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dc.contributor |
Universitat de Vic - Universitat Central de Catalunya. Grup de Recerca en Tractament de Dades i senyals |
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dc.contributor.author |
Al-Baddai, Saad |
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dc.contributor.author |
Al-Subari, Karema |
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dc.contributor.author |
Tomé, Ana Maria |
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dc.contributor.author |
Solé-Casals, Jordi |
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dc.contributor.author |
Lang, Elmar W. |
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dc.date.accessioned |
2017-05-15T12:12:45Z |
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dc.date.available |
2017-05-15T12:12:45Z |
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dc.date.created |
2016 |
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dc.date.issued |
2016 |
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dc.identifier.citation |
Al-Baddai, S., Al-Subari, K., Tomé, A. M., Solé-Casals, J., & Lang, E. W. (2016). A green's function-based bi-dimensional empirical mode decomposition. Information Sciences, 348, 305-321. |
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dc.identifier.issn |
0020-0255 |
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dc.identifier.uri |
http://hdl.handle.net/10854/4994 |
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dc.description.abstract |
Bidimensional Empirical Mode Decomposition (BEMD) interprets an image as a superposition of Bidimensional Intrinsic Mode Functions (BIMFs). They are extracted by a process called sifting, which encompasses two-dimensional surface interpolations connecting a set of lo- cal maxima or minima to form corresponding envelope surfaces. Existing surface inter- polation schemes are computationally very demanding and often induce artifacts in the extracted modes. This paper suggests a novel method of envelope surface interpolation based on Green’s functions. Including surface tension greatly improves the stability of the new method which we call Green’s function in tension -based BEMD (GiT-BEMD). Simula- tion results, using toy images with various textures, facial images and functional neuroim- ages, demonstrate the superior performance of the new method when compared to its canonical BEMD counterpart. GiT-BEMD strongly speeds up computations and achieves a higher quality of the extracted BIMFs. Furthermore, GiT-BEMD can be extended simply to an ensemble-based variant (GiT-BEEMD), if needed. In summary, the study suggests the new variant GiT-BEMD as a highly competitive, fast and stable alternative to existing BEMD techniques for image analysis. |
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dc.format |
application/pdf |
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dc.format.extent |
17 p. |
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dc.language.iso |
eng |
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dc.publisher |
Elsevier |
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dc.rights |
Tots els drets reservats |
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dc.rights |
(c) Elsevier |
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dc.subject.other |
Tractament del senyal |
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dc.title |
A green’s function-based Bi-dimensional empirical mode decomposition |
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dc.type |
info:eu-repo/semantics/article |
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dc.identifier.doi |
https://doi.org/10.1016/j.ins.2016.01.089 |
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dc.rights.accessRights |
info:eu-repo/semantics/closedAccess |
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dc.type.version |
info:eu-repo/publishedVersion |
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dc.indexacio |
Indexat a WOS/JCR |
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dc.indexacio |
Indexat a SCOPUS |
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