针对定向二进制简单描述符（ORB）算法不具备尺度不变性的问题,提出一种结合快速鲁棒性特征（SURF）算法和ORB的改进算法。首先,利用Hessia......

Let fn be a non-parametric kernel density estimator based on a kernel function K. and a sequence of independent and iden......