Is surf descriptor extractor still available in opencv3.1?

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Does anybody know if surfdescriptorextractor is still available in opencv 3.1? if it is how may i use it can you direct me? Thanks in advance

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It's not included by default after Opencv 3.0, now this is in opencv_contrib at xfeatures2d module. You will need to compile with the contrib module.

https://github.com/Itseez/opencv_contrib/tree/master/modules/xfeatures2d/src

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