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Model-based Delineation of Non-Uniformly Sampled ECG Signals

Thomas Niederhauser, Andreas Haeberlin, Barbara Jesacher, Andreas Fischer, Hildegard Tanner
<span title="2017-09-14">2017</span> <i title="Computing in Cardiology"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/5mzljmmf35bjpkflvspaktlkqi" style="color: black;">2017 Computing in Cardiology Conference (CinC)</a> </i> &nbsp;
In this paper, we investigated the delineation accuracy of non-uniform ECG signals arising from level-crossing sampling based on a hidden Markov model (HMM) and compared the results with conventional,  ...  However, the delineation error of the R-peak observed in the non-uniform data is smaller than in the uniform data (3.2 vs. 4.0 ms) even for a lower average sampling rate (69 vs. 250 samples per second)  ...  Emulator for Level-Crossing Sampling The idea is to use annotated ECG signals derived from a public-domain database.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.22489/cinc.2017.241-003">doi:10.22489/cinc.2017.241-003</a> <a target="_blank" rel="external noopener" href="https://dblp.org/rec/conf/cinc/NiederhauserHJF17.html">dblp:conf/cinc/NiederhauserHJF17</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/zl3cnowk3fdzzapoe5axmj2kra">fatcat:zl3cnowk3fdzzapoe5axmj2kra</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20200318130327/http://www.cinc.org/archives/2017/pdf/241-003.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/20/35/2035815bb01270a49deb3e921e82deec7a69fc27.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.22489/cinc.2017.241-003"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> Publisher / doi.org </button> </a>

Asynchronous Bank Of Filters For Sparse Signal Decomposition

Azime Can, Luis F. Chaparro
<span title="2013-09-09">2013</span> <i title="Zenodo"> Zenodo </i> &nbsp;
A wellknown non-uniform sampling scheme is level crossing (LC) [4] which has been used for analog processing [5] .  ...  An example illustrating the non-uniform sampling is presented later in section 4.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5281/zenodo.43387">doi:10.5281/zenodo.43387</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/oxadaueamzfg5a6dorevcdtati">fatcat:oxadaueamzfg5a6dorevcdtati</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20181101141046/https://zenodo.org/record/43387/files/1569741633.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/c5/2a/c52a907f16b7b67a8f3f87a20d496576bd8e3413.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5281/zenodo.43387"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="unlock alternate icon" style="background-color: #fb971f;"></i> zenodo.org </button> </a>

A New Non-uniform Sampling & Quantization by using a Modified Correlation

Seong-geon Bae, Myungjin Bae
<span title="2013-11-30">2013</span> <i title="Science and Engineering Research Support Society"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/kx4szfp7xvfn7laozkx3mc4iqe" style="color: black;">International Journal of Software Engineering and Its Applications</a> </i> &nbsp;
We proposed a new non-uniform sampling and quantization using variables low-pass filter with correlation.  ...  To overcome this problem, a new non-uniform methods is proposed, in which time domain coding is applied to two low-pass filters in lower bandwidth and the remain signals are compensated by the Gaussian  ...  These two sampling methods for linear sampling and non-uniform one. The interpolation method of non-uniform sampling in speech reconstruction is used as cosine interpolation.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.14257/ijseia.2013.7.6.33">doi:10.14257/ijseia.2013.7.6.33</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/j4zk2yq5mrg6nh5n4dzhmjekby">fatcat:j4zk2yq5mrg6nh5n4dzhmjekby</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20180601211742/http://www.sersc.org/journals/IJSEIA/vol7_no6_2013/33.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/c6/16/c616aa07affa23e24c1f3443fb42f6319afaa435.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.14257/ijseia.2013.7.6.33"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> Publisher / doi.org </button> </a>

An Improved Quality Adaptive Rate Filtering Technique Based On The Level Crossing Sampling

