Results 31 to 40 of about 254,430 (319)
Axioms, 2022 Most time series from real-world processes are stained with noise. Therefore, much attention should be paid to data noise removal techniques. In this study, we use the family of biorthogonal wavelet, high-pass, and low-pass filters, to investigate the ...
Mahboubeh Molavi-Arabshahi +4 more
doaj +1 more source
Medical Image Retrieval Using Transforms [PDF]
Applied Medical Informatics, 2013 The purpose of this study is to access the stability of transformation methods for medical image analysis. The reason for image retrieval is due to the increase in acquisition of images.
Mannivannan VASUKI +1 more
doaj
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
S2LET: A code to perform fast wavelet analysis on the sphere [PDF]
, 2012 We describe S2LET, a fast and robust implementation of the scale-discretised wavelet transform on the sphere. Wavelets are constructed through a tiling of the harmonic line and can be used to probe spatially localised, scale-depended features of signals ...
Leistedt, B. +3 more
core +3 more sources
Maximum-entropy image reconstruction using wavelets [PDF]
, 2003 Wavelet functions allow the sparse and efficient representation of a signal at different scales. Recently the application of wavelets to the denoising of maps of cosmic microwave background (CMB) fluctuations has been proposed. The maximum-entropy method
Hobson, M. P. +2 more
core +2 more sources
Continuous and Discrete Wavelet Transforms Associated with Hermite Transform
International Journal of Analysis and Applications, 2020 In this paper, we accomplished the concept of continuous and discrete Hermite wavelet transforms. We also discussed some basic properties of Hermite wavelet transform.
C. P. Pandey, Pranami Phukan
doaj
Blind digital speech watermarking based on Eigen-value quantization in DWT
Journal of King Saud University: Computer and Information Sciences, 2015 This paper presents a new blind digital speech watermarking technique based on Eigen-value quantization in Discrete Wavelet Transform. Initially, each frame of the digital speech was transformed into the wavelet domain by applying Discrete Wavelet ...
Mohammad Ali Nematollahi +2 more
doaj +1 more source
COMPARISON COMPRESSION PROPERTIES DWT WITH FB 5/3 AND FB 9/7 [PDF]
Acta Electrotechnica et Informatica, 2019 The suitability of 2-dimensional Discrete Wavelet Transform (2D DWT) as a tool in image and video compression is nowadays indisputable. Wavelet based techniques such as JPEG2000 for image compression has a lot more to offer than conventional methods in
Ondrej KOVÁČ +3 more
doaj +1 more source
Two Versions of Dunkl Linear Canonical Wavelet Transforms and Applications
MathematicsAmong the class of generalized Fourier transformations, the linear canonical transform is of crucial importance, mainly due to its higher degrees of freedom compared to the conventional Fourier and fractional Fourier transforms.
Saifallah Ghobber, Hatem Mejjaoli
doaj +1 more source
Open Physics, 2018 This paper describes the combination of discrete wavelet transforms (DWT) and artificial intelligence (AI), which are efficient techniques to identify the type of inrush current, analyze the origin and possible cause on the capacitor bank switching.
Patcharoen Theerasak +3 more
doaj +1 more source