Results 21 to 30 of about 323,867 (242)

Variational semi-blind sparse deconvolution with orthogonal kernel bases and its application to MRFM [PDF]

open access: yes, 2014
We present a variational Bayesian method of joint image reconstruction and point spread function (PSF) estimation when the PSF of the imaging device is only partially known.
Se Un Parka   +5 more
core   +1 more source

Focused Blind Deconvolution

open access: yesIEEE Transactions on Signal Processing, 2019
We introduce a novel multichannel blind deconvolution (BD) method that extracts sparse and front-loaded impulse responses from the channel outputs, i.e., their convolutions with a single arbitrary source. A crucial feature of this formulation is that it doesn't encode support restrictions on the unknowns, unlike most prior work on BD. The indeterminacy
Pawan Bharadwaj   +2 more
openaire   +3 more sources

Blind Single Channel Deconvolution using Nonstationary Signal Processing [PDF]

open access: yes, 2003
Blind deconvolution is fundamental in signal processing applications and, in particular, the single channel case remains a challenging and formidable problem. This paper considers single channel blind deconvolution in the case where the degraded observed
Rayner, Peter J. W.   +1 more
core   +1 more source

Research on Fault Extraction Method of CYCBD Based on Seagull Optimization Algorithm

open access: yesShock and Vibration, 2021
Maximum cyclostationarity blind deconvolution (CYCBD) can recover the periodic impulses from mixed fault signals comprised by noise and periodic impulses. In recent years, blind deconvolution has been widely used in fault diagnosis.
Qianqian Zhang   +4 more
doaj   +1 more source

Blind deconvolution of sparse pulse sequences under a minimum distance constraint: a partially collapsed Gibbs sampler method [PDF]

open access: yes, 2012
For blind deconvolution of an unknown sparse sequence convolved with an unknown pulse, a powerful Bayesian method employs the Gibbs sampler in combination with a Bernoulli–Gaussian prior modeling sparsity.
Kail, Georg   +3 more
core   +1 more source

Blind Ptychography via Blind Deconvolution

open access: yesCoRR, 2023
arXiv admin note: text overlap with arXiv:1606.04933 by other ...
openaire   +2 more sources

Semi-blind sparse image reconstruction with application to MRFM [PDF]

open access: yes, 2012
We propose a solution to the image deconvolution problem where the convolution kernel or point spread function (PSF) is assumed to be only partially known.
Hero, Alfred O.   +2 more
core   +1 more source

Blind signal deconvolution based on pulsed neuron model [PDF]

open access: yesITM Web of Conferences, 2019
In this paper, we consider the vector-matrix model of a pulsed neuron, focused on solving problems of digital signal processing. We extend the application domain of the model to the blind signal deconvolution problem.
Bondarev Vladimir
doaj   +1 more source

New Lagrange Multipliers for the Blind Adaptive Deconvolution Problem Applicable for the Noisy Case

open access: yesEntropy, 2016
Recently, a new blind adaptive deconvolution algorithm was proposed based on a new closed-form approximated expression for the conditional expectation (the expectation of the source input given the equalized or deconvolutional output) where the output ...
Monika Pinchas
doaj   +1 more source

Source Quantitative Identification by Reference-Based Cubic Blind Deconvolution Algorithm

open access: yesChinese Journal of Mechanical Engineering, 2023
The semi-blind deconvolution algorithm improves the separation accuracy by introducing reference information. However, the separation performance depends largely on the construction of reference signals.
Xin Luo   +3 more
doaj   +1 more source

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