imgretrieval

　传统的信号理论，是建立在Fourier分析基础上的，而Fourier变换作为一种全局性的变化，其有一定的局限性。在实际应用中人们开始对Fourier变换进行各种改进，小波分析由此产生了。小波分析是一种新兴的数学分支，它是泛函数、Fourier分析、调和分析、数值分析的最完美的结晶；在应用领域，特别是在信号处理、图像处理、语音处理以及众多非线性科学领域，它被认为是继Fourier分析之后的又一有效的时频分析方法。 小波变换与Fourier变换相比，是一个时间和频域的局域变换因而能有效地从信号中提取信息，通过伸缩和平移等运算功能对函数或信号进行多尺度细化分析（Multiscale Analysis），解决了Fourier变换不能解决的许多困难问题。(The traditional signal theory, is based on Fourier analysis based on Fourier transform, and as a kind of global change, it has some limitations. In the actual application of Fourier transform people began to various improved, wavelet analysis produced. Wavelet analysis is a new branch of mathematics, it is functional, Fourier analysis, harmonic analysis, numerical analysis of the crystallization of the most perfect In the fields of application, especially in signal processing, image processing, audio processing as well as many nonlinear scientific fields, it is considered to be the Fourier analysis after another effective time-frequency analysis method. Wavelet transformation and Fourier transform, compared is a time and frequency domain and the local transform can effectively extract information from signal, through the telescopic peace shift etc operation function of the function ? )

希尔伯特黄变换（HHT）变换，在众多领域都有应用，适合初学者学习(Hilbert Huang Transform (HHT) transformation has applications in many fields, suitable for beginners to learn)

自由空间入射 二维高斯光束的模拟 （PML边界）(The free space incident two-dimensional analog of the Gaussian beam (PML boundary))

直流电动机转速负反馈系统的仿真源文件。。。。。。(DC motor speed negative feedback system simulation source files.)

涵盖了多种方法对多源图像进行图像融合的程序(Covers a wide range of multi-source image fusion process)

This Document describes the design of cluturing Network in A WSN

说明：  基于MATLAB图像处理的应用及参考代码(MATLAB-based image processing applications and reference code)

为24xx系列存储器的英文资料,pdf格式(Material of 24xx serier memory,pdf file.)

全面学习matlab的ppt基础教程，入门必备(The basis of a comprehensive study of the matlab ppt tutorial, beginners must)

对气隙磁通进行FFT，可以准确的实现对电机气隙磁通的分析(FFT of air gap magnetic flux can accurately analyze the air gap flux of the motor)