Results 21 to 30 of about 90,796,744 (298)

Cellular automata-based approach for salt-and-pepper noise filtration

open access: yesJournal of King Saud University: Computer and Information Sciences, 2022
Application of cellular automata (CA) to digital image processing has achieved considerable attention in last several years. CA are now employed in noise filtration of digital images; particularly many CA-based impulse noise filters have been proposed ...
Zubair Jeelani, Fasel Qadir
doaj   +1 more source

Adaptive Image Thresholding Based on the Peak Signal-to-noise Ratio

open access: yesResearch Journal of Applied Sciences, Engineering and Technology, 2014
L'objectif de cette recherche est d'améliorer un algorithme de seuillage basé sur le rapport de bruit du signal de crête. Le seuillage est une étape critique dans la reconnaissance des formes et a un effet significatif sur les étapes ultérieures des applications d'imagerie.
Farshid PirahanSiah   +2 more
openaire   +1 more source

The relationship between acceptable noise level and electrophysiologic auditory brainstem and cortical signal to noise ratios

open access: yesAudiology Research, 2014
The following objectives of the study were formulated: i) to investigate differences in measured signal to noise ratios while recording speech-evoked auditory brainstem response (cABR) and cortical late latency response (LLR) in low and high acceptable ...
Hemanth N. Shetty   +2 more
doaj   +1 more source

Spatial Spectral Enhancement of Broadband Signals in a Towed Array Using Deconvolved Subband Peak Energy Detection

open access: yesRemote Sensing, 2022
Conventional energy detection is a robust method that is usually applied to underwater broadband acoustic signal processing for towed arrays. Due to its low resolution, the weak target detection performance of conventional energy detection is severely ...
Anbang Zhao   +4 more
doaj   +1 more source

Two novel nonlinear companding schemes with iterative receiver to reduce PAPR in multi-carrier modulation systems [PDF]

open access: yes, 2006
Companding transform is an efficient and simple method to reduce the Peak-to-Average Power Ratio (PAPR) for Multi-Carrier Modulation (MCM) systems.
Guo, P, Yao, W, Qu, D, Song, Y, Jiang, T
core   +1 more source

Signal-to-noise ratio (SNR±SD dB), excess attenuation (EA±SD dB) and tail-to-signal ratio (TSR±SD dB) for combined male and female song phrases in the forest, shrubs and along the stream.

open access: yes, 2022
Signal-to-noise ratio (SNR±SD dB), excess attenuation (EA±SD dB) and tail-to-signal ratio (TSR±SD dB) for combined male and female song phrases in the forest, shrubs and along the stream.
Tomasz S. Osiejuk (10287277)   +3 more
core   +1 more source

PERFORMANCE EVALUATION AND COMPARATIVE ANALYSIS OF WATERMARKING ALGORITHM BASED ON ADAPTIVE PREDICTION METHOD

open access: yesICTACT Journal on Image and Video Processing, 2018
Now a days digital watermarking appeared as a solution for copyright detection, protection and maintenance of important data. This paper deals with a new reversible watermarking algorithm based on adaptive prediction error expansion, which can recover ...
Chetna Sharma, Neeraj Jain
doaj   +1 more source

Signal enhancement by time-frequency peak filtering

open access: yes, 2003
Time-frequency peak filtering (TFPF) allows the reconstruction of signals from observations corrupted by additive noise by encoding the noisy signal as the instantaneous frequency (IF) of a frequency modulated (FM) analytic signal.
Boashash, Boualem   +3 more
core   +1 more source

Signal-to-noise-ratio of the central bile ducts on T2 MRCP and T1 3D MRC.

open access: yes, 2018
Signal-to-noise-ratio of the central bile ducts on T2 MRCP and T1 3D MRC.
Marcus Richard Makowski (5721284)   +7 more
core   +1 more source

Lower signal-to-noise ratio leads to decreased peak assignment.

open access: yes, 2015
a-e) Fits of simulated data with signal-to-noise ratio: a) 5 b) 10, c) 25, d) 75 and e) 244. f) Input simulated NMR spectra showing the true underlying peaks that make up the spectra.
Travis S. Hughes (779495)   +3 more
core   +1 more source

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