中文说明：OPENSURF，这个函数是冲浪 (加速了强大的功能) 的一种实现。冲浪将检测具有里程碑意义的点在图像中，并由一个向量，是反对 (一点点) 旋转、 缩放和噪声鲁棒介绍点。它可以在材料的筛选 （尺度不变特征转换），获得专利的相同的方式使用。因而要对齐两个或多个图像基于相应的点，或使 3D 重建。
English Description：
This function OPENSURF, is an implementation of SURF (Speeded Up Robust Features). SURF will detect landmark points in an image, and describe the points by a vector which is robust against (a little bit) rotation ,scaling and noise. It can be used in the same way as SIFT (Scale-invariant feature transform) which is patented. Thus to align two or more images based on corresponding points, or make 3D reconstructions.