查询词典 wavelets

A method of fabric defect detection based on double-deck orthonormal wavelets has been developed in this paper.

本文提出了基于二层自适应正交小波的织物疵点检测方法。

Finally, we can derive the decomposition and reconstruction formulas that are similar to those of orthonormal wavelets.

最后还给出类似于小波的小波紧框架的分解与重构算法。

Complex compactly-supported orthonormal wavelets and their applications in power system.

正交紧支复小波的生成及其在电力系统的应用。

Finally, the authors can derive the decomposition and reconstr uction formulas which are similar to those of orthonormal wavelets.

最后还给出类似于小波的小波紧框架的分解与重构算法。

At first, we constructed a family of smooth orthonormal bases of k-adic wavelets.

首先我们利用局部正弦与余弦基构造了L〓的k进小波正交基。

Using the orthonormalization technique, we obtain a finite difference representation of wavelets.

利用正交规范化，获得了小波的有限差分表示。

Combustion instability in liquid rocket engine is investigated with theoretical analyses, numerical simulations and experiments. Nonlinear science, such as Nonlinear Dynamics, Non- equilibrium Thermodynamics, and Wavelets, is introduced in the studies.Nonlinear oscillation equation of chamber pressure is established.

本文结合非平衡热力学、小波分析、非线性动力学等非线性学科，建立燃烧稳定性理论模型，发展两相喷雾燃烧非定常数值模拟程序，利用激光测粒系统，发动机高频热试系统等测试手段，重点围绕液体推进剂的化学动力学过程，对燃烧不稳定进行了较为系统的理论、仿真和实验研究。

A construction method of non-separable wavelets with dilation matrix of [1,1;1,-1] is proposed and applied to the fusion of multi-spectral images and panchromatic images with high resolution.

提出了伸缩矩阵为[1，1；1，-1]的不可分小波的一种构造方法，并把它应用于多光谱图像与高分辨力全色图像的融合中。

The main contributions include:(1) Energy conservation law of Haar wavelets transform is proved to compress data streams.(2) The relation between the coincidence measure and trend of streams is revealed as along with the invariability under parallel shift and the equivalence law over coincidence measure to approximately express data-streams by the wavelet coefficient of the characteristic stream and its energy.(3) Multi-Scales energy decomposition model is proposed to improve the compression precision.(4) The multi-scales compression algorithm and the energy conservation reconstruction algorithm are designed.(5) Extended experiments show that the compression ratio of the new methods is 2~4 times as the traditional method.

主要研究成果包括：(1)证明了Haar小波变换服从能量守恒规律，并用于压缩数据流；(2)揭示了数据流的偶合度与变化趋势的相关性、偶合度的平移不变性及等价规律，采用特征流序列的小波系数和流能量近似表示流的趋势，达到压缩的目的；(3)提出了多尺度能量分解模型，提高了表示精度；(4)设计了多尺度能量分解压缩算法以及多尺度重构算法；(5)在真实数据集上的实验表明，新方法的压缩比是传统小波方法的2～4倍。

The system's anti-multi-path fading ability is analyzed by the periodic auto-correlation function of multiwavelets and wavelets.

多小波分形调制在各尺度能够提供更多的子频带，为更多用户服务，具有更高的频带利用率。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。