Java+opencv3.2.0实现人脸检测功能

import org.opencv.core.Core;
import org.opencv.core.Mat;
import org.opencv.core.MatOfRect;
import org.opencv.core.Point;
import org.opencv.core.Rect;
import org.opencv.core.Scalar;
import org.opencv.imgcodecs.Imgcodecs;
import org.opencv.imgproc.Imgproc;
import org.opencv.objdetect.CascadeClassifier;
public class FaceDetect
{

  public static void main(String[] args)
  {
    // TODO Auto-generated method stub
    System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
    System.out.println("\nRunning FaceDetector");
    CascadeClassifier faceDetector = new CascadeClassifier();
    faceDetector.load(
        "C:\\Program Files\\opencv\\sources\\data\\haarcascades\\haarcascade_frontalface_alt.xml");
    Mat image = Imgcodecs.imread("F:\\1114.jpg");

    MatOfRect faceDetections = new MatOfRect();
    faceDetector.detectMultiScale(image, faceDetections);
    System.out.println(String.format("Detected %s faces", faceDetections.toArray().length));
    for (Rect rect : faceDetections.toArray())
    {
      Imgproc.rectangle(image, new Point(rect.x, rect.y),
          new Point(rect.x + rect.width, rect.y + rect.height), new Scalar(0, 255, 0));
    }

    String filename = "F:\\ouput.jpg";
    Imgcodecs.imwrite(filename, image);
  }
}