FAST特征点检测features2D

#include <opencv2/core/core.hpp>
#include <opencv2/features2d/features2d.hpp>
#include <opencv2/highgui/highgui.hpp>

#include <vector>

using namespace cv;

void main()
{
	Mat image;
	image = imread("d:\p.jpg");
	// vector of keyPoints
	std::vector<KeyPoint> keyPoints;
	// construction of the fast feature detector object
	FastFeatureDetector fast(40);	// 检测的阈值为40
	// feature point detection
	fast.detect(image,keyPoints);
	drawKeypoints(image, keyPoints, image, Scalar::all(255), DrawMatchesFlags::DRAW_OVER_OUTIMG);
	imshow("FAST feature", image);
	cvWaitKey(0);
}