Results 21 to 30 of about 18,243 (295)

Vaguelette-Wavelet Deconvolution via Compressive Sampling

open access: yesIEEE Access, 2019
Vaguelette-wavelet deconvolution (VWD) is known as a transform-based image restoration technique that involves applying wavelet-domain denoising to an observed image, followed by the Fourier-domain blur inversion, which can prevent noise amplification in
Chihiro Tsutake, Toshiyuki Yoshida
doaj   +1 more source

Compressive Sampling with Multiple Bit Spread Spectrum-Based Data Hiding

open access: yesApplied Sciences, 2020
We propose a novel data hiding method in an audio host with a compressive sampling technique. An over-complete dictionary represents a group of watermarks.
Gelar Budiman   +2 more
doaj   +1 more source

A Light Field Sparse and Reconstruction Framework for Improving Rendering Quality

open access: yesIEEE Access, 2020
We present a sparse reconstruction light field (SRLF) framework using compressed sensing theory. Light field signals have sparsity in some specific phenomena, such as nonocclusions, smooth surfaces and texture uniformity.
Hong Zhang   +6 more
doaj   +1 more source

Photonics-enabled sub-Nyquist radio frequency sensing based on temporal channelization and compressive sensing [PDF]

open access: yes, 2014
A novel approach to sensing broadband radio frequency (RF) spectrum beyond the Nyquist limit based on photonic temporal channelization and compressive sensing is proposed.
Wang, Chao   +3 more
core   +1 more source

Sampling Time Adaptive Single-Photon Compressive Imaging

open access: yesIEEE Photonics Journal, 2019
We propose a time-adaptive sampling method and demonstrate a sampling-time-adaptive single-photon compressive imaging system. In order to achieve self-adapting adjustment of sampling time, the theory of threshold of light intensity estimation accuracy is
Hui Wang   +4 more
doaj   +1 more source

Compressive Sampling Using a Pushframe Camera [PDF]

open access: yesOSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP), 2021
Pushframe parallellized single pixel camera imaging utilizes scanning motion to apply linear sampling masks to rapidly compressively sense a scene. We demonstrate strongly performing static binarized noiselet mask designs, tailored for pushframe hardware.
Bennett, Stuart   +6 more
openaire   +6 more sources

A Novel Iterative Thresholding Algorithm Based on Plug-and-Play Priors for Compressive Sampling

open access: yesFuture Internet, 2017
We propose a novel fast iterative thresholding algorithm for image compressive sampling (CS) recovery using three existing denoisers—i.e., TV (total variation), wavelet, and BM3D (block-matching and 3D filtering) denoisers.
Lingjun Liu, Zhonghua Xie, Cui Yang
doaj   +1 more source

Parameter Estimation Algorithm of Frequency-Hopping Signal in Compressed Domain Based on Improved Atomic Dictionary

open access: yesSensors, 2023
This paper considers the problem of estimating the parameters of a frequency-hopping signal under non-cooperative conditions. To make the estimation of different parameters independently of each other, a compressed domain frequency-hopping signal ...
Weipeng Zhu   +3 more
doaj   +1 more source

Compressed sensing applied to modeshapes reconstruction [PDF]

open access: yes, 2011
Modal analysis classicaly used signals that respect the Shannon/Nyquist theory. Compressive sampling (or Compressed Sampling, CS) is a recent development in digital signal processing that offers the potential of high resolution capture of physical ...
Dimitri Bettebghor   +3 more
core   +1 more source

Information-Theoretic Characterization and Undersampling Ratio Determination for Compressive Radar Imaging in a Simulated Environment

open access: yesEntropy, 2015
Assuming sparsity or compressibility of the underlying signals, compressed sensing or compressive sampling (CS) exploits the informational efficiency of under-sampled measurements for increased efficiency yet acceptable accuracy in information gathering,
Jingxiong Zhang   +3 more
doaj   +1 more source

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