查询词典 laplace transform

Based on the time-frequency analysis (continuous wavelet transform and short time Fourier transform), the arithmetic uses the modulus maximum characteristic on the phase scale and carry frequency scale to recognize phase modulation rule of signal. So without whole wavelet coefficient the signal mathematics model can be obtained quickly. It provides well condition for application of arithmetic in practice.

该算法基于信号的时频分析（小波分析和短时傅里叶变换），利用小波变换的相位尺度和载波尺度的模极大值特征辨识信号的相位调制规律，因而在无需计算全部小波系数的情况下，可快速地获得信号的数学模型，为算法在实际中的应用提供了良好的条件。

Yanowitz algorithm which interpolates the image grey by gradient imformation. Then it can get water meter frame information by horizontal and vertical projection, and extract line by improved Hough transform. Finally, the image can be corrected by affine transform.

Yanowitz算法，能够很好的分割目标和背景；再利用水平和竖直投影提取水表表框信息；然后再利用改进的Hough变换提取表框范围内直线，对结果进行统计分析，求出水表的倾斜角度；最后采用逆仿射变换的方法，对表框图像进行双线性插值旋转，得到表框的矫正图像。

A novel scheme based on wavelet transform and its reversible transform of fault recording data compression in power systems by adopting lifting algorithm is presented in this paper.

利用提升算法实现了一个基于小波变换的电网故障录波数据压缩的新方案，从采样频率的角度首次给出确定最优分解层数的公式，说明了压缩比与频率的关系；结合实际录波数据，选定误差上限后，给出了通用阈值法中参数的优化取值；对比分析了软硬阈值处理方法。

As for the RST transform in image registration, corresponding formula of box distance transform is dieduced.

摘要针对图像配准中常出现的RST变换，推导出了相应的盒距离变换公式。

A modified local Hough transform is proposed to look for line correspondences and get transform parameters.

一种改进的局域Hough变换用来寻找多直线对，通过分析所有直线对的情况，得到变换参数。

By using Wavelet Transform and the Discrete Cosine Transform,the effective feature extractions of different characters are got.

利用小波变换和离散余弦变换，提取不同字符的有效特征。

Nonuniform Fourier Transform has a variety of applications such as in radar, medical imaging and radio astronomy. Over the last few years, several algorithms have been developed for computing the NUF based on interpolating an oversampled Fast Fourier Transform.

非均匀傅里叶变换在雷达、通信、医学成像、射电天文学等诸多领域都获得了广泛应用，其快速计算是近年来的研究热点，通常非均匀傅里叶变换是在快速傅里叶变换的基础上通过内插来计算的。

The differences between critical sampling Gabor transform and oversampling Gabor transform are compared.

六、研究和比较了临界抽样Gabor变换和过抽样Gabor变换在图象处理的影响。

Based on the theory of fractional Fourier transform and one of its very important parameter, fractional order, the relationship between FRT and Fresnel diffraction are deduced and analyzed. The fractional Fourier transform hologram reconstructed with the Lohmann Ⅰ FRT system is presented and its computer simulation and digital reconstruction are realized. It is shown that FRT is an ideal tool to describe Fresnel diffraction,and the FRTH can record information on the object and the system at the same time,which extends the application areas of FRT and holography.

基于分数傅里叶变换理论并以分数阶这一重要参量为纽带，推导和分析了分数傅里叶变换与菲涅耳衍射之间的关系；提出了基于罗曼I型分数傅里叶变换系统的分数傅里叶变换全息图，并实现了其计算机生成及数字重现；研究表明，分数傅里叶变换是描述菲涅耳衍射的理想工具，分数傅里叶变换全息图可以同时记录物体和系统的信息，开拓了分数傅里叶变换和全息术的应用领域。

It has been proved that Reichardt's Elementary Motion Detector can perform figure-ground discrimination efficiently, and Wavelet transform analysis is similar to the multi-frequency channel of human vision. So we combine EMD, Wavelet transform and Pyramid image processing together, to propose a new motion estimation algorithm. The computer simulation results reveal that the proposed algorithm can well simulate vistual motion evaluation.

本文利用Reichardt的相关型初级运动检测器二维阵列可以有效地进行图象－背景相对运动分辨的特点，以及小波变换的频谱分析特性与人类视觉多频率通道特性相类似的性质，将EMD模型、小波变换和图象的塔式结构处理有机地结合起来，提出了一种类似视觉信息加工方式的新的运动分析算法。

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。