有详细的注释，均值便宜跟踪的示例，利用自然梯度算法，添加噪声处理，多姿态，多角度，有不同光照,是信号处理的基础。- There are detailed notes, Example tracking mean cheap, Use of natural gradient algorithm, Add noise processing, Much posture, multi-angle, have different light, Is the basis of the signal proc