlation  ...  Acknowledgments The authors would like to thank Drs Stuart Wright, Eleanor Clarke, Phani Karamched and Philip Littlewood for helpful discussions over the years concerning pattern overlap at grain boundaries  ... 
doi:10.1016/j.ultramic.2015.04.019 pmid:25957534 fatcat:5ytrc2h6sjgwfmmmn7gpxvfvki

The transfer function of the LIF model: from white to filtered noise

Jannis Schuecker, Markus Diesmann, Moritz Helias
2014 BMC Neuroscience  
We treat the problem of synaptic filtering with short time constants by reducing the corresponding two dimensional Fokker-Planck equation to one dimension with effective boundary conditions [6] .  ...  The main finding is that the linear response amplitude of model neurons exposed to filtered synaptic noise does not decay to zero in the high frequency limit.  ...  We treat the problem of synaptic filtering with short time constants by reducing the corresponding two dimensional Fokker-Planck equation to one dimension with effective boundary conditions [6] .  ... 
doi:10.1186/1471-2202-15-s1-p146 pmcid:PMC4125055 fatcat:cowgztncirdgtpaczsg7b6yeri

Page 780 of Biological Reviews Vol. 89, Issue 4 [page]

2014 Biological Reviews  
Phylogeo- graphic structure should therefore correlate inversely with behavioural preference and physiological capacity for dispersal (e.g. high rates, over large distances).  ...  Phylogeographic breaks correlated with the BDT region are also recovered in mtDNA variation in catfishes (Perdices et al., 2002) and frogs (Crawford et al., 2007; Robert- son, Duryea & Zamudio, 2009) and  ... 

Page 710 of American Society of Civil Engineers. Collected Journals Vol. 110, Issue 6 [page]

1984 American Society of Civil Engineers. Collected Journals  
There was clearly no correlation (Fig. 6). Some property of the clay other than the d,; size influences the filter needed, but it is not the plasticity as measured by the Atterberg limits.  ...  D,s3 = 1.15 mm D,s53 = 0.82 mm 1.2 Failure 0.84 Failure 2.0 Failure 1.0 Failure Fig. 6 presents the Atterberg limits and D,53/dg; ratio for each of the fine-grained clays tested (soils with dss less than  ... 

A simple extension of digital filter-based turbulent inflow to non-uniform structured grids

N.S. Dhamankar, G.A. Blaisdell, A.S. Lyrintzis
2016 Aerospace Science and Technology  
The digital filter-based turbulence generator is one of the widely used synthetic turbulence inflow boundary conditions for large-scale-resolving flow simulations.  ...  to be about 10 boundary layer thicknesses.  ...  The filter has to be designed in such a way that the correlation established by Equation (2) matches in form with the correlation observed in the physical flow to be simulated, thus prescribing a realistic  ... 
doi:10.1016/j.ast.2016.06.023 fatcat:rbkhyatwbjcwrfredvepht6lni

Learning Temporal Regularized Correlation Filter Tracker with Spatial Reliable Constraint

Lei Pu, Xinxi Feng, Zhiqiang Hou
2019 IEEE Access  
Correlation filters have achieved appealing performance with high speed in recent years.  ...  However, the periodic assumption of the training data would introduce unwanted boundary effects, which severely degrade the discrimination power of the correlation filter.  ...  Despite much improvement is obtained, the correlation filters still suffer from the unwanted boundary effects.  ... 
doi:10.1109/access.2019.2922416 fatcat:mzli7ni3bfes5bb6f7rstypkvy

Downscaling Satellite-Based Estimates of Ocean Bottom Pressure for Tracking Deep Ocean Mass Transport

Andrew Delman, Felix Landerer
2022 Remote Sensing  
However, GRACE data products are limited in spatial resolution, and conflate signals from many depth levels along steep continental slopes.  ...  In validations at intraannual (3–12 month) timescales, correlations of downscaled GRACE data (with depth adjustment) and in situ bottom pressure recorder time series were improved in ∼79% of sites, compared  ...  In these boundary regions, OBP tends to be highly spatially correlated with points at a similar depth along the same boundary (Figure 1 ).  ... 
doi:10.3390/rs14071764 fatcat:qlg6ff6panbkfjfz4mfxdzbzze

Multiscale interactions between surface shear stress and velocity in turbulent boundary layers

V. Venugopal
2003 Journal of Geophysical Research  
scale invariance under normalization of scale with distance to the surface, z; and (3) for scales larger than the boundary layer height, d, the correlation reaches a plateau value which is a function  ...  models of turbulent boundary layers.  ...  Many thanks to Ivan Marusic and Gary Kunkel for kindly providing us with the shear stress and velocity measurements.  ... 
doi:10.1029/2002jd003025 fatcat:iwphx4kumvgjhfbtryrpdvkexq

Page 937 of American Society of Civil Engineers. Collected Journals Vol. 115, Issue 7 [page]

1989 American Society of Civil Engineers. Collected Journals  
The filter boundary D,;, was always in the range from about 0.6—1.5 mm, with no apparent correlation with the particle size distribution.  ...  As in our previous paper (Sherard et al. 1984b), there was no correlation between the experimentally determined filter boundary D,;, and the plasticity as defined by the Atterberg limits or the tendency  ... 

Pair Correlation Functions with Free-Form Boundaries for Distribution Inpainting and Decomposition

Baptiste Nicolet, Pierre Ecormier-Nocca, Pooran Memari, Marie-Paule Cani
2020 Annual Conference of the European Association for Computer Graphics  
In this work we introduce a triangulationbased local filtering method to extend PCF-based analysis to exemplars with free-form boundaries.  ...  their intra and inter-class correlations.  ...  In this paper, we extend PCF analysis to exemplars with freeform boundaries.  ... 
doi:10.2312/egs.20201025 dblp:conf/eurographics/NicoletEMC20 fatcat:hghj3hmherfjhdulmjpsa47kxu

Long-term multiobject tracking using alternative correlation filters

Kemal Batuhan BAŞKURT, Refik SAMET
2018 Turkish Journal of Electrical Engineering and Computer Sciences  
The proposed object-tracking approach is realized with two types of independent correlation filters estimating location and scale.  ...  Tracking sustainability is provided by putting alternative correlation filters into use when the quality of the tracking output decreases to a critical level.  ...  Correlation filter initialization Correlation filter-based trackers need an initial boundary f of the target to start tracking, provided that the target appearance has been modeled using a correlation  ... 
doi:10.3906/elk-1709-245 fatcat:h5wyke6hzzduhcqfnwb2xk7f3y

Taner filter settings and automatic correlation optimisation for cyclostratigraphic studies

Christian Zeeden, Stefanie Kaboth, Frederik J. Hilgen, Jacques Laskar
2018 Computers & Geosciences  
filter settings and automatic correlation optimisation for cyclostratigraphic studies.  ...  31 32 Key words 33 cyclostratigraphy; automated tuning; automated time scale optimisation; Taner filter settings; 34 correlation 35 36  ...  (2) Subject to {lower filter boundary, upper filter boundary, filter roll-off rate}. 150 Testing filter settings for obliquity and eccentricity is done in a similar way, with a given basis is not used  ... 
doi:10.1016/j.cageo.2018.06.005 fatcat:ecyh546abzaw5cjnbrlyruywbu
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