wavelet transformation

First, the threshold filter and the signal correlation enhancement will be carried out to the high frequency data of wavelet transformation, it can not only denoise commendably, but also strengthen the point efficiently.

该算法首先将小波变换后的高频数据分量进行阈值滤波和信号增强处理，在很好地抑制噪声的同时，还能有效地增强突变点信息。

Wavelet transformation is a time-scale and time-frequency signal analysis.

小波分析是一种信号的时间尺度分析和时间频率分析方法，在实际工程中得到了广泛的应用。

The wavelet transformation by Gabor wavelet is applied to the time-frequency analysis of disperse plate waves.

基于小波变换和模态声发射理论,通过模态声发射试验的方法确定了管道中导波传播的频散特性.

The wavelet transformation ( WT ) is a very powerful tool for the analysis of non-stationary signals.

小波分析是分析 非 稳定信号的一种非常有效的方法.

This article finally introduced the wavelet transformation digital watermark inserts with the examination simulation simulation.

本文最后介绍了小波变换的数字水印嵌入和检测模拟仿真.

Time frequency analysis method is used to analyze the time domain and frequency domain of seismic waves at the same time according to the principle of wavelet transformation.

时频分析方法是利用小波变换原理，从地震波的时间域和频率域同时对其作出分析。

Reversible Data Hiding for Images Using Integer Wavelet Transformation and Companding Technique

基于小波压缩扩展技术的无损图象数据隐藏

Considering robustness of watermark, we choice frequency Coefficients of DWT ( Discrete Wavelet Transformation ) to embed white watermark.

出于鲁棒性考虑, 我们对图像进行小波变换,选择在小波域的低频系数中嵌入二值水印.

The wavelet analysis theory and Fourier transform, the window Fourier transform time are compared to the space-time and frequency local transformation, and thus more effective in extracting data from the signal information.

小波分析理论与傅立叶变换、窗口傅立叶变换相比是时空和频率的局域变换，因而更能有效地从信号数据中提取信息。

Secondly , wavelet transformation method is adopted to withdraw vehicle features and then to assort vehicles automatically.

采用小波变换方法提取车辆特征数据可以实现对车辆的自动分类.