Results 31 to 40 of about 339,808 (261)

An encryption algorithm for vector maps based on the Gaussian random and Haar transform

open access: yesJournal of Spatial Science, 2021
Security of vector maps is of importance in the community of geographic information sciences. Although some encryption techniques can protect vector maps from piracy, they need to decrypt the entire map in order to extract parts of the data, which ...
Xiaolong Wang   +4 more
semanticscholar   +1 more source

Coefficients of multiple Fourier-Haar series and variational modulus of continuity

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2023
In this paper, we introduce the concept of a variational modulus of continuity for functions of several variables, give an estimate for the sum of the coefficients of a multiple Fourier-Haar series in terms of the variational modulus of continuity, and ...
T.B. Akhazhanov   +3 more
doaj   +1 more source

Image Compression using Haar and Modified Haar Wavelet Transform

open access: yesTikrit Journal of Engineering Sciences, 2011
Efficient image compression approaches can provide the best solutions to the recent growth of the data intensive and multimedia based applications. As presented in many papers the Haar matrix–based methods and wavelet analysis can be used in various ...
Mohannad Abid Shehab Ahmed   +2 more
doaj   +1 more source

Hierarchical method for cataract grading based on retinal images using improved Haar wavelet [PDF]

open access: yesInformation Fusion, 2019
Cataracts, which are lenticular opacities that may occur at different lens locations, are the leading cause of visual impairment worldwide. Accurate and timely diagnosis can improve the quality of life of cataract patients.
Lvchen Cao   +4 more
semanticscholar   +1 more source

A financial option perspective on energy security and strategic storage

open access: yesEnergy Strategy Reviews, 2019
On the whole, research into energy security falls into one of three perspectives: The political perspective, the engineering and geologic perspective, or the economic perspective emphasising market resilience. Common to these perspectives is the emphasis
Lawrence Haar, Laura N. Haar
doaj   +1 more source

Digital medicine: the next big leap advancing cardiovascular science

open access: yesBMC Cardiovascular Disorders, 2023
Solid clinical and academic leadership remains necessary to ensure that healthcare based on digital technologies is relevant, meaningful, and stands on the best possible evidence.
Alexander Kharlamov, Morten Lamberts
doaj   +1 more source

Analisis Perbandingan Kompresi Haar Wavelet Transform dengan Embedded Zerotree Wavelet pada Citra

open access: yesJurnal Elkomika, 2015
ABSTRAKKompresi data merupakan salah satu teknologi pemicu revolusi multimedia. Haar Wavelet mampu merepresentasikan ciri tekstur dan bentuk, sedangkan Embedded Zerotree Wavelet (EZW) mampu menyusun bit-bit menurut tingkat prioritas, sehingga mampu ...
LEDYA NOVAMIZANTI, ADRIAN KURNIA
doaj   +1 more source

Comparative Analysis of Human Detection using Depth Data and RGB Data with Kalman Filter: A Study on Haar and LBP Methods

open access: yesJOIV: International Journal on Informatics Visualization
Accurate human detection in video streams with occlusions, illumination variances, and varying distances is crucial for various applications, including surveillance, human-computer interaction, and robotics. This study investigates the performance of two
Fira Aulia   +2 more
doaj   +1 more source

Dynamics of flight of the fragments with higher order Haar wavelet method [PDF]

open access: yesProceedings of the Estonian Academy of Sciences
Fragments that have an irregular shape and move at high speeds are difficult to assess since experiments require high-tech solutions, and the differential equations that describe the motion cannot be solved analytically.
Lenart Kivistik   +3 more
doaj   +1 more source

Numerical Solution for Linear State Space Systems using Haar Wavelets Method

open access: yesمجلة بغداد للعلوم, 2022
In this research, Haar wavelets method has been utilized to approximate a numerical solution for Linear state space systems. The solution technique is used Haar wavelet functions and Haar wavelet operational matrix with the operation to transform the ...
Waleeda swaidan ali, Haleema S. Ali
doaj   +1 more source

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