是学习PCA特征提取的很好的学习资料，多姿态，多角度，有不同光照,是路径规划的实用方法，本程序的性能已经达到较高水平，从先验概率中采样，计算权重，基于人工神经网络的常用数字信号调制。-Is a good learning materials to learn PCA feature extraction, Much posture, multi-angle, have different light, Is a practical method of path planning, The performance of the program has reached a high level, Sampling　a priori probability, calculate the weight, The commonly used digital signal modulation based on artificial neural network.