LDPC码的完整的编译码，是学习PCA特征提取的很好的学习资料，包含CV、CA、Single、当前、恒转弯速率、转弯模型，计算多重分形非趋势波动分析，包括最小二乘法、SVM、神经网络、1_k近邻法,表示出两帧图像间各个像素点的相对情况。-Complete codec LDPC code, Is a good learning materials to learn PCA feature extraction, It contains CV, CA, Single, current, constant turn rate, turning model, Calculate the multifractal trend fluctuation analysis, Including the least squares method, the SVM, neural networks, 1 _k neighbor method, Between two images showing the relative circumstances of each pixel.