Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Raul Serapioni"'
Publikováno v:
IEEE Transactions on Image Processing. 30:3543-3554
The image contrast is a feature capturing the variation of the image signal across the space. Such a feature is very useful to describe the local image structure at different scales and thus it is relevant to many computer vision applications, like i
Publikováno v:
IEEE transactions on image processing : a publication of the IEEE Signal Processing Society. 26(6)
Retinex is an early and famous theory attempting to estimate the human color sensation derived from an observed scene. When applied to a digital image, the original implementation of retinex estimates the color sensation by modifying the pixels chann
Autor:
Raul Serapioni
Publikováno v:
Harmonic Analysis, Partial Differential Equations and Applications ISBN: 9783319527413
An alternative characterizations of intrinsic Lipschitz functions within Carnot groups through the boundedness of appropriately defined difference quotients is provided. It is also shown how intrinsic difference quotients along horizontal directions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d599f8893299df838efdf4bcb4f15495
https://doi.org/10.1007/978-3-319-52742-0_10
https://doi.org/10.1007/978-3-319-52742-0_10
Publikováno v:
Geometric Control Theory and Sub-Riemannian Geometry ISBN: 9783319021317
In this Note we present the basic features of the theory of Lipschitz maps within Carnot groups as it is developed in \cite{FMS}, and we prove that intrinsic Lipschitz domains in Carnot groups are uniform domains.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02c0aecd8367be418366c9e1276adf76
https://doi.org/10.1007/978-3-319-02132-4_10
https://doi.org/10.1007/978-3-319-02132-4_10
Autor:
Bruno Franchi, Raul Serapioni
A Carnot group is a connected, simply connected, nilpotent Lie group with stratified Lie algebra. We study the notions of intrinsic graphs and of intrinsic Lipschitz graphs within Carnot groups. Intrinsic Lipschitz graphs are the natural local analog
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a330f5c40eda8d57b27e1b81a70d6c55
https://link.springer.com/article/10.1007/s12220-015-9615-5
https://link.springer.com/article/10.1007/s12220-015-9615-5
Publikováno v:
Scopus-Elsevier
We define rectifiable sets in the Heisenberg groups as countable unions of Lipschitz images of subsets of a Euclidean space, in the case of low-dimensional sets, or as countable unions of subsets of intrinsic C 1 surfaces, in the case of low-codimens
Autor:
Gabriella Arena, Raul Serapioni
Publikováno v:
Calculus of Variations and Partial Differential Equations. 35:517-536
We characterize intrinsic regular submanifolds in the Heisenberg group as intrinsic differentiable graphs.
Publikováno v:
Advances in Mathematics. 211:152-203
We describe intrinsically regular submanifolds in Heisenberg groups Hn. Low dimensional and low codimensional submanifolds turn out to be of a very different nature. The first ones are Legendrian surfaces, while low codimensional ones are more genera
We present a novel region-based active contour model that segments one or more image regions that are visually similar to an object of interest, said prior. The region evolution equation of our model is defined by a simple heuristic rule and it is no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5e7220f286953531ee32c0d0da34a6d
http://hdl.handle.net/11572/122269
http://hdl.handle.net/11572/122269
Motivated by an example in Magnani (in press), we study, inside a separable metric space ( X , d ) , the relations between centered and non centered m -dimensional densities of a Radon measure μ in X and their relations with spherical and centered s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c047bac1518209dfdb521a6d155de033
http://hdl.handle.net/11572/119431
http://hdl.handle.net/11572/119431