Blind Watermarking of Color Medical Images Using Hadamard Transform and Fractional-Order Moments. [PDF]
Sensors (Basel), 2021 Abdel-Aziz MM +3 more
europepmc +1 more source
British Journal of Mathematical and Statistical Psychology, EarlyView.Abstract Hidden Markov diagnostic classification models capture how students' cognitive attributes evolve over time. This paper introduces a Bayesian Markov chain Monte Carlo algorithm for diagnostic classification models that jointly estimates time‐varying Q matrices, latent attributes, item parameters, attribute class proportions and transition ...
Chen‐Wei Liu
wiley +1 more source
Transform coding of DCT coefficients in video encoder
Tongxin xuebao, 2008 The redundancy among discrete cosine transform（DCT） coefficients in video encoder was found very strong,a method for subband decomposition and transform coding was proposed.Each 8×8 DCT spectrum date of macroblock was regrouped to gather the same ...
WANG Zhong-yuan +3 more
doaj +2 more sources
Second Hankel Determinant for a Class of Analytic Functions Defined by Fractional Derivative
International Journal of Mathematics and Mathematical Sciences, 2008 By making use of the fractional differential operator Ωzλ due to Owa and Srivastava, a class of analytic functions ℛλ(α,ρ) (0≤ρ≤1, 0 ...
A. K. Mishra, P. Gochhayat
doaj +1 more source
IMAGE COMPRESSION BY USING WALSH AND FRAMELET TRANSFORM
Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ, 2019 In this paper, Framelet and Walsh transform are proposed for transformation, and then using arithmetic coding for compress an image. The goal is to achieve higher compression ratio by applying two levels Framelet transform (FLT), and then apply 2D Walsh ...
Nora H. Sultan
doaj +1 more source
PSHead: 3D Head Reconstruction from a Single Image with Diffusion Prior and Self‐Enhancement
Computer Graphics Forum, EarlyView.We introduce PSHead, a coarse‐to‐fine framework guided by both object and face priors, to produce a Gaussian‐based 3D avatar for a single frontal‐view reference image. In the coarse stage, we create an initial 3D representation by applying diffusion models trained for general object generation, using Score Distillation Sampling losses over novel views.
Jing Yang +4 more
wiley +1 more source
Matrix Factorization and Some Fast Discrete Transforms
AxiomsIn 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
The Extended Hadamard Transform: Sensitivity-Enhanced NMR Experiments Among Labile and Non-Labile 1 Hs of SARS-CoV-2-derived RNAs. [PDF]
Chemphyschem, 2022 Kim J +9 more
europepmc +1 more source
Faster Walsh-Hadamard Transform and Matrix Multiplication over Finite Fields using Lookup Tables [PDF]
, 2022 Josh Alman
openalex +1 more source
Innovation, Licensing, and Competition: Evidence From Genetically Engineered Crops
The Journal of Industrial Economics, EarlyView.ABSTRACT We provide a novel empirical analysis of the role of technology licensing, between competitors, for genetically engineered (GE) traits in the US seed industry. We extend the standard differentiated‐product Bertrand pricing model to include trait licensing, which permits us to recover marginal costs and (otherwise unobserved) royalty rates ...
GianCarlo Moschini, Edward D. Perry
wiley +1 more source