Saeed Mian Qaisar, Laurent Fesquet, Marc Renaudin
<span title="2008-05-28">2008</span> <i title="Zenodo"> Zenodo </i> &nbsp;
In this context an adaptive rate filtering technique, based on the level crossing sampling is devised.  ...  It adapts the sampling frequency and the filter order by following the input signal local variations. Thus, it correlates the processing activity with the signal variations.  ...  An efficient solution is proposed by combining the features of both non-uniform and uniform signal processing tools. II.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5281/zenodo.1082325">doi:10.5281/zenodo.1082325</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/pfdm55kj7rh23aij2wqhv2nkfu">fatcat:pfdm55kj7rh23aij2wqhv2nkfu</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20200208100158/https://zenodo.org/record/1082325/files/14089.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/73/a9/73a92ab0965704562252048146a4c7792155e3cb.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5281/zenodo.1082325"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="unlock alternate icon" style="background-color: #fb971f;"></i> zenodo.org </button> </a>

IIR digital filtering of non-uniformly sampled signals via state representation

L. Fesquet, B. Bidégaray-Fesquet
<span title="">2010</span> <i title="Elsevier BV"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/63drx5tykbartetpkracmzzfwu" style="color: black;">Signal Processing</a> </i> &nbsp;
The non-uniformity in the sample times leads to choose a state representation for the filters.  ...  The chain implements IIR filters which process directly the non-uniform samples without resampling in a regular scheme.  ...  compared to a level crossing sampled signal.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.sigpro.2010.03.030">doi:10.1016/j.sigpro.2010.03.030</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/nultk6jarzdadanr3zp4h3ixou">fatcat:nultk6jarzdadanr3zp4h3ixou</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20110331212025/http://ljk.imag.fr/membres/Brigitte.Bidegaray/Sources/FB10.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/50/78/50780671847de20969fa653b689d0ce5ea05d0af.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1016/j.sigpro.2010.03.030"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> elsevier.com </button> </a>

Spectral Analysis Of A Signal Driven Sampling Scheme

Laurent Fesquet, Mian Saeed
<span title="2006-09-04">2006</span> <i title="Zenodo"> Zenodo </i> &nbsp;
The aim of this work is to develop an efficient spectrum analysis technique devoted to the cross-level sampling scheme which provides a high quality spectrum at low computational complexity.  ...  As the simple interpolation methods use only one non-uniform observation for each resampled observation so they are efficient in terms of computational complexity.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5281/zenodo.53418">doi:10.5281/zenodo.53418</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/t2pukyrsczfvben2dna22bvi3e">fatcat:t2pukyrsczfvben2dna22bvi3e</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20201226090944/https://zenodo.org/record/53418/files/1568980792.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/e6/1d/e61d17bad8e69a6034dbdca998b5bb0239900da7.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5281/zenodo.53418"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="unlock alternate icon" style="background-color: #fb971f;"></i> zenodo.org </button> </a>

Adaptive Digital Channelization of Sparse Wideband Analog Signals at Sub-Nyquist Rate

Peng-zhi QIAN, Bo PENG, Zhen LIU, Yong-xiang LIU
<span title="2018-12-05">2018</span> <i title="DEStech Publications"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/52spf3of4jbu5da2xrhvubclcy" style="color: black;">DEStech Transactions on Computer Science and Engineering</a> </i> &nbsp;
Considering that the conventional digital channelized receiver requires a high sampling rate for a wideband signal and produces a cross-channel problem due to unknown prior information of the received  ...  The method consists of three parts, i.e., modulated wideband converter (MWC) sampling system, sparse recovery algorithm, synthesis filter banks.  ...  Combining the MWC and the non-uniform channelization technologies, we propose an adaptive channelization method. The front end uses the MWC sampling system to reduce the sampling rate.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.12783/dtcse/cmsam2018/26522">doi:10.12783/dtcse/cmsam2018/26522</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/juoh3f2oenbmtp333yavawckcy">fatcat:juoh3f2oenbmtp333yavawckcy</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20190427045507/http://dpi-proceedings.com/index.php/dtcse/article/download/26522/25935" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/c5/95/c5951d7c994351602c57d735a833777ea3384866.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.12783/dtcse/cmsam2018/26522"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> Publisher / doi.org </button> </a>

Signal-Dependent Techniques For Non-Stationary Signal Sampling And Reconstruction

