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Authors: J. F. Garamendi 1 and E. Schiavi 2

Affiliations: 1 Universitat Pompeu Fabra, Spain ; 2 Universidad Rey Juan Carlos, Spain

Keyword(s): Multi-channel Image Segmentation, Variational Methods, Mumford-Shah.

Related Ontology Subjects/Areas/Topics: Computer Vision, Visualization and Computer Graphics ; Image and Video Analysis ; Segmentation and Grouping

Abstract: We present a general model for multi-class segmentation of multi-channel digital images. It is based on the minimization of an anisotropic version of the Mumford-Shah energy functional in the class of piecewise constant functions. In the framework of geometric measure theory we use the concept of common interphases between regions (classes) and the value of the jump discontinuities of the (weak) solution between adjacent regions in order to define a minimal partition energy functional. The resulting problem is non-smooth and non-convex. Non-smoothness is dealt with highlighting the relationship of the proposed model with the well known Rudin, Osher and Fatemi model for image denoising when piecewise constant solutions (i.e partitions) are considered. Non-convexity is tackled with an optimal threshold of the ROF solution which we which generalize to multi-channel images through a probabilistic clustering. The optimal solution is then computed with a fixed point iteration. The result ing algorithm is described and results are presented showing the successful application of the method to Light Field (LF) images. (More)

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Paper citation in several formats:
Garamendi, J. and Schiavi, E. (2017). A Multiclass Anisotropic Mumford-Shah Functional for Segmentation of D-dimensional Vectorial Images. In Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2017) - Volume 4: VISAPP; ISBN 978-989-758-225-7; ISSN 2184-4321, SciTePress, pages 468-475. DOI: 10.5220/0006127804680475

@conference{visapp17,
author={J. F. Garamendi. and E. Schiavi.},
title={A Multiclass Anisotropic Mumford-Shah Functional for Segmentation of D-dimensional Vectorial Images},
booktitle={Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2017) - Volume 4: VISAPP},
year={2017},
pages={468-475},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006127804680475},
isbn={978-989-758-225-7},
issn={2184-4321},
}

TY - CONF

JO - Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2017) - Volume 4: VISAPP
TI - A Multiclass Anisotropic Mumford-Shah Functional for Segmentation of D-dimensional Vectorial Images
SN - 978-989-758-225-7
IS - 2184-4321
AU - Garamendi, J.
AU - Schiavi, E.
PY - 2017
SP - 468
EP - 475
DO - 10.5220/0006127804680475
PB - SciTePress

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