SIFT and SURF were moved to nonfree module. You need to add
#include <opencv2/nonfree/nonfree.hpp>
header and link with opencv_nonfree library.
本文转自博客园Grandyang的博客，原文链接：Solve problem 'SURF' is not a member of 'cv'，如需转载请自行联系原博主。
Solve problem 'SURF' is not a member of 'cv'
2017-12-03
1261
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