shuangkui002

Image Fusion (A slide tutorial by Dr.-Ing Michael Heizmann.)

一些源代码，主要是图像处理方面的，希望对以后的读者有帮助(Some source code, mainly image processing, and hope to help future readers)

通信中各种数字调制方法的matlab实现(Communication in a variety of digital modulation methods matlab implementation)

matlab demo code .. .. .. ..

研究LDPC码的EXIT性能经典论文汇总，包括早期EXIT和PEXIT，以及部分关于LDPC编码领域的论文(Research on the performance of the LDPC code EXIT classic paper summary, including early EXIT and PEXIT, and some papers on the LDPC encoding field)

基于混沌序列的二值图像加密算法：提 出了一种以混沌二值序列为基础的图像加密算法 ， 改进了灰度差置乱度算法来评价二值图像加密 效果 ， 最后对混沌序列对初始条件的敏感性、 相邻像素差置乱度、 图像加密／ 解密速度进行了大量测试。(Based on Chaotic Encryption Algorithm of Binary Image: A chaotic binary sequences with an image encryption scheme based on improved gray scrambling degree difference algorithms to encrypt binary image evaluation results, the last of the original chaotic sequence conditions of the sensitivity of adjacent pixels difference scrambling, Image encryption/decryption speed of a large number of tests.)

Ant Colony optimization solving sales man problem

一种传统搜索优化算法 不需要对目标函数求导 得到很好的优化效果(A traditional search algorithm does not need to differentiate the objective function ,also gets well optimized results)

DFT进行频谱分析时的三种现象 1、混叠：对连续信号采样，要求连续信号是带限的，采样频率要足够高。Fs应满足Nyquist采样定理才不产生混叠。 采样前加低通滤波器防混叠 2、频谱泄漏：DFT对时域信号进行了截断（相当于采样信号乘了一个窗函数），时域的乘积相当于频域卷积，改变了原信号频谱。 改用其他窗函数（非矩形）改善泄漏。 3、栅栏现象：DFT 只给出了频谱在采样点上的取值，采样点间的频谱内容丢失。(DFT spectrum analysis of a three phenomena, aliasing : continuous signal sampling, requiring continuous signal is band-limited, the sampling frequency should be high enough. Fs meet the Nyquist Sampling Theorem would not have aliasing. Sampling former low-pass filter plus anti-aliasing 2, spectrum leakage : DFT right time domain signal a disconnect (equivalent to a sampling signal by a window function). time domain is equivalent to the product of frequency-domain convolution, changes in the spectrum of the original signal. Window functions to switch to other (non-rectangular) to improve leakage. 3, fenced phenomenon : DFT spectrum is given only at the sampling point value, sampling points of the spectrum as lost.)

mdi 图片的vc动态显示方法，实现图片的动态切换显示(dynamic switching mdi picture vc dynamic display picture display)