Results 41 to 50 of about 696,668 (189)

Face Image Generation and Enhancement Using Conditional Generative Adversarial Network

open access: yesIJCCS (Indonesian Journal of Computing and Cybernetics Systems), 2022
The accuracy and speed of a single image super-resolution using a convolutional neural network is often a problem in improving finer texture details when using large enhancement factors.
Ainil Mardiah   +2 more
doaj   +1 more source

Capacity Results on Multiple-Input Single-Output Wireless Optical Channels

open access: yes, 2017
This paper derives upper and lower bounds on the capacity of the multiple-input single-output free-space optical intensity channel with signal-independent additive Gaussian noise subject to both an average-intensity and a peak-intensity constraint.
Moser, Stefan M.   +2 more
core   +1 more source

Improved Watermarking Scheme Using Decimal Sequences [PDF]

open access: yes, 2005
This paper presents watermarking algorithms using d-sequences so that the peak signal to noise ratio (PSNR) is maximized and the distortion introduced in the image due to the embedding is minimized. By exploiting the cross correlation property of decimal
Shaik, Ashfaq N
core   +3 more sources

Xstream-x264: Real-time H.264 streaming with cross-layer integration [PDF]

open access: yes, 2011
We present Xstream-x264: a real-time cross-layer video streaming technique implemented within a well known open-source H.264 video encoder tool x264.
Boreli, Roksana   +2 more
core   +2 more sources

Apply wavelet packet soft threshold noise reduction method to aviation gamma energy spectrum

open access: yesHe jishu, 2022
BackgroundWith the continuous development of nuclear technology, radioactive material exploration requires higher and higher detection accuracy of aerial gamma energy spectrometer, meanwhile, the wavelet packet soft threshold noise reduction method has ...
ZHANG Song   +7 more
doaj   +1 more source

A Cauchy-density-based rate controller for H.264/AVC in low-delay environments [PDF]

open access: yes, 2009
The accuracy of the Cauchy probability density function for modeling of the discrete cosine transform coefficient distribution has already been proved for the frame layer of the rate control subsystem of a hybrid video coder.
de-Frutos-López, Manuel   +3 more
core   +1 more source

Application of energy difference spectrum of singular value in signal noise reductio

open access: yesGong-kuang zidonghua, 2014
In view of problem that the order of effective rank of matrix reconstruction is difficult to determine in singular value decomposition for noise reduction, a novel signal noise reduction method based on energy difference spectrum of singular value was ...
ZHANG Wenbi
doaj   +1 more source

The optimal design of a binaural sparse-aperture system

open access: yesResults in Physics, 2020
Optical sparse-aperture (OSA) can greatly improve the spatial resolution of optical system. However, its optical designs are complex. This paper proposes a binaural sparse-aperture system with a simple and symmetrical structure, which is composed of ...
Luting Zhang   +5 more
doaj   +1 more source

Noisy weak-lensing convergence peak statistics near clusters of galaxies and beyond

open access: yes, 2010
Taking into account noise from intrinsic ellipticities of source galaxies, in this paper, we study the peak statistics in weak-lensing convergence maps around clusters of galaxies and beyond.
Albrecht   +22 more
core   +1 more source

The Correspondence between Convergence Peaks from Weak Lensing and Massive Dark Matter Haloes

open access: yes, 2018
The convergence peaks, constructed from galaxy shape measurement in weak lensing, is a powerful probe of cosmology as the peaks can be connected with the underlined dark matter haloes.
Fan, Zuhui   +6 more
core   +1 more source

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