AGAST特征点,AgastFeatureDetector
AGAST特征点,算法速度比FAST和FASTER更快。
【函数】
Ptr<AgastFeatureDetector> create( int threshold=10, bool nonmaxSuppression=true, int type=AgastFeatureDetector::OAST_9_16 );
【参数】
threshold——阈值
nonmaxSuppression——非极大值抑制
type——邻域类型
【案例】
#include <opencv2/opencv.hpp> #include <iostream> using namespace std; using namespace cv; int main() { Mat srcImage = imread("D:/sunflower.png"); Mat srcGrayImage; if (srcImage.channels() == 3) { cvtColor(srcImage,srcGrayImage,CV_RGB2GRAY); } else { srcImage.copyTo(srcGrayImage); } vector<KeyPoint>detectKeyPoint; Mat keyPointImage; Ptr<AgastFeatureDetector> agast = AgastFeatureDetector::create(); agast->detect(srcGrayImage,detectKeyPoint); drawKeypoints(srcImage,detectKeyPoint,keyPointImage,Scalar(0,0,255),DrawMatchesFlags::DEFAULT); imshow("src image",srcImage); imshow("keyPoint",keyPointImage); waitKey(0); return 0; }