388 Hits in 4.7 sec

Precise hyperacuity estimation of spike timing from calcium imaging [article]

Huu Hoang, Masa-aki Sato, Shigeru Shinomoto, Shinichiro Tsutsumi, Miki Hashizume, Tomoe Ishikawa, Masanobu Kano, Yuji Ikegaya, Kazuo Kitamura, Mitsuo Kawato, Keisuke Toyama
2019 bioRxiv   pre-print
Furthermore, the benchmark analysis of experimental data from different brain regions and simulation of a broader range of experimental conditions showed that our algorithm was among the best in a class  ...  First, Bayesian inference estimates the calcium spike model by assuming the constancy of the spike shape and size.  ...  cortex data during burst activities.  ... 
doi:10.1101/790600 fatcat:2ihgamh4bjcntpmbrrldpinsga

Self-adaptive Single and Multi-illuminant Estimation Framework based on Deep Learning [article]

Yongjie Liu, Sijie Shen
2019 arXiv   pre-print
Illuminant estimation plays a key role in digital camera pipeline system, it aims at reducing color casting effect due to the influence of non-white illuminant.  ...  We outperform the state-of-the-art methods on standard benchmarks with the largest relative improvement of 16%.  ...  For example, "U-net" structure for image segmentation [31] , image to image pixel wise translation [22] , image denoising from a burst of input images [28] .  ... 
arXiv:1902.04705v1 fatcat:icgkfnzyzrd35ajmqmgmx3bxum

Time Lens: Event-based Video Frame Interpolation

Stepan Tulyakov, Daniel Gehrig, Stamatios Georgoulis, Julius Erbach, Mathias Gehrig, Yuanyou Li, Davide Scaramuzza
2021 2021 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)  
indicates equal contribution Time Lens, a novel method that leverages the advantages of both.  ...  We extensively evaluate our method on three synthetic and two real benchmarks where we show an up to 5.21 dB improvement in terms of PSNR over state-of-the-art frame-based and event-based methods.  ...  Color indicates if a method works with color frames. For SSIM and PSNR we show mean and one standard deviation.  ... 
doi:10.1109/cvpr46437.2021.01589 fatcat:adohqhvdvjbbpchbbgsvs2mkqa

Burst photography for high dynamic range and low-light imaging on mobile cameras

Samuel W. Hasinoff, Dillon Sharlet, Ryan Geiss, Andrew Adams, Jonathan T. Barron, Florian Kainz, Jiawen Chen, Marc Levoy
2016 ACM Transactions on Graphics  
a mobile camera and used as a substitute for the conventional pipeline in almost all circumstances.  ...  A comparison of a conventional camera pipeline (left, middle) and our burst photography pipeline (right) running on the same cell-phone camera.  ...  A key enabling technology for our approach is the ability to request a specific exposure time and gain for each frame in a burst.  ... 
doi:10.1145/2980179.2980254 fatcat:osxcads45vdvniilgub7fkr6pq

DSP implementation of the retinex image enhancement algorithm

Glenn D. Hines, Zia-ur Rahman, Daniel J. Jobson, Glenn A. Woodell, Zia-ur Rahman, Robert A. Schowengerdt, Stephen E. Reichenbach
2004 Visual Information Processing XIII  
It performs a non-linear spatial/spectral transform that synthesizes strong local contrast enhancement and color constancy.  ...  NTSC video is captured using a dedicated frame-grabber card, Retinex processed, and displayed on a standard monitor.  ...  The authors would also like to thank Andrew Nesterov for his ideas on managing interrupts.  ... 
doi:10.1117/12.544500 dblp:conf/spieVIP/HinesRJW04 fatcat:yr4jhnifmneppfzdhpuxuaol74

Table of contents

2020 IEEE Transactions on Image Processing  
Murala 628 Burst Ranking for Blind Multi-Image Deblurring ...................................................... F. A.  ...  Wang 6396 Color Constancy by Reweighting Image Feature Maps ........................................... J. Qiu, H. Xu, and Z.  ... 
doi:10.1109/tip.2019.2940373 fatcat:i7hktzn4wrfz5dhq7hj75u6esa

Performance on Image Segmentation Resulting In Canny and MoG

Mr. S Ravikumar
2012 IOSR Journal of Computer Engineering  
Color constancy methods are largely dependent on the distribution of colors and color edges in an image. Natural image statistics and scene semantics are used in the color consistency methods.  ...  Integrated feature weight is assigned for the images to perform the learning process. The MoG algorithm is enhanced with combined feature weight model.  ...  He Presented a Paper in National conferences. He is a Life member of Computer Society of India and a Life member of Indian Society for Technical Education.  ... 
doi:10.9790/0661-0620108 fatcat:vq7mo32nybdm5m5a5ef7aqhbky

FTSPlot: Fast Time Series Visualization for Large Datasets

Michael Riss, Jan Aerts
2014 PLoS ONE  
The presented software is freely available and can be included as a Qt GUI component in future software projects, providing a standard visualization method for long-term electrophysiological experiments  ...  A demonstration prototype has been implemented and benchmarks show that the technology is capable of displaying large amounts of time series data, event, and interval annotations lag-free with v20 ms.  ...  Acknowledgments I extend my heartfelt gratitude to Ling Wang and the reviewers for their suggestions on how to improve the manuscript.  ... 
doi:10.1371/journal.pone.0094694 pmid:24732865 pmcid:PMC3986407 fatcat:zp7gee5mdzafvlk7zusu7g6nkm

