Furthermore quantitative study of result evaluation has been done based on Signal to Noise Ratio (SNR). The results show that, on contrast with traditional methods wavelet method can achieve optimal denoising of ECG signal. 展开 关键词: Thresholding ECG Wavelet analysis powerline interference ...
The Extraction of Phase Axis Effective Signals from Noise Signals Based on the FASTICA Algorithm As most noise attenuation methods are based on the horizontal correlation of seismic records profile, it usually enhances the horizontal phase axis of seis... H Ma,H Shao,L Yue,... - 《Lecture ...
Current signal processing-based methods to discriminate internal faults from magnetizing inrush current Two new methods, current change ratio (CCR) and percentage area difference (PAD) were proposed to solve a problem of how to distinguish between internal faults and inrush condition when transformer ...
Computational experiments show that symmlets-based two-level method yields smaller relative errors and more stable results.关键词: Practical/ image restoration wavelet transforms/ wavelet-based two-level methods wavelet-based multilevel approach image restoration problems two-level technique symmlets-based ...
class classification problem, we have investigated several different feature extraction methods such as principal component analysis, wavelets, and Gabor filters... Z Sun,G Bebis,R Miller - 《IEEE Transactions on Image Processing》 被引量: 409发表: 2006年 Signal Processing Techniques in Genomic Engi...
Other wavelet-based methods have been used to analyse the relationships between multivariate signals1,35,36,37. Nevertheless, standard significance tests assume stationarity of observations, which strongly affects the significance of the detected coherent patterns. Our results also provide evidence of the...
We also show that this approach leads to O(log^d n) query and update methods twice as fast as Haar-based methods. Moreover, since these new methods are pyramidal, they provide incrementally improving estimates. This paper won the Best Paper Award. 展开 ...
ON WAVELET-BASED METHODS FOR HURST INDEX ESTIMATION OF SELF-SIMILAR TRAFFIC自相似数据流的Hurst指数小波求解法分析 Existing wavelet methods for the estimation of the Hurst parameter of self-similar traffic are systematically analyzed and examined. The effects of wavelet... Li Yongli,Liu Guizhong,Wang...
Damage detection of a rectangular plate by spatial wavelet based approach This paper presents a technique for structure damage detection based on spatial wavelet analysis. Many damage detection methods require modal properties be... CHANG,C - 《Applied Acoustics》 被引量: 136发表: 2004年 Wavelet-...
2.1. Intermittency Wavelet-Based Quantifiers Wavelet-based techniques constitute a powerful tool for analyzing possible intermittency in a signal, and have been applied in many studies, in particular in the context of environmental sciences. An interesting related insight was given, for example, in [...