SIFT and SURF were moved to nonfree module. You need to add
#include <opencv2/nonfree/nonfree.hpp>
header and link with opencv_nonfree library.
SIFT and SURF were moved to nonfree module. You need to add
#include <opencv2/nonfree/nonfree.hpp>
header and link with opencv_nonfree library.
Solve problem 'SURF' is not a member of 'cv'
原文：http://www.cnblogs.com/grandyang/p/4385683.html