Comparison of SVD methods to extract the foetal electrocardiogram from cutaneous electrode signals
| Autor: | G Vantrappen, B. De Moor, Joos Vandewalle, J Janssens, Dirk Callaerts, Willy Sansen |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Adaptive algorithm
Computer science business.industry Speech recognition Biomedical Engineering Pattern recognition Foetal heart Human physiology Signal Computer Science Applications Electrocardiography Fetus Electrode Singular value decomposition Humans Artificial intelligence business Electrodes Mathematics Foetal electrocardiogram Skin |
| Zdroj: | Medical and Biological Engineering and Computing. 28:217-224 |
| ISSN: | 1741-0444 0140-0118 |
| DOI: | 10.1007/bf02442670 |
| Popis: | The paper presents and compares three methods making use of the singular value decomposition (SVD) of a matrix to extract the foetal electrocardiogram (FECG) from cutaneously recorded electrode signals. The first method constructs a set of orthogonal foetal signals (the so-called principal foetal signals) from the recordings, but needs electrode positions far from the foetal heart, in addition to the abdominal electrodes that pick up a mixture of maternal and foetal electrocardiogram. An online adaptive algorithm has been developed such that a real-time implementation becomes feasible. The second method is a new online approach to a technique presented by van Oosterom. Although this method has some important drawbacks and is suboptimal as far as foetal signal-to-noise ratio is concerned, it is still very useful when only a foetal trigger is required, as the signal obtained is not a complete FECG. Finally, a third method is proposed, based on the generalised SVD and interpreted with the new concept of oriented signal-to-signal ratio. An online version is also presented for this method and some results are shown. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink