OpenCV  3.4.9
Open Source Computer Vision
Classes | Typedefs
Non-free 2D Features Algorithms


class  cv::xfeatures2d::SIFT
 Class for extracting keypoints and computing descriptors using the Scale Invariant Feature Transform (SIFT) algorithm by D. Lowe [132] . More...
class  cv::xfeatures2d::SURF
 Class for extracting Speeded Up Robust Features from an image [12] . More...
class  cv::cuda::SURF_CUDA
 Class used for extracting Speeded Up Robust Features (SURF) from an image. : More...


typedef SIFT cv::xfeatures2d::SiftDescriptorExtractor
typedef SIFT cv::xfeatures2d::SiftFeatureDetector
typedef SURF cv::xfeatures2d::SurfDescriptorExtractor
typedef SURF cv::xfeatures2d::SurfFeatureDetector

Detailed Description

This section describes two popular algorithms for 2d feature detection, SIFT and SURF, that are known to be patented. You need to set the OPENCV_ENABLE_NONFREE option in cmake to use those. Use them at your own risk.

Typedef Documentation

◆ SiftDescriptorExtractor

◆ SiftFeatureDetector

◆ SurfDescriptorExtractor

◆ SurfFeatureDetector