Modris Greitans, Rolands Shavelis
<span title="2009-08-24">2009</span> <i title="Zenodo"> Zenodo </i> &nbsp;
CONCLUSIONS The proposed approach for non-stationary signal processing uses signal dependent techniques: level crossing sampling for data acquisition and applying of time-varying bandwidth filter for signal  ...  Since the level-crossing sampling scheme provides non-equidistantly spaced samples, appropriate processing methods must be developed.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5281/zenodo.41708">doi:10.5281/zenodo.41708</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/5cetrs6ikfgvba7y4fxiujdtyq">fatcat:5cetrs6ikfgvba7y4fxiujdtyq</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20200309235743/https://zenodo.org/record/41708/files/1569192502.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/ba/83/ba83ae2206cb4126b5c5020750780e736c6d2fc9.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5281/zenodo.41708"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="unlock alternate icon" style="background-color: #fb971f;"></i> zenodo.org </button> </a>

Computationally Efficient Adaptive Rate Sampling And Filtering

Saeed Mian Qaisar, Laurent Fesquet, Marc Renaudin
<span title="2007-09-03">2007</span> <i title="Zenodo"> Zenodo </i> &nbsp;
It is based on "level-crossing" that provides a non-uniform time repartition of the samples.  ...  An efficient solution is proposed by combining the features of both non-uniform and uniform signal processing tools.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5281/zenodo.40643">doi:10.5281/zenodo.40643</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/w3xtxxlq3fcztomrqptumzbsla">fatcat:w3xtxxlq3fcztomrqptumzbsla</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20181101223729/https://zenodo.org/record/40643/files/d2l-g05.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/41/08/41085a0cad6cce1036a7f6b894f7a144ed961ae6.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5281/zenodo.40643"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="unlock alternate icon" style="background-color: #fb971f;"></i> zenodo.org </button> </a>

Backward Adaptation for Power Efficient Sampling

Soheil Feizi, Georgios Angelopoulos, Vivek K Goyal, Muriel Medard
<span title="">2014</span> <i title="Institute of Electrical and Electronics Engineers (IEEE)"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/gkn2pu46ozb4tmkxczacnmtvkq" style="color: black;">IEEE Transactions on Signal Processing</a> </i> &nbsp;
Index Terms-Nonuniform sampling, energy efficient acquisition schemes, compressed sensing, adaptive sampling for biomedical applications.  ...  Three TANS methods are proposed for different signal models and sampling requirements: i) TANS by polynomial extrapolation, which only assumes the third derivative of the signal is bounded but requires  ...  For instance, a nonuniform sampling scheme based on level-crossings with iterative decoding is considered in [3] , while [4] presents an approach based on level crossings with a filtering technique,  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/tsp.2014.2332445">doi:10.1109/tsp.2014.2332445</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/a6zvmcr7mjab7fcls5sqicdjwm">fatcat:a6zvmcr7mjab7fcls5sqicdjwm</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20150117035935/http://www.mit.edu:80/~georgios/papers/ToSP14.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/9f/17/9f17a38baa013bb697e95fed6dc3908842de1c8c.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/tsp.2014.2332445"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> ieee.com </button> </a>

Herbicide Incorporation Analysis Using Computer Vision

AF. E. Dowell, J. C. Siemens, L. E. Bode, W. D. Wigger
<span title="">1988</span> <i title="American Society of Agricultural and Biological Engineers (ASABE)"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/aqati3vro5fuhjqecwvgmscv5q" style="color: black;">Transactions of the ASAE</a> </i> &nbsp;
HERBICIDE TRACING INVESTIGATIONS Available methods of tracing the herbicide displacements were examined for accuracy, cost, and efficiency. Use of X-rays of a tracer were studied initially.  ...  Proper use includes uniform application and, for some herbicides, uniform incorporation.  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.13031/2013.30708">doi:10.13031/2013.30708</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/bh3dweobxba73n66djwe6md74y">fatcat:bh3dweobxba73n66djwe6md74y</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170815030441/https://www.ars.usda.gov/ARSUserFiles/30200525/Herbicide%20Incorporation%20Anaylsis%20Using%20Computer%20Vision.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/ef/76/ef76c276876080f21215d7c796715937cc9c05d8.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.13031/2013.30708"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> Publisher / doi.org </button> </a>

