| OpenCV 5.0.0alpha Open Source Computer Vision

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nonfree.hpp File Reference
`#include "opencv2/features.hpp"`
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## Classes
class | cv::xfeatures2d::SURF
| Class for extracting Speeded Up Robust Features from an image [20] . More...

## Namespaces
namespace | cv
namespace | cv::xfeatures2d

## Typedefs
typedef SURF | cv::xfeatures2d::SurfDescriptorExtractor
typedef SURF | cv::xfeatures2d::SurfFeatureDetector