Improved Denoising Method for Ultrasonic Echo with Mother Wavelet Optimization and Best-Basis Selection
نویسندگان
چکیده
منابع مشابه
Adaptive Wavelet Threshold Denoising Method for Machinery Sound Based on Improved Fruit Fly Optimization Algorithm
As the sound signal of a machine contains abundant information and is easy to measure, acoustic-based monitoring or diagnosis systems exhibit obvious superiority, especially in some extreme conditions. However, the sound directly collected from industrial field is always polluted. In order to eliminate noise components from machinery sound, a wavelet threshold denoising method optimized by an i...
متن کاملA Best Wavelet Packet Basis for Joint Image Deblurring-denoising and Compression
We propose a unique mathematical framework to deblur, denoise and compress natural images. Images are decomposed in a wavelet packet basis adapted both to the deblurring filter and to the denoising process. Effective denoising is performed by thresholding small wavelet packet coefficients while deblurring is obtained by multiplying the coefficients with a deconvolution kernel. This representati...
متن کاملAn Denoising Method based on Improved Wavelet Threshold Function
The ECG signal is an important parameter for the diagnosis of heart disease. In the process of collection and transportation, ECG signals easily mixed with human body noise or the noise generated by the instrument. Therefore, the noise greatly affects the accuracy of the measurement. Wavelet threshold denoising method is widely used in denoising of ECG signal. Based on soft threshold and hard t...
متن کاملAn Improved Image Denoising Method Based on Wavelet Thresholding
VisuShrink, ModineighShrink and NeighShrink are efficient image denoising algorithms based on the discrete wavelet transform (DWT). These methods have disadvantage of using a suboptimal universal threshold and identical neighbouring window size in all wavelet subbands. In this paper, an improved method is proposed, that determines a threshold as well as neighbouring window size for every subban...
متن کاملWavelet Packet Best Basis Selection on Moderate Parallel MIMD Architectures
Wavelet packet best basis selection has become a popular method in image compression. This paper introduces a subband based parallelization which overcomes most of the diiculties of a straightforward parallel version of the sequential algorithm. Beside the higher eeciency the algorithm is easier to implement than its classical version.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Electrical and Computer Engineering (IJECE)
سال: 2016
ISSN: 2088-8708,2088-8708
DOI: 10.11591/ijece.v6i6.pp2742-2754