Example usage for org.opencv.videoio VideoCapture isOpened

Introduction

In this page you can find the example usage for org.opencv.videoio VideoCapture isOpened.

Prototype

public boolean isOpened() 

Source Link

Usage

From source file:spycam.Spycam.java

public static void main(String args[]) {
    System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
    VideoCapture camera = new VideoCapture(0);

    if (!camera.isOpened()) {
        System.out.println("Error");
    } else {//from w w  w. java2s  .c  o m
        Mat frame = new Mat();
        while (true) {
            if (camera.read(frame)) {
                System.out.println("Frame Obtained");
                System.out.println("Captured Frame Width " + frame.width() + " Height " + frame.height());
                Imgcodecs.imwrite("camera.jpg", frame);
                System.out.println("OK");
                break;
            }
        }
    }
    camera.release();
}

---

From source file:webcamfacedetect.WebcamFaceDetect.java

/**
 * @param args the command line arguments
 *///from ww  w.jav a2  s .c  om
public static void main(String args[]) {
    // Load the native library.
    Libloader.load();
    String window_name = "Capture - Face detection";
    JFrame frame = new JFrame(window_name);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(1024, 800);
    FaceDetect faceDetect = new FaceDetect();
    Processor my_processor = new Processor();
    frame.setContentPane(faceDetect);
    frame.setVisible(true);
    // Read the video stream  
    Mat webcam_image = new Mat();
    VideoCapture capture = null;
    for (int numCam = 0; numCam < 5; numCam++) {
        try {
            capture = new VideoCapture(numCam);
            break;
        } catch (Exception e) {
            System.out.println("Webcam number " + numCam + " unavailable ...");
        }
    }
    if (capture.isOpened()) {
        while (true) {
            capture.read(webcam_image);
            if (!webcam_image.empty()) {
                frame.setSize(webcam_image.width() + 40, webcam_image.height() + 60);
                // Apply the classifier to the captured image  
                webcam_image = my_processor.detect(webcam_image);
                // Display recognized image  
                faceDetect.MatToBufferedImage(webcam_image);
                faceDetect.repaint();
            } else {
                System.out.println("No captured frame. Exit.");
                break;
            }
        }
    }
}

---

• «
• 1
• 2
• »