Results 41 to 50 of about 2,154,721 (280)

Comparison of Image Compressions: Analog Transformations

Proceedings, 2020
A comparison between the four most used transforms, the discrete Fourier transform (DFT), discrete cosine transform (DCT), the Walsh–Hadamard transform (WHT) and the Haar-wavelet transform (DWT), for the transmission of analog images, varying their ...
Jose Balsa
doaj   +1 more source

High-Capacity Image Steganography Based on Discrete Hadamard Transform

IEEE Access, 2022
High capacity and high imperceptibility are the primary targets for ideal image steganography. For the traditional transform-based schemes, the main challenge is to balance the imperceptibility, hiding capacity, and running efficiency.
Ying-Qian Zhang, Kuan Zhong, Xing-Yuan Wang   +2 more
doaj   +1 more source

Characterization of Basic 5-Value Spectrum Functions Through Walsh-Hadamard Transform

IEEE Transactions on Information Theory, 2021
The first and the third authors recently introduced a spectral construction of plateaued and of 5-value spectrum functions. In particular, the design of the latter class requires a specification of integers $\{W(u):u\in \mathbb {F}^{n}_{2}\}$ , where ...
S. Hodžić, P. Horák, E. Pasalic
semanticscholar   +1 more source

METHODS FOR DETECTING AND SELECTING AREAS ON TEXTURE BIOMEDICAL IMAGES OF BREAST CANCER

Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2022
This paper is devoted to topical issues - the development of methods for analyzing texture images of breast cancer. The main problem that is resolved in the article is that the requirements for the results of pre-processing are increasing.
Ainur Orazayeva , Jamalbek Tussupov, Waldemar Wójcik, Sergii Pavlov, Gulzira Abdikerimova, Liudmyla Savytska   +5 more
doaj   +1 more source

Relative importance of genotype, gene expression, and DNA methylation on complex traits in perennial ryegrass

The Plant Genome, Volume 15, Issue 4, December 2022., 2022
Abstract The growing demand for food and feed crops in the world because of growing population and more extreme weather events requires high‐yielding and resilient crops. Many agriculturally important traits are polygenic, controlled by multiple regulatory layers, and with a strong interaction with the environment.
Marta Malinowska, Anja Karine Ruud, Just Jensen, Simon Fiil Svane, Abraham George Smith, Andrea Bellucci, Ingo Lenk, Istvan Nagy, Mattia Fois, Thomas Didion, Kristian Thorup‐Kristensen, Christian Sig Jensen, Torben Asp   +12 more
wiley   +1 more source

Compressive Optical Spectrometry Based on Sequency-Ordered Hadamard Transform

IEEE Photonics Journal, 2020
We propose a compressive Hadamard transform spectrometer (CHTS) based on the energy compaction trait of the sequency-ordered Hadamard matrix (SOHM), in which the spectrum is reconstructed from compressed measurements using simple matrix multiplication ...
Yi Zhang, Jian Kang, Chao-Mao Hsieh, Quan Liu   +3 more
doaj   +1 more source

Optical full Hadamard matrix multiplexing and noise effects [PDF]

, 2009
Hadamard multiplexing provides a considerable SNR boost over additive random noise but Poisson noise such as photon noise reduces the boost. We develop the theory for full H-matrix Hadamard transform imaging under additive and Poisson noise effects.
Burling-Claridge, G. Robert, Cree, Michael J., Künnemeyer, Rainer, Streeter, Lee   +3 more
core   +2 more sources

New fast Walsh–Hadamard–Hartley transform algorithm [PDF]

, 2023
This paper presents an efficient fast Walsh–Hadamard–Hartley transform (FWHT) algorithm that incorporates the computation of the Walsh-Hadamard transform (WHT) with the discrete Hartley transform (DHT) into an orthogonal, unitary single fast transform ...
Hamood, Mounir Taha, Mardan, Suha Suliman   +1 more
core   +4 more sources

A hybrid classical-quantum algorithm for digital image processing [PDF]

Quantum Inf Process 22, 3 (2023), 2022
A hybrid classical-quantum approach for evaluation of multi-dimensional Walsh-Hadamard transforms and its applications to quantum image processing are proposed. In this approach, multidimensional Walsh-Hadamard transforms are obtained using quantum Hadamard gates (along with state-preparation, shifting, scaling and measurement operations). The proposed
arxiv   +1 more source

A novel noise reduction technique for underwater acoustic signals based on dual‐path recurrent neural network

IET Communications, Volume 17, Issue 2, Page 135-144, January 2023., 2023
Abstract A dual‐path recurrent neural network model is proposed to achieve noise reduction of underwater acoustic signals, which consists of three steps: feature extraction, mask separation, and signal recovery. For feature extraction, we use a multi‐scale convolutional neural network to extract higher‐order non‐linear features of the input signal and ...
Yongqiang Song, Feng Liu, Tongsheng Shen
wiley   +1 more source