Fingerprintimageinhancement

利用ostu算法实现阈值分割，将灰度图像变为2值图像输出(To use ostu algorithms thresholding the grayscale image into a two-value image output)

Swarm Optimization is a good technique

说明：  基于MATLAB的BP神经网络非线性映射能力实现图像压缩。(MATLAB Based on BP neural network nonlinear mapping capability for image compression.)

1. To design FIR filters in MATLAB to achieve various types of frequency selectivity, e.g., lowpass, highpass，bandpass, etc 2. To verify the frequency response of the designed filters in MATLAB 3. To implement the designed FIR filters using C6713 DSK and 4. To perform real-time testing of the performance of the designed FIR filters.

效果最好的三种二值化的方法 otsu niblack等 是自适应阈值方法(The best effect of three kinds of binarization methods otsu niblack, etc Is the adaptive threshold value method。)

RNNSIM ver. 1.0 is a program with an intercative graphical user interface (GUI) that runs under MATLAB ver. 5.0 or higher. The program can be used in training and testing the Random Neural Network(RNN) models. This version (ver. 1.0) implements only the 3 layer feed forward RNN model. In the next versions, the multi hidden layers and the recurrent RNN models can be implemented. To obtain faster training, the training section can be written as a MEX file and invoked from the GUI. If you have the m files in the directory rnnsim for example, then you can run the program following the next steps: 1- run MATLAB as usual 2- from the MATLAB command window, write cd rnnsim 3- from the MATLAB command window, write rnnsim

说明：  viterbi 解码程序，用matlab编写。希望对大家有用。(viterbi decoding process, using matlab write. Hope to be useful.)

mimo 仿真程序，可供初学mimo的同学参考。(mimo simulation program, available for beginner students mimo reference.)

BEASF Algorithm is implemented by Image enhancement using Bi-Histogram Equalization with adaptive sigmoid .

利用折射率调制的变迹方式，对光纤光栅的旁瓣进行切趾抑制。(Apodized refractive index modulation, the optical fiber grating sidelobe suppression of the apodization.)