National Scale Surface Deformation Time Series Generation through Advanced DInSAR Processing of Sentinel-1 Data within a Cloud Computing Environment

Ivana Zinno, Manuela Bonano, Sabatino Buonanno, Francesco Casu, Claudio De Luca, Michele Manunta, Mariarosaria Manzo, Riccardo Lanari
2018 IEEE Transactions on Big Data  
We present an automatic pipeline implemented within the Amazon Web Services (AWS) Cloud Computing platform for the interferometric processing of large Sentinel-1 (S1) multi-temporal SAR datasets, aimed  ...  approach referred to as Small BAseline Subset (SBAS) technique, which allows producing, with centimeter to millimeter accuracy, surface deformation time series and the corresponding mean velocity maps from a  ...  ACKNOWLEDGMENTS This work was supported by the Italian Civil Defense Protection Department, the ESA's GEP project, the EPOS-IP project of the European Union Horizon 2020 for research and innovation program  ... 
doi:10.1109/tbdata.2018.2863558 fatcat:o24zdhhthrgtjg3lawmx2dnw4m

Exposure Stacks of Live Scenes with Hand-Held Cameras [chapter]

Jun Hu, Orazio Gallo, Kari Pulli
2012 Lecture Notes in Computer Science  
In a typical scenario the camera is hand-held and is therefore prone to moving during the capture of an image burst, while the scene is likely to contain moving objects.  ...  Our approach warps and modifies the content of the images in the stack to match that of a reference image.  ...  a case, it is an important benchmark and allows to illustrate some strengths of the proposed approach.  ... 
doi:10.1007/978-3-642-33718-5_36 fatcat:mzyafufldrh77mmxpbor5dsekq

Intermodal and Subwavelength Energy Trapping in Nonlinear Metamaterial Waveguides

Weijian Jiao, Stefano Gonella
2018 Physical Review Applied  
Finally a detailed scan of selected cells highlights a strong and persistent axial activation of the resonators which displays subwavelength deformation features that are unattainable, for the axial mode  ...  , by exciting at the same frequency in a linear regime.  ...  Zhang for the many useful discussions and their assistance during the initial stage of the experiments.  ... 
doi:10.1103/physrevapplied.10.024006 fatcat:7jaly4gcijbajenlcrrtiqohga

Colors of Luminous Bulges in Cluster MS 1054-03 and Field Galaxies at Redshiftsz ~ 0.83

David C. Koo, Susmita Datta, Christopher N. A. Willmer, Luc Simard, Kim-Vy Tran, Myungshin Im
2005 Astrophysical Journal  
Moreover, these very red colors appear to be independent of environment, pbulge luminosity, pdisk color, and pbulge fraction.  ...  Our key finding is that luminous pbulges are very red with restframe U-B ~ 0.45, while predicted colors are bluer by 0.20 mag.  ...  We thank A. Metevier, J. Harker, G. Illingworth, P. van Dokkum, and K. Gebhardt for their help and useful discussions and two anonymous referees for constructive criticisms.  ... 
doi:10.1086/498707 fatcat:w3zzzljfrrczxpibfhpdlvzsvi

Measuring the end-to-end performance of digital video systems

S. Wolf
1997 IEEE transactions on broadcasting  
Telecommunications -Digital Transport of One-Way Video Signals -Parameters for Objective Performance Assessment."  ...  The parameters are technology-independent and may be used to measure the performance of a wide range of digital video compression, storage, and transmission systems.  ...  Traditional performance parameters have relied on the "constancy" of a video system's performance for different input scenes.  ... 
doi:10.1109/11.632940 fatcat:ajxxegaf4ra3rmcsuec7urpxtq

Image color correction, enhancement, and editing [article]

Mahmoud Afifi
2021 arXiv   pre-print
Afterward, we discuss another scenario of correcting and editing image colors, where we present a set of methods to correct and edit WB settings for images that have been improperly white-balanced by the  ...  As white balance (WB) is one of the major procedures applied by the ISP for color correction, this thesis presents two different methods for ISP white balancing.  ...  We then presented a survey of prior work for color constancy, enhancement, and editing in Chapter 3.  ... 
arXiv:2107.13117v1 fatcat:uf6qv7iux5hqxmgxxb4olvvtzy

Time-Warp–Invariant Neuronal Processing

Robert Gütig, Haim Sompolinsky, Michael Robert DeWeese
2009 PLoS Biology  
on a standard benchmark speech-recognition task.  ...  We propose a novel spike-based learning rule for synaptic conductances that adjusts the degree of synaptic shunting to the temporal processing requirements of a given task.  ...  We tested this model on a digit-recognition benchmark task with the TI46 database [24] .  ... 
doi:10.1371/journal.pbio.1000141 pmid:19582146 pmcid:PMC2701607 fatcat:bubejt5bxbcjrcufyrmexoo2k4
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