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- Then an improved method, namely translation invariant de noising was proposed. 在此基础上 ,探讨了对传统的阈值方法的改进 ,即平移不变小波变换去噪法。
- The application of de noising by soft thresholding on wavelet transform to ultrasonic detection echo is discussed. 研究小波变换软阈值去噪方法在超声检测回波处理中的应用。
- This paper presented a new method based on nonlinear wavelet transform to image de noising. 提出一种新的非线性小波变换去噪方法 .
- Methods Based on statistical data of Shaanxi Province from 1999 to 2004, the grey correlation degree analysis is used. 方法基于陕西省1999-2004年的统计数据,运用灰色系统理论中的相对关联度分析方法。
- In the end,the statistics of the operational volume of wavelet de noising is made. 最后对小波去噪的运算量进行了统计 .
- In this paper,mean threshold is presented on which wavelet packet de noising is studied. 文中提出了平均阈值的概念 ;并在此基础上研究了小波包去噪的效果 .
- Range of grey correlation degree from high to low was plant height, effective pod numbers, seeds per legumen, 1000-seeds weight and effective branches. 不同海拔下各经济性状与产量关联度的变幅由大到小依次为:植株高度、有效角果数、每角粒数、千粒重和有效分枝。
- It has been proved that the wavelet packet de noising is an effective method prior to wavelet de noising. 仿真结果表明 ,基于平均阈值的小波包去噪是一种有效的去噪方法 ,其效果优于小波去噪
- It is shown that the M2 factor increases with increasing bandwidth and deceases with increasing spatial correlation degree. 研究结果表明,M2因子随脉冲光束带宽的增大而增大,随空间相关度的增大而减小。
- In analytical chemistry,wavelet transform has been mainly utilized for signal smoothing,de noising and compression. 在分析化学领域中,小波分析也逐渐应用于去噪与平滑、数据压缩等方面。
- Firstly,this paper put forward the Definition of a new correlation degree based on the fuzzy nearness and the grey correlation degree. 首先结合灰色系统和模糊数学的有关理论,提出了基于模糊贴近度和灰关联度耦合的新关联度定义。
- The correlation degree analysis showed that the varieties with thick bark and big plant should be selected in the breeding of kenaf. 关联度分析表明,在育种上,红麻应选育皮厚、植株高大的品种;
- The result indicates that the wavelet transform has practical value in the performance of de noising and real time processing. 结果表明 ;小波变换在去噪性能和实时处理方面均具有实用价值 .
- Compared with[1],the proposed algorithm can be realized without the a priori knowledge about source directions and de noising preprocessing. 与文献 [1]不同 ;算法的实现不需要方位估计的先验知识和协方差矩阵的去噪预处理 .
- Taking the GCE as the central model to calculate the relative optimal correlation degree to realize the optimal sorting of terminal distribution candidates. 然后以灰色关联分析为中心模型计算出相对最优的关联度,从而实现对候选站场布局方案的优先排序。
- After making discrete stationary wavelet transform to an infrared image, de noising is done in the high frequency sub bands with better resolution. 对红外图像进行离散平稳小波变换后 ,对分辨率较好的各高频子带直接利用所提出的去噪方法去噪 ;
- Based on the Grey System theory,the method of Correlation Degree was used to analysis the main impacting factors about yield of municipal solid waste of Hefei. 基于灰色系统理论,运用灰色关联度分析法定量分析了影响合肥城市生活垃圾产量的主要相关因素;
- To find the best scheme of wavelet de noising,various parameters that influence the performance of wavelet de noising are studied in this paper. 为了找到最佳的小波去噪方案 ;本文对各种影响小波去噪性能的参数作了比较研究 .
- A correlation degree between two regions is calculated from OD (origin to destination) tables, and is represented by the OD flows of passengers and cargo. 区域关联度计算的基础是OD表,OD对间的客货流量代表了区域间关联关系的强弱。
- Simulation tests are made to verify that the partial features of the original signal can be reserved after de noising via this method. 为了验证该方法可以在去噪的同时有效的保留原信号的特征分量 ,进行了模拟故障试验。