£39.99

Un libro sobre compresión de señales de electrocardiograma mediante PCA y SVD

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£43.00 £39.69 £40.41 £41.13 £41.86 £42.58 £43.30 14 April 2026 04 May 2026 24 May 2026 13 June 2026 03 July 2026

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Description

El ECG es un método electrónico de registro de los latidos del corazón del paciente. La curva PQRST determina las características de los latidos del corazón. Al conectar derivaciones adicionales durante el registro de las señales de ECG, se requieren frecuencias de muestreo más altas y una resolución de amplitud más fina; en el caso de las señales no cardíacas, como la presión arterial y la respiración, se necesita una gran cantidad de espacio de almacenamiento. La transmisión rápida de señales de ECG a través de redes inalámbricas, desde ambulancias a hospitales, redes telefónicas y redes hospitalarias no es posible sin comprimirlas. Para la compresión de datos de ECG se han aplicado los métodos de análisis de componentes principales (PCA) y de descomposición de valores singulares (SVD). Se comprime una base de datos de arritmias MIT-BIH de dos derivaciones y una base de datos Physikalisch-Technische Bundesanstalt (PTB) de quince derivaciones, y la calidad de la señal reconstruida se evalúa en función de la diferencia cuadrática media porcentual (PRD) y la relación de compresión (CR). La señal ECG se reconstruye utilizando un número diferente de vectores propios. CR de 4,26 se logra con PRD de 8,1944 con este método para la señal de ECG de 2 derivaciones.

Product Specifications

Format
paperback
Domain
Amazon UK
Release Date
31 January 2024
Listed Since
02 February 2024

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