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the wavelet transform     
相关语句
  小波变换
     Some eigenvalues were extracted from the wavelet transform results of the power quality signals and they are related to the signals time domain, frequency band domain and amplitude information.
     对各种电能质量信号进行时域、频域和幅值分析,并从小波变换结果中提取与信号时域、频域和幅值量相关的几个特征量来表征不同电能质量信号。
短句来源
     The method is based on the fact that the coefficient of the wavelet transform signifies the resemblance between the wavelet and the signal, at the same time, the regularity of the signal is relative to the wavelet coefficient.
     这一方法是基于小波变换后的小波系数表示小波函数和信号之间的相似程度,同时信号的规则性系数又和小波变换后的小波系数模值间存在着一定关系。
短句来源
     A transform matrix B[n×n] for decomposing the sampled signal F[n] into Harr Wavelets series coefficients C[n] is presented,where n is the exponent of 2.As the inverse transform matrix B -1 =B T,the wavelet transform matrix method is then quite convenient for decomposing C=B·F and reconstructing F=B T·C.
     提出小波变换矩阵B [n×n],它可将数字采样数列F[n]分解为Haar小波级数的系数C[n],其中n是 2的整数次幂 ,小波变换逆矩阵B- 1=BT,所以小波变换矩阵的方法能十分方便地进行小波分解C =B·F和小波重构F =BT·C。
短句来源
     EXTRACTION OF P3 WAVE FROM ERP BY USING THE WAVELET TRANSFORM
     应用小波变换提取ERP的P3波
短句来源
     Application of the Wavelet Transform to the Failure Diagnosis of Tilting Trains
     小波变换在摆式列车倾摆系统故障诊断中的应用
短句来源
更多       
  小波变换的
     Realization of H.261 Video Coding Based on the Wavelet Transform
     基于小波变换的H.261的视频图像编解码器的实现
短句来源
     The De-noising of the 1/f-Type Fractal Signal Based on the Wavelet Transform
     1/f类分形信号基于小波变换的消噪
短句来源
     Identification of MPSK modulation types using the wavelet transform
     使用小波变换的MPSK信号调制类型识别
短句来源
     Based on the analyses of the directional protection scheme and adequate consideration of the characteristics of HVDC line,the paper proposes the setting value protection scheme of polarity comparison using the wavelet transform.
     在极性比较式保护方案分析的基础上,充分考虑到直流线路自身的特点,提出利用直流输电工程中现有的保护通道,来构成基于小波变换的电流行波极性比较式方向保护的方案,用以解决直流线路保护的问题。
短句来源
     The Localization Diagnosis of Lumbar Disc Herniation by the Wavelet Transform Image Enhancement Science to Give CT Contrast Study and Research
     小波变换的图像增强技术与CT扫描在腰椎间盘突出症定位诊断中的对比研究
短句来源
更多       
  利用小波变换
     Using the wavelet transform, we get the other decomposition of orthogonal direct sum of Li (Un+1, dμl(z, t, ρ) ).
     利用小波变换,我们得到了L2(Un+1,dμl(z,t,ρ))的另一个正交直和分解.
短句来源
     First, the wavelet transform is used to perform a multiscale decomposition of each image. Then, the wavelet coefficients of fused image are constructed using multiple operators according to different fusion rules.
     该方法利用小波变换对每一图像进行多尺度分解 ,按照不同的融合规则 ,采用多种融合算子去构造融合图像对应的各小波系数 ,再根据融合图像的各小波系数重构融合图像 .
短句来源
     Utilizing the ability of time-frequency analysis of the wavelet transform in signal processing and approximation of the neural networks towards any nonlinear function,a method of intrusion detection based on wavelet neural network is proposed.
     利用小波变换在信号处理方面的时频分析能力和神经网络对任意非线性函数的逼近能力,提出了一种基于小波神经网络的入侵检测方法.
短句来源
     The image fusion based on wavelet transform is a novel pixel-level image fusion scheme on multi-scale decomposition. The medical image CT and MRI were decomposed by means of the wavelet transform. Then the wavelet coefficients of the image fusion were formed with the fusion scheme.
     基于小波变换的图像融合是一种新的多尺度分解像素级融合方法,利用小波变换分别对CT,MRI医学图像进行分解处理,按照融合规则构造融合图像对应的各小波系数,再根据融合图像的各小波系数重构融合图像,重构后的融合图像完好地显示源图像各自的信息.
短句来源
     A new noisy speech segmentation algorithm based on the wavelet transform is proposed to improve the adaptability of speech segmentation to environments.
     为了提高语音分割对环境的适应性 ,提出了一种利用小波变换分割含噪语音信号中静音与语音的新算法 .
短句来源
更多       
  而小波变换
     The wavelet transform is a new branch of mathematics.
     而小波变换是近几年发展起来的一个新的数学分支。
短句来源
     The wavelet transform can keep the detail of the image well, but the effect of reducing the speckle is not good.
     而小波变换虽然可以较好地保持图像的细节信息,但是平滑效果并不理想.
短句来源
     The results show that the self-adaptive filter can be used to detect line spectrum , the wavelet transform and the Fourier transform can be used to detect the ship noise in modulating the anisotropic noise field.
     结果表明:自适应滤波对于各向异性噪声场中的线谱检测有良好的效果; 而小波变换和短时傅里叶变换对各向异性噪声场中的舰船噪声调制信号检测有良好的效果。
短句来源
     For the unstable Gaussian noise of the CCD image, the conventional method of Fourier transform can not eliminate it,but the wavelet transform is the powerful tools of noise elimination,since the wavelet transform in both the time domain and frequency domain has the excellent localization features, and the arbitrary details of analyzed objects can be focused with gradually detailed time domain or frequency domain step at high frequency.
     对于 CCD图像的非稳定高斯噪声 ,传统的 Fourier变换法无法消除噪声 ,而小波变换在时域和频域同时具有优良的局部化特征 ,而且对高频采用逐渐精细的时域或空城步长可以聚焦到分析对象的任意细节 ,从而克服了传统Fourier变换固定步长等缺点 ,因此 ,小波变换法可消除这种噪声。
短句来源
     It is not resultful to remove fractal noises using traditional method. The wavelet transform is a kind of multi-resolution method on finite time and frequency and it can separate and remove fractal noises in effect.
     使用传统方法去除分形噪声效果比较差,而小波变换是一种具有一定时间和频率分辨率的方法,它能够较好的滤除分形噪声。
短句来源

