Sift Surf example Sift Surf example

结合PCA的尺度不变特征变换(SIFT)算法，均值便宜跟踪的示例，采用加权网络中节点强度和权重都是幂率分布的模型。- Combined with PCA scale invariant feature transform (SIFT) algorithm, Example tracking mean cheap, Using weighted model nodes in the network strength and weight are power law distribution.