Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Imen Bhouri"'
Publikováno v:
Advances in Predictive, Preventive and Personalised Medicine ISBN: 9783030117993
The aim of this study is the microcalcification segmentation in digital mammograms. We propose two different methods which are based on the combination of the multifractal analysis with, respectively, the fractal analysis and then with the lacunarity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1f94a47289950c31c4e7fcafee5dfc8
https://doi.org/10.1007/978-3-030-11800-6_4
https://doi.org/10.1007/978-3-030-11800-6_4
Autor:
Mohamed Hedi Bedoui, Hanen Akkari, Eric Lespessailles, Asma Ben Abdallah, Imen Bhouri, Ines Slim, Rachid Jennane
Publikováno v:
2016 13th International Conference on Computer Graphics, Imaging and Visualization (CGiV).
Osteoporosis is a disease characterized by low bone mass and deterioration of micro-architectural bone tissue, which provokes an increased risk of fracture. This work treats the texture characterization of trabecular bone radiographs. The goal is to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed0f82b12499426dbebc74bd8ddf412e
https://doi.org/10.1109/cgiv.2016.45
https://doi.org/10.1109/cgiv.2016.45
Publikováno v:
Pattern Recognition. 44:1690-1697
For texture analysis, several features such as co-occurrence matrices, Gabor filters and the wavelet transform are used. Recently, fractal geometry appeared to be an effective feature to analyze texture. But it is often restricted to 2D images, while
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::012d1ba6cadc3d68205cb8c3da3adf69
https://doi.org/10.1016/j.patcog.2011.02.017
https://doi.org/10.1016/j.patcog.2011.02.017
Publikováno v:
Rendiconti del Circolo Matematico di Palermo. 60:469-476
In this work we study the some general fractal sums of pulses defined in ℝ by: $$F(t) =\sum^{+\infty}_{n=1}a_nG(\lambda_n^{-1}(t-X_n))$$ where (an), (λn) two positive scalar sequences such that ∑an is divergent, and (λn) is non-increasing to 0,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::606c3e55a23e08e6c2536de92755da34
https://doi.org/10.1007/s12215-011-0061-3
https://doi.org/10.1007/s12215-011-0061-3
Autor:
Imen Bhouri, Julien Barral
Publikováno v:
Ergodic Theory and Dynamical Systems. 31:673-701
Let n>m≥1 be two integers. At first we obtain general results for the multifractal analysis of the orthogonal projections on m-dimensional linear subspaces of singular measures μ on ℝn satisfying the multifractal formalism. The results hold for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29d1cc4ee53a89326d16539666b0d2ca
https://doi.org/10.1017/s0143385710000143
https://doi.org/10.1017/s0143385710000143
Publikováno v:
International Journal of Medical Imaging. 6:1
This paper presents a new approach for synthesizing breast tissue images based on a random fractal process, the fractional Brownian motion (fBm). This work deals with modeling Regions of Interest (ROIs) of mammographic images. Diverse synthetic ROIs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e672c01c87fd3e40a791de920d58a39
https://doi.org/10.11648/j.ijmi.20180601.11
https://doi.org/10.11648/j.ijmi.20180601.11
Autor:
Imen Bhouri
Publikováno v:
Chaos, Solitons & Fractals. 42:1451-1462
In this paper we intend to generalize the L q -spectrum relatively to two measures and to study its behavior under orthogonal projections. A uniform result is obtained in the case of “Frostman like measures”.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f742f9a587f96746b1733080e74f3b0f
https://doi.org/10.1016/j.chaos.2009.03.056
https://doi.org/10.1016/j.chaos.2009.03.056
Autor:
Imen Bhouri, Houssem Tlili
Publikováno v:
Discrete & Continuous Dynamical Systems - A. 24:1129-1145
We study the multifractal formalism for Bernoulli products of invertible matrices. Using the Fourier-Laplace transform, we prove the existence of a Frostman measure and so the validity of multifractal formalism. As an application we give an estimatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::150e418367bbef97e15d0a7d79e5db02
https://doi.org/10.3934/dcds.2009.24.1129
https://doi.org/10.3934/dcds.2009.24.1129
Autor:
Imen Bhouri, Haı¨kel Skhiri
Publikováno v:
Linear Algebra and its Applications. 430:847-854
In the present paper, we characterize the approximation numbers orbits of conjugation of a bounded operator T in an Hilbert space and there relationship with the eigenvalues of T . As a consequence we obtain that for normal operators | λ n ( T ) | =
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::426d71340f52a84e9c83d8341952e64f
https://doi.org/10.1016/j.laa.2008.09.031
https://doi.org/10.1016/j.laa.2008.09.031
Publikováno v:
Mathematical Modelling of Natural Phenomena. 3:48-75
The inner knowledge of volumes from images is an ancient problem. This question be- comes complicated when it concerns quantization, as the case of any measurement and in particular the calculation of fractal dimensions. Trabecular bone tissues have,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ecf69eef7b11417c0d0a9d6caffdfd3
https://doi.org/10.1051/mmnp:2008081
https://doi.org/10.1051/mmnp:2008081