Wavelets-Based MethodsYuChu TianTonghua ZhangHongmei YaoMoses O Tadé
Therefore, time–frequency methods are best fitted for non-stationary signals, since they preserve both time and frequency information. We propose a new algorithmic procedure that uses wavelet transform and ridge extraction for signals that contain one or more oscillatory frequencies and whose ...
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 is switched on. This problem may delay ... AAA Etumi,FJ Anayi - 《Electrical Engineering》 被...
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 ...
Computational methods for quantifying in vivo muscle fascicle curvature from ultrasound images Muscle fascicles curve during contraction, and this has been seen using B-mode ultrasound. Curvature can vary along a fascicle, and amongst the fascicles w... Ana,L I.,Namburete,... - 《Journal of ...
Wavelet-based two-level methods for image restoration 来自 Semantic Scholar 喜欢 0 阅读量: 84 作者:LJ Deng,TZ Huang,XL Zhao 摘要: Wavelet-based multilevel approach is a promising method for image restoration problems. In this paper, a method for image restoration based on combining the symm...
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...
Wavelet-based multiscale analysis approaches have revolutionized the tasks of signal processing, such as image and data compression. However, the scope of wavelet-based methods in the fields of statistical applications, such as process monitoring, density estimation, and defect identification, are still...
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 ...
The performance of the proposed method is studied using typical noise-free images corrupted with simulated noise and compared with that of the other state-of-the-art methods. It is shown that the proposed method gives higher values of the peak signal-to-noise ratio compared with most of the ...