Results 11 to 20 of about 280,124 (300)

Multiresolution Analysis Using Wavelet, Ridgelet, and Curvelet Transforms for Medical Image Segmentation [PDF]

open access: yesInternational Journal of Biomedical Imaging, 2011
The experimental study presented in this paper is aimed at the development of an automatic image segmentation system for classifying region of interest (ROI) in medical images which are obtained from different medical scanners such as PET, CT, or MRI ...
Shadi AlZubi, Naveed Islam, Maysam Abbod
doaj   +2 more sources

On the Hilbert Transform of Wavelets [PDF]

open access: yesIEEE Transactions on Signal Processing, 2011
Appears in IEEE Transactions on Signal Processing, vol. 59, no. 4, pp.
Chaudhury, Kunal Narayan, Unser, Michael
openaire   +4 more sources

Comparative analysis of integer wavelet transforms in reversible data hiding using threshold based histogram modification

open access: yesJournal of King Saud University: Computer and Information Sciences, 2021
In the secured data communication scenario, image based Reversible Data Hiding (RDH) at transform domain is receiving its due popularity now. In research works so far, evaluation of transforms in RDH is very minor compared to that of image coding.
Ahmad Shaik, V. Thanikaiselvan
doaj   +1 more source

The Berkeley Wavelet Transform: A Biologically Inspired Orthogonal Wavelet Transform [PDF]

open access: yesNeural Computation, 2008
We describe the Berkeley wavelet transform (BWT), a two-dimensional triadic wavelet transform. The BWT comprises four pairs of mother wavelets at four orientations. Within each pair, one wavelet has odd symmetry, and the other has even symmetry. By translation and scaling of the whole set (plus a single constant term), the wavelets form a complete ...
Ben D. B. Willmore   +3 more
openaire   +5 more sources

Using effective signal filtering methods to data processing from a fiber-optic temperature sensor [PDF]

open access: yesОмский научный вестник, 2021
The article deals with signal processing of a fiber-optic temperature sensor using extremal filtering and filtering with Wavelet transforms. The aim of this work is to find a way to reduce the response time in a fiber-optic temperature sensor by ...
I. A. Ershov
doaj   +1 more source

Construction of a symmetrical shifl-invariant fractional overcomplete wavelet and its application in bearing fault diagnosis

open access: yes工程科学学报, 2015
This article introduces the design of symmetrical approximately shift-invariant fractional overcomplete wavelet transforms. First, a design scheme for the symmetrical low-pass filter with minimum-length was proposed, and then the corresponding highpass ...
SHEN Zheng-wei, SHI Tian, SHEN Ya-nan
doaj   +1 more source

An efficient error resilience scheme based on wyner-ziv coding for region-of-Interest protection of wavelet based video transmission [PDF]

open access: yes, 2008
In this paper, we propose a bandwidth efficient error resilience scheme for wavelet based video transmission over wireless channel by introducing an additional Wyner-Ziv (WZ) stream to protect region of interest (ROI) in a frame.
Zhuo, X, Loo, KK, Cosmas, J, Yip, PY
core   +6 more sources

Regularization of EIT reconstruction based on multi-scales wavelet transforms

open access: yesCurrent Directions in Biomedical Engineering, 2016
Electrical Impedance Tomography (EIT) intends to obtain the conductivity distribution of a domain from the electrical boundary conditions. This is an ill-posed inverse problem usually solved on finite element meshes.
Gong Bo   +3 more
doaj   +1 more source

On the block wavelet transform applied to the boundary element method [PDF]

open access: yes, 2004
This paper follows an earlier work by Bucher et al. [1] on the application of wavelet transforms to the boundary element method, which shows how to reuse models stored in compressed form to solve new models with the same geometry but arbitrary load cases
Bucher, HF   +3 more
core   +1 more source

Effective lattice structures for separable two-dimensional orthogonal wavelet transforms [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2022
Discrete two-dimensional orthogonal wavelet transforms find applications in many areas of analysis and processing of digital images. In a typical scenario the separability of two-dimensional wavelet transforms is assumed and all calculations follow the ...
Dariusz Puchala
doaj   +1 more source

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