An efficient algorithm of ECG signal denoising using the adaptive dual threshold filter and the discrete wavelet transform

2016 ◽  
Vol 36 (3) ◽  
pp. 499-508 ◽  
Author(s):  
Wissam Jenkal ◽  
Rachid Latif ◽  
Ahmed Toumanari ◽  
Azzedine Dliou ◽  
Oussama El B’charri ◽  
...  
Keyword(s):  
Wavelet Transform ◽  
Discrete Wavelet Transform ◽  
Efficient Algorithm ◽  
Signal Denoising ◽  
Discrete Wavelet ◽  
Ecg Signal ◽  
Threshold Filter

scholarly journals ECG signal denoising using discrete wavelet transform: A comparative analysis of threshold values and functions

MASKANA ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 105-114
Author(s):  
Marco Gualsaquí ◽  
Iván Vizcaíno ◽  
Víctor Proaño ◽  
Marco Flores
Keyword(s):  
Wavelet Transform ◽  
Comparative Analysis ◽  
Discrete Wavelet Transform ◽  
Signal Denoising ◽  
Discrete Wavelet ◽  
Ecg Signal ◽  
Threshold Values

False ventricular tachycardia alarm suppression in the ICU based on the discrete wavelet transform in the ECG signal

2014 ◽  
Vol 47 (6) ◽  
pp. 775-780 ◽  
Author(s):  
Rebeca Salas-Boni ◽  
Yong Bai ◽  
Patricia Rae Eileen Harris ◽  
Barbara J. Drew ◽  
Xiao Hu
Keyword(s):  
Ventricular Tachycardia ◽  
Wavelet Transform ◽  
Discrete Wavelet Transform ◽  
Discrete Wavelet ◽  
Ecg Signal

DISCRETE WAVELET TRANSFORM APPLIED ON PERSONAL IDENTITY VERIFICATION WITH ECG SIGNAL

2009 ◽  
Vol 07 (03) ◽  
pp. 341-355 ◽  
Author(s):  
CHUANG-CHIEN CHIU ◽  
CHOU-MIN CHUANG ◽  
CHIH-YU HSU
Keyword(s):  
Wavelet Transform ◽  
Discrete Wavelet Transform ◽  
Personal Identity ◽  
Rejection Rate ◽  
Normal Subjects ◽  
Discrete Wavelet ◽  
Ecg Signal ◽  
Identity Verification ◽  
Ecg Signals ◽  
Electrocardiogram Ecg

The main purpose of this study is to present a novel personal authentication approach with the electrocardiogram (ECG) signal. The electrocardiogram is a recording of the electrical activity of the heart and the recorded signals can be used for individual verification because ECG signals of one person are never the same as those of others. The discrete wavelet transform was applied for extracting features that are the wavelet coefficients derived from digitized signals sampled from one-lead ECG signal. By the proposed approach applied on 35 normal subjects and 10 arrhythmia patients, the verification rate was 100% for normal subjects and 81% for arrhythmia patients. Furthermore, the performance of the ECG verification system was evaluated by the false acceptance rate (FAR) and false rejection rate (FRR). The FAR was 0.83% and FRR was 0.86% for a database containing only 35 normal subjects. When 10 arrhythmia patients were added into the database, FAR was 12.50% and FRR was 5.11%. The experimental results demonstrated that the proposed approach worked well for normal subjects. For this reason, it can be concluded that ECG used as a biometric measure for personal identity verification is feasible.

AN EFFICIENT MULTI-RESOLUTION TEXTURE SYNTHESIZING METHOD BASED ON WAVELET TRANSFORM

2009 ◽  
Vol 18 (08) ◽  
pp. 1505-1516
Author(s):  
XIN ZHENG ◽  
XIAODONG WANG ◽  
HAIFENG CUI ◽  
TONG RUAN
Keyword(s):  
Wavelet Transform ◽  
Discrete Wavelet Transform ◽  
Real Time ◽  
Efficient Algorithm ◽  
Texture Synthesis ◽  
Discrete Wavelet ◽  
High Quality ◽  
The Real

The real-time rendering of high-quality, non-uniform scenes based on viewpoint has always been one of the most difficult problems in the CG area. In this paper, we propose one efficient algorithm to solve this problem with the help of merging texture synthesis and discrete wavelet transform (DWT) techniques. Using a single normal-sized image input, we can efficiently obtain texture sizes with different resolutions and update these in real-time rendering with the help of DWT. The results of our experiments prove that our algorithm can smoothly and efficiently render the non-uniform scenes based on viewpoint.

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