This is the complete Source Code of the Project. It works, it detects the camera, frame set. But my problem is on how to detect the real-time detection of the image captured. I hope someone will help me regarding on this project. If you do, thanks a lot for helping me.. Best regards...
package opencv;
import org.opencv.highgui.HighGui;
import java.io.ByteArrayInputStream;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import org.opencv.core.Core;
import org.opencv.core.Mat;
import org.opencv.core.MatOfByte;
import org.opencv.videoio.VideoCapture;
import org.opencv.videoio.Videoio;
import org.opencv.imgcodecs.Imgcodecs;
import org.opencv.core.MatOfRect;
import org.opencv.core.Point;
import org.opencv.core.Rect;
import org.opencv.core.Scalar;
import org.opencv.imgproc.Imgproc;
import org.opencv.objdetect.CascadeClassifier;
public class OpenCV extends Application {
static {
System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
}
private boolean isStart = false;
private VideoCapture capture;
private ScheduledExecutorService timer;
private BorderPane root;
private VBox vboxCenter;
private ImageView frame;
private HBox hboxBottom;
private Button videoButton, exitButton;
@Override
public void start(Stage primaryStage) {
initGui();
capture = new VideoCapture();
exitButton.setOnAction((ActionEvent event) -> {
System.exit(0);
});
videoButton.setOnAction((ActionEvent event) -> {
if (!isStart) {
frame.setFitWidth(640);
frame.setFitWidth(480);
frame.setPreserveRatio(true);
capture.open(0);
capture.set(Videoio.CAP_PROP_FRAME_WIDTH, 640);
capture.set(Videoio.CAP_PROP_FRAME_HEIGHT, 480);
if (capture.isOpened()) {
isStart = true;
Runnable frameGrabber = new Runnable() {
@Override
public void run() {
//This code detect the camera and load the frame set
Image imageToShow = grabFrame();
frame.setImage(imageToShow);
CascadeClassifier faceDetector =
new CascadeClassifier("C:/Users/BEREDJ/Documents/NetBeansProjects/"
+ "openCV/src/lbpcascades/lbpcascade_frontalcatface.xml");
Mat image = Imgcodecs.imread("C:/Users/BEREDJ/Documents/"
+ "NetBeansProjects/openCV/src/lbpcascades/image.png");
MatOfRect faceDetections = new MatOfRect();
faceDetector.detectMultiScale(image, faceDetections);
System.out.println(String.format("Detected %s faces",
faceDetections.toArray().length));
// Draw a bounding box around each face.
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));
}
//Save the visualized detection.
String filename = "faceDetection.png";
System.out.println(String.format("Writing %s", filename));
Imgcodecs.imwrite("faceDetection.png", image);
}
};
timer = Executors.newSingleThreadScheduledExecutor();
timer.scheduleAtFixedRate(frameGrabber, 0, 33, TimeUnit.MILLISECONDS);
videoButton.setText("Stop");
} else {
System.err.println("Open Camera Error!");
}
} else {
isStart = false;
videoButton.setText("Start");
try {
timer.shutdown();
timer.awaitTermination(33, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
System.err.println(e);
}
capture.release();
frame.setImage(null);
}
});
Scene scene = new Scene(root, 800, 640);
primaryStage.setTitle("Video Capture Demo");
primaryStage.setScene(scene);
primaryStage.show();
}
private Image grabFrame() {
Image result = null;
Mat image = new Mat();
if (capture.isOpened()) {
capture.read(image);
if (!image.empty()) {
result = mat2Image("Detection.png", image);
}
}
return result;
}
public static Image mat2Image(String ext, Mat image) {
MatOfByte buffer = new MatOfByte();
Imgcodecs.imencode(ext, image, buffer);
return new Image(new ByteArrayInputStream(buffer.toArray()));
}
private void initGui() {
root = new BorderPane();
vboxCenter = new VBox();
vboxCenter.setAlignment(Pos.CENTER);
vboxCenter.setPadding(javafx.geometry.Insets.EMPTY);
frame = new ImageView();
vboxCenter.getChildren().addAll(frame);
root.setCenter(frame);
hboxBottom = new HBox();
hboxBottom.setAlignment(Pos.CENTER);
hboxBottom.setPadding(javafx.geometry.Insets.EMPTY);
videoButton = new Button("Start");
exitButton = new Button ("Exit");
hboxBottom.getChildren().addAll(videoButton,exitButton );
root.setBottom(hboxBottom);
}
public static void main(String[] args) {
launch(args);
}
}
