OpenCV: Descriptor Matchers

| OpenCV 3.4.2 Open Source Computer Vision

Classes
Descriptor Matchers
2D Features Framework

## Classes
class | cv::BFMatcher
| Brute-force descriptor matcher. More...
class | cv::DescriptorMatcher
| Abstract base class for matching keypoint descriptors. More...
class | cv::FlannBasedMatcher
| Flann-based descriptor matcher. More...

## Detailed Description

Matchers of keypoint descriptors in OpenCV have wrappers with a common interface that enables you to easily switch between different algorithms solving the same problem. This section is devoted to matching descriptors that are represented as vectors in a multidimensional space. All objects that implement vector descriptor matchers inherit the DescriptorMatcher interface.

Note
  - An example explaining keypoint matching can be found at opencv_source_code/samples/cpp/descriptor_extractor_matcher.cpp
    - An example on descriptor matching evaluation can be found at opencv_source_code/samples/cpp/detector_descriptor_matcher_evaluation.cpp
    - An example on one to many image matching can be found at opencv_source_code/samples/cpp/matching_to_many_images.cpp