Title :
BSPM spatial data reduction by normalized Karhunen-Loeve expansion
Author :
Sun, Gang ; Thomas, Cecil W. ; Liebman, Jerome ; Stilli, Donatella ; Macchi, Emilio
Author_Institution :
Dept. of Biomed. Eng., Case Western Univ., Cleveland, OH, USA
Abstract :
The authors introduce a normalized Karhunen-Loeve (K-L) expansion in the spatial data reduction of BSPM (body surface potential map) data. In the normalized K-L expansion, the covariance matrix is calculated by the normalized vectors (maps), and the purpose of the normalization is to eliminate the energy inhomogeneity. The results show the superior performance of the normalized K-L expansion over the original K-L expansion in both RMS errors and correlation coefficients.<>
Keywords :
bioelectric potentials; computerised signal processing; data reduction; matrix algebra; medical computing; BSPM spatial data reduction; K-L expansion; Karhunen-Loeve expansion; RMS errors; bioelectric potentials; body surface potential map; correlation coefficients; covariance matrix; signal processing;
Conference_Titel :
Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-0785-2
DOI :
10.1109/IEMBS.1988.94437