Adaptive rendering with non-local means filtering

Fabrice Rousselle, Claude Knaus, Matthias Zwicker
<span title="2012-11-01">2012</span> <i title="Association for Computing Machinery (ACM)"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/cqrugwalkvcezgalqorn4fwnuu" style="color: black;">ACM Transactions on Graphics</a> </i> &nbsp;
Abstract We propose a novel approach for image space adaptive sampling and filtering in Monte Carlo rendering. We use an iterative scheme composed of three steps.  ...  First, we adaptively distribute samples in the image plane. Second, we denoise the image using a non-linear filter.  ...  We propose several key extensions to the original filter formulation that allow us to use it effectively in an adaptive rendering framework: • dual-buffered filtering (Section 3.1.1), • support for non-uniform  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1145/2366145.2366214">doi:10.1145/2366145.2366214</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/sylgvcofgrg2hdpjf77ukfuqba">fatcat:sylgvcofgrg2hdpjf77ukfuqba</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20170811162908/http://cs.umd.edu/~zwicker/publications/AdaptiveRenderingNLM-SIGA12.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/5b/56/5b562c433b3db69a2c63d0eb6c95b149ae0616a1.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1145/2366145.2366214"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="external alternate icon"></i> acm.org </button> </a>

Signal Driven Sampling And Filtering A Promising Approach For Time Varying Signals Processing

Saeed Mian Qaisar, Laurent Fesquet, Marc Renaudin
<span title="2009-11-28">2009</span> <i title="Zenodo"> Zenodo </i> &nbsp;
In this context, a signal driven filtering technique, based on the level crossing sampling is devised.  ...  It adapts the sampling frequency and the filter order by analysing the input signal local variations. Thus, it correlates the processing activity with the signal variations.  ...  It is based on the principle of "levelcrossing" that provides a non-uniform time repartition of the samples [1] , consequently it is named as the LCSS (level crossing sampling scheme).  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5281/zenodo.1071913">doi:10.5281/zenodo.1071913</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/gt7aujptcnbnncush754zs4u2a">fatcat:gt7aujptcnbnncush754zs4u2a</a> </span>
<a target="_blank" rel="noopener" href="https://web.archive.org/web/20201224203932/https://zenodo.org/record/1071914/files/8983.pdf" title="fulltext PDF download" data-goatcounter-click="serp-fulltext" data-goatcounter-title="serp-fulltext"> <button class="ui simple right pointing dropdown compact black labeled icon button serp-button"> <i class="icon ia-icon"></i> Web Archive [PDF] <div class="menu fulltext-thumbnail"> <img src="https://blobs.fatcat.wiki/thumbnail/pdf/de/65/de6508c58e14e58f7ddd85543299749b24829356.180px.jpg" alt="fulltext thumbnail" loading="lazy"> </div> </button> </a> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.5281/zenodo.1071913"> <button class="ui left aligned compact blue labeled icon button serp-button"> <i class="unlock alternate icon" style="background-color: #fb971f;"></i> zenodo.org </button> </a>

Assessment methodology of backwash in pressurized sand filters

Fábio P. de Deus, Roberto Testezlaf, Marcio Mesquita
<span title="">2016</span> <i title="FapUNIFESP (SciELO)"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/id7mb4lujffy7b3xcfl4sgo3xy" style="color: black;">Revista Brasileira de Engenharia Agrícola e Ambiental - Agriambi</a> </i> &nbsp;
Backwash cleaning efficiency was evaluated in all trials based on the mass of removed solids for different filter bed layers and throughout the entire filter bed.  ...  Backwash trials were conducted in an experimental module with three new sand filters of the same commercial model.  ...  Acknowledgments To the São Paulo Research Support Foundation -FAPESP, for funding the Research Project.  ... 
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Gradient Difference based approach for Text Localization in Compressed domain [article]

B.H. Shekar, Smitha M.L
<span title="2015-02-13">2015</span> <i > arXiv </i> &nbsp; <span class="release-stage" >pre-print</span>
using zero crossing technique.  ...  Finally, the morphological dilation operation is employed on the detected text blocks for scene text localization.  ...  a) Proposed method b) Gradient + Edge based method c) Edge based method d) Gradient based method e) Uniform Color based method Fig. 4.1 Sample Text Localization results for the images taken from Horizontal  ... 
<span class="external-identifiers"> <a target="_blank" rel="external noopener" href="https://arxiv.org/abs/1502.03918v1">arXiv:1502.03918v1</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/f6tqoosbpbgrbf5nsdpnyw4yda">fatcat:f6tqoosbpbgrbf5nsdpnyw4yda</a> </span>
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