Szczegóły publikacji
Opis bibliograficzny
Decimation and quantization of vectocardiograms in spherical coordinates domain / Piotr AUGUSTYNIAK // W: Medicon 2001 : IX [ninth] mediterranean conference on Medical and biological engineering and computing : 12–15 June 2001 Pula, Croatia, Pt. 2. — Zagreb : University of Zagreb. Faculty of Electrical Engineering and Computing (FER) ; Croatian Medical and Biological Engineering Society (CROMBES), 2001. — (IFMBE Proceedings / International Federation for Medical & Biological Engineering ; ISSN 1680-0737). — S. 364–367. — Bibliogr. s. 367, Abstr.
Autor
Dane bibliometryczne
| ID BaDAP | 36913 |
|---|---|
| Data dodania do BaDAP | 2008-01-31 |
| Rok publikacji | 2001 |
| Typ publikacji | materiały konferencyjne (aut.) |
| Otwarty dostęp |  |
| Czasopismo/seria | IFMBE Proceedings |
Abstract
The paper discusses two issues involved in reduction of the vectocardiogram's data volume. The fundamental novelty of our approach is the processing of the spherical coordinates (magnitude, latitude and longitude) instead of Cartesian (XYZ) signal representation. The quantization of the angular values at different levels and the resulting distortions of main recording segments are studied at the beginning. Next, the spectral representations of the angular values were investigated with a special attention to the energy distribution. Finally, two decimation stages were applied together with the quantization aiming at finding the compromise between the resulting data rate and the distortion coefflicients for particular signal segments. Every our outcome is supported by the numerical experiment carried out with use of a real VCG data. Further considerations for the implementation of the compression algorithm terminate the paper. Main advantage of the method is the possible use of custom-defined compression profiles. An example profile yields the compression ratio 3,2 and distortion level of 17,2% (in loops 5,8%).
