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- A method is proposed for segmenting MR brain images using the best wavelet packet transform，and the eigenvectors are come into using the energy of wavelet packets’ coefficients. 摘要 提出应用最优小波包变换对磁共振颅脑图像做分解，以各子带小波包系数的能量形成纹理特征集；
- sub-band energy of wavelet packet 小波包子带能量
- Energy of wavelet packet 小波包能量
- The high time-frequency characteristic of wavelet packet analysis is utilized to decompose the vibration signal, and slag characteristic parameter is composed of signal energy in sub frequency bands. 首先，利用小波包分析的高时频分辨特性将振动信号分解到各个频带上，并以各频带信号的能量来构造用于下渣检测的特征参数。
- Firstly, the characters of wavelet transform and wavelet packet analysis were introduced. 首先，简略地介绍了小波变换与小波包分析的特点。
- Finally,the possibility of wavelet packet modulation application in Digital AM transmission system is discussed. 通过与基于离散傅里叶变换的正交频分复用调制系统进行比较 ,探讨了小波包调制应用于数字调幅传输系统的可能性
- The theory of wavelet packet transform and the method of voltage signal analysis with wavelet packet was presented. 简述了小波包变换的基本原理及利用小波包对电压信号进行分解的方法。
- WPT-BAYES(combination of wavelet packet transform and Bayes) method can improve its recognition accuracy to 98%. 采用WPT-BAYES(小波包变换-贝叶斯)方法,可以大幅度提高识别精度,其正确识别率高达98%25以上,满足使用要求。
- A method to simulate fatigue stress history based on the wavelet packet transform, a special branch of the theory of wavelet analysis was presented. 采用小波分析理论中的小波包变换 ;提出了一种基于小波分析的模拟疲劳应力的方法 .
- Application of wavelet packet analysis and BP ANN in diagnosing the hole defects in Acer mono wood using ultrasonic quantitative testing. 小波和神经网络在色木孔洞缺陷超声定量检测中的应用
- The theory of wavelet and wavelet packet is simply presented and vibration signal of farm transporter is analyzed by programming with MATLAB. 摘要介绍了小波和小波包理论的基本思想，并用MATLAB语言编制了处理程序对农用运输车振动信号进行实例分析。
- A feature extraction method of high-range-resolution radar profiles, which takes advantage of wavelet packet transform and modified SVD(singular value decomposition) was proposed. 提出了基于小波包变换和改进奇异值分解的高分辨雷达目标一维距离像特征提取方法。
- Making use of wavelet packet decompose, it can improve the capacity of discernment in neural network without losing any vibration signal in reducing dimension of signal. 运用小波包频带能量分解，可以在不丢失振动信息的情况下降低信号的维数，提高神经网络的识别能力；
- The effect of the signal processing indicated that ability of defect is enhanced,and that the method of the wavelet packet is more effective than the method of wavelet analyses in the pressure fluctuation signal processing in SCISR. 同时验证了小波包分析在撞击流反应器内压力波动信号处理中应用的有效性,而且小波包分析方法比小波方法处理信号的效果更为理想。
- The theoretic calculation shows the analysis mothed of wavelet packet not only can confirm the abrupt change point of the signal, but alse can confirm the fault degree and time in all frequency spectrum. 理论计算表明，应用小波包分析技术不仅可以确定信号的突变点，而且可以在全频范围内确定信号的突变发生的时间及程度。
- The solar cell can convert the energy of sunlight into electric energy. 太阳能电池能把阳光的能量转化为电能。
- Resemblance coefficient feature selection approach based on quantum genetic algorithm is applied to select the most discriminatory features from a large number of wavelet packet transform... 仿真实验结果显示,该方法用较少的特征能获得较高的正确识别率,具有一定的参考价值。
- The energy of motion is called kinetic energy. 运动的能量称为动能。
- In the study of brain-computer interfaces,a method based on best basis of wavelet packet decomposition was proposed.The method is used for the feature extraction of electroencephalogram. 在脑机接口研究中;针对脑电特征抽取;提出一种基于小波包最优基分解的方法.;依据距离准则;从小波包库中选择一个对分类最优的小波包基;
- On the basis of wavelet packet decomposition technique introduced firstly, the measured unstable oil-film oscillations of single-disc and single-span rotor system were investigated. 在介绍小波包分解原理的基础上,对试验测得的单盘单跨转子系统的油膜振荡非平稳信号用小波包分解方法进行了研究。
