Results 31 to 40 of about 3,442 (165)

Quantum Computing and a Unified Approach to Fast Unitary Transforms

open access: yes, 2002
A quantum computer directly manipulates information stored in the state of quantum mechanical systems. The available operations have many attractive features but also underly severe restrictions, which complicate the design of quantum algorithms.
Agaian, Sos S., Klappenecker, Andreas
core   +1 more source

Complexity adaptation in H.264/AVC video coder for static cameras [PDF]

open access: yes, 2009
H.264/AVC uses variable block size motion estimation (VBSME) to improve coding gain. However, its complexity is significant and fixed regardless of the required quality or of the scene characteristics. In this paper, we propose an adaptive complexity
Kim, Chanyul, O'Connor, Noel E.
core   +1 more source

Matrix Factorization and Some Fast Discrete Transforms

open access: yesAxioms
In this paper, three discrete transforms related to vector spaces over finite fields are studied. For our purposes, and according to the properties of the finite fields, the most suitable transforms are as follows: for binary fields, this is the Walsh ...
Iliya Bouyukliev   +2 more
doaj   +1 more source

Fault Detection for Suspension System of Maglev Trains Based on Historical Health Data

open access: yesIEEE Access, 2020
To overcome the influence of multiple operating conditions for fault detection, this paper proposes a method to detect fault for the suspension system of maglev trains.
Xu Zhou, Ping Wang, Zhiqiang Long
doaj   +1 more source

Remarks on numerical approximation of Volterra integral equations by Walsh–Hadamard transform

open access: yesResults in Applied Mathematics
Walsh functions form a piecewise-constant orthonormal basis that is particularly well-suited for digital computation and signal approximation. Nevertheless, the direct evaluation of Walsh transforms for discrete functions becomes computationally ...
Farrukh Mukhamedov   +3 more
doaj   +1 more source

Super sub-Nyquist single-pixel imaging by means of cake-cutting Hadamard basis sort

open access: yes, 2019
Single-pixel imaging via compressed sensing can reconstruct high-quality images from a few linear random measurements of an object/scene known a priori to be sparse or compressive, by using a point/bucket detector without spatial resolution. Nevertheless,
Yu, Wen-Kai
core   +1 more source

Comparing GFDM With OFDM for Use in 6G Communication From a New Perspective

open access: yesJournal of Electrical and Computer Engineering, Volume 2026, Issue 1, 2026.
The most important challenges facing 6G communication systems are the large amount of data and low latency as compared to previous generations. Therefore, it has become necessary to use advanced technologies to meet the requirements of 6G wireless communication systems.
Mohammed Azher Therib   +2 more
wiley   +1 more source

Semi-automated bed boundary detection and log alignment using fast Walsh–Hadamard transform

open access: yesFrontiers in Earth Science
Depth mismatches between well logs acquired in different runs (e.g., electrical wireline logging (EWL) versus logging while drilling (LWD)) impede stratigraphic correlation and bias reservoir property estimation.
Sushil Acharya   +3 more
doaj   +1 more source

Single-pixel imaging with Morlet wavelet correlated random patterns

open access: yes, 2017
Single-pixel imaging is an indirect imaging technique which utilizes simplified optical hardware and advanced computational methods. It offers novel solutions for hyper-spectral imaging, polarimetric imaging, three-dimensional imaging, holographic ...
Czajkowski, Krzysztof M.   +2 more
core   +2 more sources

Genetic Algorithm based Optimized Image Registration using Fast Walsh Hadamard Transform

open access: yesCVR Journal of Science & Technology, 2019
Numerous medical means are mandatory with accuracy and totality of data about a patient for a doctor for healthcare predictive analytics and so as to treat and take care of their patients’ remedy. Medical image registration practices bestow more affluent diagnosis and medication information to the doctors in stipulating an all-embracing allusion ...
Dr. D Sasikala, Dr. R Neelaveni
openaire   +2 more sources

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