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OpenCV 2.4.3.1
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## Package org.opencv.features2d

Class Summary
DescriptorExtractor | Abstract base class for computing descriptors for image keypoints.
DescriptorMatcher | Abstract base class for matching keypoint descriptors.
DMatch | Structure for matching: query descriptor index, train descriptor index, train image index and distance between descriptors.
FeatureDetector | Abstract base class for 2D image feature detectors.
Features2d |
GenericDescriptorMatcher | Abstract interface for extracting and matching a keypoint descriptor.
KeyPoint | Data structure for salient point detectors.

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Official OpenCV 2.4 Documentation
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