实时的在线跟踪算法，使用的是卷积核的算法。速度可以达到100帧以上-this is a code of tracking,which is based on the algorithm of KCF.It can be get a speed of 100 Fps

SIFT算法是在不同的尺度空间上查找关键点,而尺度空间的获取需要使用高斯模糊来实现,Lindeberg等人已证明高斯卷积核是实现尺度变换的唯一变换核-SIFT algorithm is to find the key points on the different scales of space and capture scale space requires the use of a Gaussian blur to achieve, Lindeberg, who has proved a G