Simulinkkejianzhuyaobufen

本文算法是将24 位真彩图的亮度分量分块 DCT ,然后利用DCT 量化系数的奇偶特性嵌入8 位灰度水印图,并通过PN 序列加密来保证水印的 安全性。算法中,将灰度图像转换为二进制数据 流,置乱后扩频调制,隐藏在宿主DCT 系数量化值 中,提取时不需要宿主信号,实现水印信号的盲提 取。(This algorithm is 24-bit true color pictures of the luminance component of block DCT, quantization DCT coefficients and then use the parity properties of 8-bit grayscale watermark embedding map, and through the PN sequence of encryption to ensure the security of the watermark. Algorithm, the gray image into binary data stream, scrambling after the spread spectrum modulation, hidden in the host DCT coefficient quantization values, the extraction does not require the host signal, the blind watermark extraction.)

说明：  ：图像增强是图像处理的一个重要分支，是图像边缘提取、图像分割等的基础．文章介绍了常用的图像增强技 术，并且以Madab为工具完成图像的直方图均衡化、巴特沃斯高通滤波器操作的示例，给出了处理前后的对照图像．重点介 绍了利用小波变换进行图像增强，获得了比较好的增强效果．(: Image enhancement is an important branch of image processing is the image edge extraction, image segmentation, etc. basis. This paper introduces the commonly used image enhancement technology, and to Madab as a tool to complete the image histogram equalization, Butterworth high-pass filter operation of an example is given before and after contrast images. Focuses on image enhancement using wavelet transform to obtain a relatively good enhancement.)

最小相位子波生成:可调整信号的采样率，时长，最大振幅等(generate minimum phase wavelet )

hopping code in digital communication systems

基于单点声源的最优统计算法仿真模拟确定声压幅值。(Based on the single point sound source statistical optimal algorithm simulation to determine the pressure magnitude.)

nsga2经典进化算法 matlab编写。运行正常(nsga2 classic evolutionary algorithm)

给定离散地震动加速度数据a、反应谱控制周期点tp、离散时间间隔dt、阻尼比z，计算地震动加速度反应谱rspa以及最大反应值出现的时刻tMax。(Given the discrete ground-motion acceleration data a, the response spectral controlling period tp, the discrete time distance dt, and the damping ratio z, calculate the ground-motion acceleration response spectrum rspa and the time loction of the occurrence of maximum response.)

说明：  matlab using this edf file

小波去噪matlab程序，有demo，本人已运行，能用，大家可以试一试。(Wavelet denoising matlab program, demo, I have to run, can be used, we can try.)

根据多年的是matlab 教学经验，制作一个RBF神经网络的学习视频，希望对matlab学习者有帮助。(Based on many years of teaching experience, I made a video of how to learn RBF neural network by matlab ,hope to help learners of matlab .)