QAM16_mini-project

基于离散傅立叶变换的数字水印matlab源码(Discrete Fourier Transform based on digital watermarking matlab source)

说明：  用MATLAB实现的数字水印的DCT算法，还包括本次试验的实验报告，对算法有详细的解读！(Implemented using MATLAB DCT digital watermarking algorithm, also including the test lab report, a detailed interpretation of the algorithm!)

用粒子群算法解决0/1背包问题，解决在背包体积有限的情况下，如何最大化的实现有效资源分配(Solve knapsack problem with particle swarm algorithm to solve the limited volume of the backpack, how to maximize the efficient allocation of resources to achieve)

模糊聚类的改进--先用减法聚类得到初始点，而后用模糊聚类得到聚类中心，能够提高聚类的速度和精度(Improved Fuzzy Clustering- first get the initial point subtraction clustering, and then get the cluster center with fuzzy clustering, clustering can improve the speed and accuracy)

里面是小波分析的实现方法，还有数学介绍。数字信号处理上机实验答案(第三版).docx的电子版(There is a wavelet analysis method, as well as mathematical description. Digital signal processing on the experimental answer (third edition). Electronic version of docx)

根据逆透视变换原理从交通图像中提取交通参数，可以根据图像的像素坐标计算实际路面的距离，计算车辆的位移，速度等参数(Extract traffic parameters from the traffic image according to the principle of inverse perspective transformation, the actual road distance can be calculated according to the coordinates of the image pixels, the calculation of the displacement of the vehicle speed and other parameters)

该matlab函数可以在matlab环境下读取pgm文件(To read the file of pgm format)

说明：  matlab对连续信号的抽样，对初学matlab者很有用(matlab sampling of continuous signals, is useful for beginners who matlab)

说明：  Direct Sequence Spread spectrum

四种传统算法进行DOA估计,前后向线性预测、最大熵、最小模(Four traditional DOA estimation algorithm, the forward and backward linear prediction, maximum entropy, minimum norm)