Multilevel approximate robust principal component analysis
File(s)
Author(s)
Hovhannisyan, Vahan
Panagakis, Yannis
Zafeiriou, Stefanos
Parpas, Panos
Type
Conference Paper
Abstract
Robust principal component analysis (RPCA) is currently the method of choice for recovering a low-rank matrix from sparse corruptions that are of unknown value and support by decomposing the observation matrix into low-rank and sparse matrices. RPCA has many applications including background subtraction, learning of robust subspaces from visual data, etc. Nevertheless, the application of SVD in each iteration of optimisation methods renders the application of RPCA challenging in cases when data is large. In this paper, we propose the first, to the best of our knowledge, multilevel approach for solving convex and non-convex RPCA models. The basic idea is to construct lower dimensional models and perform SVD on them instead of the original high dimensional problem. We show that the proposed approach gives a good approximate solution to the original problem for both convex and non-convex formulations, while being many times faster than original RPCA methods in several real world datasets.
Date Issued
2018-01-23
Date Acceptance
2017-10-22
Citation
2017 IEEE International Conference on Computer Vision Workshops (ICCVW), 2018, pp.536-544
ISSN
2473-9936
Publisher
IEEE
Start Page
536
End Page
544
Journal / Book Title
2017 IEEE International Conference on Computer Vision Workshops (ICCVW)
Copyright Statement
© 2017 The Author(s). ICCV 2017 papers are the Open Access versions, provided by the Computer Vision Foundation. Except for the watermark, they are identical to the accepted versions; the final published version of the proceedings is available on IEEE Xplore.
Sponsor
Engineering & Physical Science Research Council (E
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000425239600063&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
EP/M028240/1
Source
16th IEEE International Conference on Computer Vision (ICCV)
Subjects
Science & Technology
Technology
Computer Science, Artificial Intelligence
Engineering, Electrical & Electronic
Computer Science
Engineering
THRESHOLDING ALGORITHM
MATRIX
Publication Status
Published
Start Date
2017-10-22
Finish Date
2017-10-29
Coverage Spatial
Venice, ITALY