Results 31 to 40 of about 697,010 (291)
ICTACT 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
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Capacity Results on Multiple-Input Single-Output Wireless Optical Channels
, 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
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A Cauchy-density-based rate controller for H.264/AVC in low-delay environments [PDF]
, 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
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Pertanika Journal of Science and Technology, 2022 Audio steganography is implemented based on three main features: capacity, robustness, and imperceptibility, but simultaneously implementing them is still a challenge. Embedding data at the Least Significant Bit (LSB) of the audio sample is one of the most implemented audio steganography methods because the method will give high capacity and ...
Muhammad Harith Noor Azam +2 more
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Xstream-x264: Real-time H.264 streaming with cross-layer integration [PDF]
, 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
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Apply wavelet packet soft threshold noise reduction method to aviation gamma energy spectrum
He 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
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Application of energy difference spectrum of singular value in signal noise reductio
Gong-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
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The optimal design of a binaural sparse-aperture system
Results 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
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The Correspondence between Convergence Peaks from Weak Lensing and Massive Dark Matter Haloes
, 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
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A Two-Dimensional Signal Space for Intensity-Modulated Channels [PDF]
, 2012 A two-dimensional signal space for intensity- modulated channels is presented. Modulation formats using this signal space are designed to maximize the minimum distance between signal points while satisfying average and peak power constraints. The uncoded,
Agrell, Erik +3 more
core +2 more sources