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  1. Book ; Online: Cartoon-texture evolution for two-region image segmentation

    Antonelli, Laura / De Simone, Valentina / Viola, Marco

    2022  

    Abstract: Two-region image segmentation is the process of dividing an image into two regions of interest, i.e., the foreground and the background. To this aim, Chan et al. [Chan, Esedo\=glu, Nikolova, SIAM Journal on Applied Mathematics 66(5), 1632-1648, 2006] ... ...

    Abstract Two-region image segmentation is the process of dividing an image into two regions of interest, i.e., the foreground and the background. To this aim, Chan et al. [Chan, Esedo\=glu, Nikolova, SIAM Journal on Applied Mathematics 66(5), 1632-1648, 2006] designed a model well suited for smooth images. One drawback of this model is that it may produce a bad segmentation when the image contains oscillatory components. Based on a cartoon-texture decomposition of the image to be segmented, we propose a new model that is able to produce an accurate segmentation of images also containing noise or oscillatory information like texture. The novel model leads to a non-smooth constrained optimization problem which we solve by means of the ADMM method. The convergence of the numerical scheme is also proved. Several experiments on smooth, noisy, and textural images show the effectiveness of the proposed model.

    Comment: 26 pages, 2 tables, 6 figures
    Keywords Mathematics - Numerical Analysis ; Computer Science - Computer Vision and Pattern Recognition ; 90C25 ; 65K05 ; 94A08
    Subject code 004
    Publishing date 2022-03-07
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article: Split Bregman iteration for multi-period mean variance portfolio optimization.

    Corsaro, Stefania / De Simone, Valentina / Marino, Zelda

    Applied mathematics and computation

    2020  Volume 392, Page(s) 125715

    Abstract: This paper investigates the problem of defining an optimal long-term investment strategy, where the investor can exit the investment before maturity without severe loss. Our setting is a multi-period one, where the aim is to make a plan for allocating ... ...

    Abstract This paper investigates the problem of defining an optimal long-term investment strategy, where the investor can exit the investment before maturity without severe loss. Our setting is a multi-period one, where the aim is to make a plan for allocating all of wealth among the
    Keywords covid19
    Language English
    Publishing date 2020-10-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1465428-3
    ISSN 0096-3003
    ISSN 0096-3003
    DOI 10.1016/j.amc.2020.125715
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Starting-point strategies for an infeasible potential reduction method

    D'Apuzzo, Marco / De Simone, Valentina / Di Serafino, Daniela

    Optimization letters Vol. 4, No. 1 , p. 131-146

    2010  Volume 4, Issue 1, Page(s) 131–146

    Author's details Marco D'Apuzzo; Valentina De Simone; Daniela di Serafino
    Language English
    Size graph. Darst.
    Publisher Springer
    Publishing place Berlin ; Heidelberg
    Document type Article
    ZDB-ID 2274663-8
    ISSN 1862-4472
    Database ECONomics Information System

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