matlab有关数字信号处理方面的程序，希望能够给大家一点帮助。...

low pass filter code

数字图像处理，Matlab 6.5实现图像的腐蚀与膨胀。带有说明、例图与效果图。(Digital image processing, Matlab 6.5 implementation of the corrosion and expansion of the image. With that case diagram and effect diagram.)

这是对于雷克子波的处理过程，是对地震子波处理的缩写版(This is for the Ricker wavelet processing, seismic wavelet processing is the abbreviated version of)

PSO优化BP的源程序,加上作者的注释.(BP PSO optimization of the source, together with the author' s comments.)

Hi this is a gbvs file. this is a matlab file

ICP version 2. Removes one to many correspondences.

讲述了最大熵估计的方法，以及dsp的实现方法，比较清楚(spoke of the estimated maximum entropy method, and the realization dsp, more clearly)

二维MUR吸收方柱散射，该文件用MUR边界很好的处理了方柱散射问题。(2D rect scattering)

使用sift算法，找出图像的关键点，使用关键点作为匹配因子对两幅图像进行匹配，数据库中包含了丰富的可用图片库。(Use sift algorithm to find the image of the key points, key points to use as matching factor of two images match, the database contains a wealth of available gallery.)

The Vigenère cipher is a method of encrypting alphabetic text by using a series of different Caesar ciphers based on the letters of a keyword. It is a simple form of polyalphabetic substitution.Though the cipher is easy to understand and implement, for three centuries it resisted all attempts to break it this earned it the description le chiffre indéchiffrable (French for the indecipherable cipher ). Many people have tried to implement encryption schemes that are essentially Vigenère ciphers.[3] Friedrich Kasiski was the first to publish a general method of deciphering a Vigenère cipher.Unlike the monoalphabetic ciphers, polyalphabetic ciphers are not susceptible to frequency analysis, as more than one letter in the plaintext can be represented by a single letter in the encryption.