Results 31 to 40 of about 890,170 (340)

Near-Optimal Graph Signal Sampling by Pareto Optimization

open access: yesSensors, 2021
In this paper, we focus on the bandlimited graph signal sampling problem. To sample graph signals, we need to find small-sized subset of nodes with the minimal optimal reconstruction error.
Dongqi Luo   +4 more
doaj   +1 more source

lop-DWI: A Novel Scheme for Pre-Processing of Diffusion Weighted Images in the Gradient Direction Domain

open access: yesFrontiers in Neurology, 2015
We describe and evaluate a pre-processing method based on a periodic spiral sampling of diffusion gradient directions for high angular resolution diffusion magnetic resonance imaging.
Farshid eSepehrband   +12 more
doaj   +1 more source

Generalized rejection sampling schemes and applications in signal processing [PDF]

open access: yesSignal Processing, 2010
Bayesian methods and their implementations by means of sophisticated Monte Carlo techniques, such as Markov chain Monte Carlo (MCMC) and particle filters, have become very popular in signal processing over the last years. However, in many problems of practical interest these techniques demand procedures for sampling from probability distributions with ...
Martino, Luca, Míguez, Joaquín
openaire   +3 more sources

Artifacts with uneven sampling of red noise [PDF]

open access: yes, 2006
The vast majority of sampling systems operate in a standard way: at each tick of a fixed-frequency master clock a digitizer reads out a voltage that corresponds to the value of some physical quantity and translates it into a bit pattern that is either ...
B. B. Mandelbrot   +9 more
core   +2 more sources

Adaptive Rate Sampling and Filtering Based on Level Crossing Sampling

open access: yesEURASIP Journal on Advances in Signal Processing, 2009
The recent sophistications in areas of mobile systems and sensor networks demand more and more processing resources. In order to maintain the system autonomy, energy saving is becoming one of the most difficult industrial challenges, in mobile computing.
Saeed Mian Qaisar   +2 more
doaj   +1 more source

Design of a High-Speed Signal Processing System for Underwater LiDAR Based on Complete Waveform Sampling

open access: yesEngineering Proceedings, 2023
The complex and changing underwater environment, along with the presence of various suspended particles, leads to laser attenuation and backward scattering. As a result, the detection capabilities of underwater LiDAR are significantly limited. To address
Guangbo Xu
doaj   +1 more source

Sampling Sparse Signals on the Sphere: Algorithms and Applications [PDF]

open access: yes, 2015
We propose a sampling scheme that can perfectly reconstruct a collection of spikes on the sphere from samples of their lowpass-filtered observations. Central to our algorithm is a generalization of the annihilating filter method, a tool widely used in ...
Dokmanic, Ivan, Lu, Yue M.
core   +2 more sources

Wideband Mixed Signal Separation Based on Photonic Signal Processing

open access: yesTelecom, 2021
The growing needs for high-speed and secure communications create an increasing challenge to the contemporary framework of signal processing. The coexistence of multiple high-speed wireless communication systems generates wideband interference.
Yang Qi, Taichu Shi, Ben Wu
doaj   +1 more source

Study on real-time detection of laser drilling in transparent hard and brittle materials by an external electric field

open access: yesMeasurement: Sensors, 2021
This research proposes to applied external electric field detect to the laser processing, Design and analysis of detection electrodes to detect plasma induced by laser processing, and then transmit the plasma signal to the controller in real time through
Chao-Ching Ho, Jun-Yi Gao
doaj   +1 more source

Rethinking sketching as sampling: A graph signal processing approach

open access: yesSignal Processing, 2020
Submitted to Elsevier Signal ...
Fernando Gama   +3 more
openaire   +3 more sources

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