• 通过预处理滤除工周期分量消除小波变换信号极大值从而避免了故障误判

    As wavelet module maxima occur at peaks of signal, the pretreatment removes power frequency periodic components from electric signal and thus avoids misjudgments of fault.

    youdao

  • 基于小波变换各个尺度极大本文深入研究异常心电信号尤其是梗死发生时S - T段的检测

    Based on the modulus maxima at each scale of wavelet transform, this paper does a research into the detection of S-T segment of abnormal ECG, especially that of myocardial infarction.

    youdao

  • 利用变换极大值原理,提出了小波变换尺度谱检测信号至点方法,研究了其检测噪声有噪声条件下的瞬态信号的能力。

    Based on the principle of modulus maximum, a new approach using scalogram of wavelet transform for transient signal, under noise free condition or noise condition separately, is described.

    youdao

  • 论述分析、信号奇异性小波变换极大性质关系基础上,本文给出了一种基于小波变换模极大值的信号去算法

    Based on the wavelet transform and the relation between signal singularity and wavelet transform modular maximum, a noise removal technique is discussed.

    youdao

  • 通过信号噪声奇异性分析得出信号与噪声的波变换极大在各个尺度上的表现截然相反的结论。

    The singularities of signals and noises are investigated. A conclusion is drawn that the wavelet modulus maxima of signals have contrary behaviors from that of noises.

    youdao

  • 二次光滑作为小波函数,水果红外图像进行小波变换计算小波变换结果的局部极大点,从而得到了水果红外图像的轮廓。

    A quadratic lubricity wavelet as wavelet function was defined to do the two dimensional dyadic wavelet transform on fruit infrared image, and to get local modulus maxima from the results.

    youdao

  • 探讨了分形测度变换极大线拓扑情况,并提出了一种基于小波变换极大值多重分形估算方法

    Topologic bifurcation situation of maxima lines is also discussed. In the end, an estimation for multifractal spectrum is proposed in terms of wavelet module maxima lines.

    youdao

  • 探讨了分形测度变换极大线拓扑情况,并提出了一种基于小波变换极大值多重分形估算方法

    Topologic bifurcation situation of maxima lines is also discussed. In the end, an estimation for multifractal spectrum is proposed in terms of wavelet module maxima lines.

    youdao

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