OpenCV中DrawMatchesFlags的几种形式

1. 如何使用

#include <opencv2/opencv.hpp>
#include <opencv2/xfeatures2d.hpp> // 添加SURF
#include <iostream>

using namespace std;
using namespace cv;
using namespace cv::xfeatures2d; // 添加SURF相关命名空间

int main(int argc, char** argv)
{
	Mat src = imread("test.jpg", IMREAD_COLOR);
	imshow("src", src);
	int minHessian = 5000;
	Ptr<SURF> detector = SURF::create(minHessian);
	vector<KeyPoint> keypoints1;
	detector->detect(src, keypoints1);
	Mat img_keypoints1;
	drawKeypoints(src, keypoints1, img_keypoints1, Scalar::all(-1), DrawMatchesFlags::DRAW_RICH_KEYPOINTS);
	imshow("DrawMatchesFlags", img_keypoints1);

	waitKey(0);
	return 0;
}

2.官方文档

Public Types

enum  	{
  DEFAULT = 0,
  DRAW_OVER_OUTIMG = 1,
  NOT_DRAW_SINGLE_POINTS = 2,
  DRAW_RICH_KEYPOINTS = 4
}

3. 代码测试