chapter02

对图像矩阵进行zigzag扫描,从而达到对图像纹理（灰度值）置乱的效果。( scanning of the image matrix by Zigzag，To achieve the scrambling effect of the image texture (gray value).)

在图像的DCT系数上嵌入信息，图像为常见的512*512大小的灰度图（实验所用图像为LENA.BMP）。嵌入的信息为一二进制Logo图（实验所用logo图为tj-logo.bmp），该图大小为32*32，共1024个Bit。 1. 在LENA图中嵌入水印，输出嵌入后的水印图像。 2. 对水印图像解码，输出解码后得到的logo图，并统计错误率。 3. 使用不同的嵌入强度进行嵌入，观察其对作品直觉效果和解码效果的影响，绘制相应的曲线。 4. 使用加入噪声、改变对比度、JPEG压缩等攻击方法对水印作品进行攻击，查看解码的效果。 (Information embedded in the DCT coefficients of the image, the image of the common 512* 512 size gray-scale (experimental image LENA.BMP). Information embedded in a binary Logo Figure (used in the experiment logo picture shows the tj-logo.bmp), the plot size 32* 32, 1024 Bit. LENA Figure embedded watermark, the watermark image output embedded. (2) logo watermark image decoding, the output decoded Figure statistical error rate. (3) using a different embedding strength for embedding, observe the works intuitive effects and decoding results, and draw the corresponding curve. (4) by adding the noise, change the contrast, JPEG compression attack methods to attack, to see the effect of decoding the watermark works.)

这是对6—PUS并联机器人的运动学仿真及运动轨迹跟踪(This is the kinematics simulation and trajectory tracking of the 6-PUS parallel manipulato)

采用matlab，代码经过修改，可以去除阴影，但还不能在实际应用中用，不过有一定的参考价值(Using matlab, the code has been modified to remove the shadow, but it can not be used in the actual application, but there is a certain reference value)

LSD直线检测 基于LSD的直线提取算法(line segment detector)

说明：  基于模糊C均值的快速点云的聚类分析代码，可用于模糊聚类(Clustering analysis code of fast point cloud based on fuzzy c-means can be used for fuzzy clustering)

一段音频处理程序，FFT+降噪，简单的试验适合初学者(An audio processor, FFT+ noise reduction, a simple test for beginners)

北斗二代接收机中的跟踪程序，模块有载波环（二阶FLL，三阶PLL），FLL辅助PLL,码环是用二阶DLL，再用载波环辅助码环(Compass II receiver tracking program, module carrier ring (second-order FLL, the third-order PLL), FLL auxiliary PLL, code ring is by Second DLL, then the carrier ring auxiliary code ring)

帅选出人体,yolo人员检测，yolo模型，并识别(peole detect and get the pix point of it ,)

光流法、帧间差分法、高斯背景模型差分法，在opencv环境下实现运动目标检测(moving objective detection matlab)