Results 51 to 60 of about 1,090,025 (303)
Discrete orthogonal transform in signal processing based on the sequence of Fibonacci-Rademacher
Tạp chí Khoa học Đại học Mở Thành phố Hồ Chí Minh - Kỹ thuật và Công nghệ, 2013 The orthogonal discrete transform has been used in anlyzing and transforming image by Walsh, Rademacher, or the combination Walsh-Fibonacci, Haar-Fibonnaci. The efficient of these algorithms has been showed in the case of wavelet transformation.
Trương Hoàng Vinh
doaj
Remarks on numerical approximation of Volterra integral equations by Walsh–Hadamard transform
Results in Applied MathematicsWalsh 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
Analytical Science Advances, 2022 The compressed sensing (CS) theory requires the signal to be sparse under some transform. For most signals (e.g., speech and photos), the non‐adaptive transform bases, such as discrete cosine transform (DCT), discrete Fourier transform (DFT), and Walsh ...
Yinsheng Zhang +3 more
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Scale‐space image analysis for mapping spotted knapweed in grassland ecosystems
Applications in Plant Sciences, EarlyView.Abstract Premise This study investigates the value of scale‐space representations of spatial features for the identification and mapping of invasive plants using high‐resolution multispectral imagery. Scale‐space representations combine the two‐dimensional spatial domain with a third dimension representing spatial scale, such that features can be ...
Shohreh Sahebi, David J. Hill
wiley +1 more source
Drivers of tail evolution in squamates and their implications for the fossorial origin of snakes
The Anatomical Record, EarlyView.Abstract The axial skeleton serves as the primary structural support in all vertebrates and is subdivided into five distinct regions: cervical, thoracic, lumbar, sacral, and caudal. Relaxation of constraints acting on the terminal end of the axial skeleton has led to remarkable variation in caudal vertebrae number across Squamata.
Olivia Binfield +2 more
wiley +1 more source
Improved l1-SPIRiT using 3D walsh transform-based sparsity basis [PDF]
, 2014 l1-SPIRiT is a fast magnetic resonance imaging (MRI) method which combines parallel imaging (PI) with compressed sensing (CS) by performing a joint l1-norm and l2-norm optimization procedure.
Guo, He +5 more
core +1 more source
Optimising Linear Key Recovery Attacks with Affine Walsh Transform Pruning [PDF]
, 2022 International audienceLinear cryptanalysis [25] is one of the main families of keybrecovery attacks on block ciphers. Several publications [16,19] have drawn attention towards the possibility of reducing their time complexity using the fast Walsh ...
Florez Gutierrez, Antonio +1 more
core +1 more source
Single Pixel Imaging Based on Bicubic Interpolation Walsh Transform Matrix
IEEE AccessSingle pixel imaging is a new method, but imaging quality and speed are the main factors affecting its practicality. Building upon the attributes of the random measurement and deterministic matrices, a Walsh transformation matrix with bicubic ...
Wenying Zhang, Shanshan Jia, Haoran Zhu
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A Novel Autofocus Measure Based on Weighted Walsh-Hadamard Transform
IEEE Access, 2019 The autofocus measure plays an important role in passive digital imaging systems. However, most of the existing methods are more sensitive to the noise. In order to overcome this drawback, we proposed a novel autofocus measure based on the weighted Walsh-
Liqiang Guo, Xiang Cao, Lian Liu
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What Makes an “Ideal” Cell Line for Recombinant Adeno‐Associated Virus Production?
Biotechnology and Bioengineering, EarlyView.Several host cell types have been used to produce rAAVs to date. Cell line‐specific traits that are beneficial in the context of rAAV manufacturing are reviewed here, with the goal of developing a consensus on the ‘ideal’ characteristics that an rAAV production host should possess (created with Biorender.com).
James Conheady +6 more
wiley +1 more source