 

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  the wavelet transform
The wavelet transform is defined, and the orthogonal direct sum decomposition of function space L2(P,dμ1)) is obtained.
      
Based on the wavelet transform and the theory of modal acoustic emission, a new method is proposed to improve the accuracy of acoustic emission source location.
      
The wavelet transform is used to resolve the problem.
      
This paper briefly introduced the original Resonant Recognition Model (RRM), and then modified it by using the wavelet transform to acquire the Modified Resonant Recognition Model (MRRM).
      
The wavelet transform operator has recently been introduced into the domain fields both as a filter and as a powerful source analysis tool.
      
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The basic concepts and the recent developments in ther modynamic formalism and phase transition for multifractals,and the wavelet transform,are introduced in this paper.

扼要介绍了分形理论中逐渐兴起的多重分形在热力学类比、相变和子波变换等方面的研究情况。

The wavelet transform (WT) is used to analyze the fractional Brownian motion (FBM) and it is proved that the wavelet transform of FBM is a stable process. Two methods for estimating parameter H of FBM with the wavelet transform are proposed. These methods can be realized by a fast wavelet transform (FWT) algorithm.

本文将子波变换应用于分数布朗运动的分析,证明了分数布朗运动的子波变换是一个平稳过程的结论,提出了利用子波变换估计分数布朗运动的H参数的两种方法,这些方法与分析子波无关,可利用快速子波变换来实现.

An approach to feature extraction and recognition of the characteristic signal is studied. The wavelet transform and its basic properties are discussed. An approach to feature extraction based on wavelet modulus maxima is suggested and a global distance function is presented. An application to fuel pressure waveform in a diesel engine is given as an example.

从设备诊断领域中特征信号模式识别的应用角度,探讨了基于小波变换的特征提取与识别方法.首先讨论了小波变换及其基本性质,进而探讨了基于小波变换模量极大点的特征抽取及基于模量极大点的幅值沿尺度s演变的特征提炼方法,并构造了全局的相似性度量,最后给出了分析实例.

 
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