opencv3_java 图像的角点检测DetectConers goodFeaturesToTrack

图像的角点检测DetectConers goodFeaturesToTrack 

package opencv_java_demo;

import org.opencv.core.*;
import org.opencv.imgcodecs.*;
import org.opencv.imgproc.*;

public class DetectConers {

public static void main(String[] args) {
try{
System.loadLibrary(Core.NATIVE_LIBRARY_NAME);

final int maxCorners=50,blockSize=3;
final double qualityLevel=0.01,minDistance=20.0,k=0.04;
final boolean useHarrisDetector=false;
MatOfPoint corners=new MatOfPoint();

Mat src=Imgcodecs.imread("./images/lenna.jpg");
if(src.empty()){
throw new Exception("no file");
}
Mat dst=src.clone();
Mat gray=new Mat();

Imgproc.cvtColor(src, gray, Imgproc.COLOR_RGB2GRAY);
Imgproc.goodFeaturesToTrack(gray, corners, maxCorners, qualityLevel, minDistance,
new Mat(),blockSize,useHarrisDetector,k);
Point[] pCorners=corners.toArray();
for(int i=0;i<pCorners.length;i++){
Imgproc.circle(dst, pCorners[i], 4, new Scalar(255,255,0),2);
}
Imgcodecs.imwrite("./images/corners.jpg", dst);
}catch(Exception e){
System.out.println("例外：" + e);
}
}
}