查询词典 wavelet

Compared with the traditional discrete wavelet transform, the dual tree complex wavelet transform has the properties of approximate shift invariance and more directionality. These properties are good for tracing, locating and preserving image features.

与常用的离散小波变换相比，该方法具有逼近的平移不变性和更多的方向选择性，有利于特征的跟踪、定位和保留。

The other aspect is devoted to the a new image denoising algorithm via doubly local Wiener filtering with windows based on Stationary wavelet transform with the Dual tree complex wavelet transform.

提出一种基于SWT和DTCWT的加窗的双重局部维纳滤波图像去噪算法。

Since wavelet function has local features both in space and frequency domains, so wavelet analysis provides a good analysis mothed for multiresolution analysis of signal and image and effectuation and reliability of mothed have been proved by the experiment.

小波理论的发展史并不很长，但是由于它具有很多良好的性质，因此它的出现对很多领域的的研究和发展有很大的促进作用。

Using the local nature of wavelet transform and Teager energy operator, a novel scheme is proposed to detect ship targets in SAR images based on TEO wavelet enhancement.

摘要根据小波变换和Teager能量算子的局部特性，该文提出一种基于SAR图像的船舰检测算法。

Finally, based on the characteristics of transient responses and the Morlet wavelet, a family of wavelet functions is introduced and used in the simulation of modal analysis.

文中分析了在众多小波基函数中Morlet小波更适合对动态结构系统进行模态分析的原因，结合Morlet小波的性质和结构系统对脉冲响应信号的特性，构造了一小波族，实现了利用Morlet小波变换对多自由度系统进行模态解耦和对时变系统进行模态参数辨识的方法。

The general process of fault signal by using wavelet analysis and the Mallat arithmetic about wavelet were introduced.

介绍了小波变换的一维Mallat塔式算法以及小波变换在信号处理中的一般过程。

A kind of wavelet filter is constructed base of Continuous-wavelet transform.

基于连续小波域构造了一种滤波器。

A wavelet-based digital filter is designed in this paper, and the applications of wavelet to the protection for transformer are discussed.

本文设计了以小波变换为基础的数字滤波器，对小波变换在微机变压器保护算法方面的应用进行了研究。

Based on a kind of orthogonal complete functions in L2[0,1], another one (called V-system) which has equivalence relation with U-system is created. It is a kind of new and effective mathematical tool on signal multi-resolution analysis. Besides that V-system keeps the favorable properties of U-system and can accurately reconstruct geometry information which expressed in piecewise polynomials by finite sum of functions in V-system, it has more special properties, such as simple construction, abundant levels, convenience of application, quick calculation, local support, and so on. V-system is the generalization of Haar orthogonal functions, and to be a class of wavelet base. It has a good future for some applications in the fields of wavelet analysis and signal processing.

从L2[0，1]空间的一类正交完备函数系U系统出发，构造了另一类与之等价的正交完备函数系，称之为V系统，它是信号多分辨分析方面的一种新型的、有效的数学工具。V系统不仅保持了U系统的优良特性，对多项式表达的几何信息能够做到有限项精确重构，并且较之U系统，它更有结构简单、层次分明、计算快捷、局部支集等特点，应用起来将更加灵活方便。V系统可以看作是Haar函数系的推广，是一类小波基，在某些数字信号处理及小波分析问题中有良好的应用前景。

In this paper ,we describe in detail the basis theory of wavelet and study the applications of wavelet in the first kind singular integral equation and inverse heat conduction problems .

本文详细阐述了小波理论的基本知识，研究了小波在第一类奇异积分方程和逆热传导方程中的应用。

He got into race cars, while my father liked go-karts more, so I didn't really pay attention to what Diego was doing, as I was just racing karts.

叔叔开的是跑车，而我父亲更喜欢越野卡丁车，所以我并不太关注Diego在做什么，我仅仅在跑我的卡丁车而已。

She is at present gone to look for the best nectar and ambrosia to regale me this evening.

她今晚为款待我，现在又去准备美酒佳肴去了。