Robust Correlation Analysis with an Application to Functional MRI
2008 (English)In: Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE, IEEE conference proceedings, 2008, 453-456 p.Conference paper (Refereed)
Correlation is often used to measure the similarity between signals and is an important tool in signal and image processing. In some applications it is common that signals are corrupted by local bursts of noise. This adversely affects the performance of signal recognition algorithms. This paper presents a novel correlation estimator, which is robust to locally corrupted signals. The estimator is generalized to multivariate correlation analysis (general linear model, GLM, and canonical correlation analysis, CCA). Synthetic functional MRI data is used to demonstrate the estimator, and its robustness is shown to increase the performance of signal detection.
Place, publisher, year, edition, pages
IEEE conference proceedings, 2008. 453-456 p.
, IEEE International Conference on Acoustics, Speech and Signal Processing. Proceedings, ISSN 1520-6149
biomedical MRI, correlation methods, medical signal processing, signal detection, canonical correlation analysis, correlation estimator, general linear model, locally corrupted signals, multivariate correlation analysis, robust correlation analysis, synthetic functional MRI data
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-12660DOI: 10.1109/ICASSP.2008.4517644ISI: 000257456700114ISBN: 978-1-4244-1483-3ISBN: e-978-1-4244-1484-0OAI: oai:DiVA.org:liu-12660DiVA: diva2:16790
IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2008, 31 March-4 April 2008, Las Vegas, NV, USA
©2010 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. Joakim Rydell, Magnus Borga and Hans Knutsson, Robust Correlation Analysis with an Application to Functional MRI, 2008, IEEE International Conference on Acoustics, Speech and Signal Processing, 2008, Las Vegas, USA, 453-456. http://dx.doi.org/10.1109/ICASSP.2008.45176442007-11-072007-11-072015-10-09