Example usage for org.opencv.core Rect Rect

Introduction

In this page you can find the example usage for org.opencv.core Rect Rect.

Prototype

public Rect(double[] vals) 

Source Link

Usage

From source file:ch.zhaw.facerecognitionlibrary.Helpers.FaceDetection.java

License:Open Source License

public Eyes getEyes(Mat img) {
    double halfWidth = img.cols() / 2;
    double height = img.rows();
    double[] values = new double[4];
    values[0] = 0;/*w  ww.  ja v  a  2s  .com*/
    values[1] = 0;
    values[2] = halfWidth;
    values[3] = height;
    Rect rightHalf = new Rect(values);
    values[0] = halfWidth;
    Rect leftHalf = new Rect(values);
    MatOfRect rightEyes = new MatOfRect();
    MatOfRect leftEyes = new MatOfRect();

    Mat rightHalfImg = img.submat(rightHalf);
    rightEyeDetector.detectMultiScale(rightHalfImg, rightEyes);
    Mat leftHalfImg = img.submat(leftHalf);
    leftEyeDetector.detectMultiScale(leftHalfImg, leftEyes);

    if (rightEyes.empty() || leftEyes.empty() || rightEyes.toArray().length > 1
            || leftEyes.toArray().length > 1) {
        return null;
    }

    Rect rightEye = rightEyes.toArray()[0];
    Rect leftEye = leftEyes.toArray()[0];

    MatOfFloat rightPoint = new MatOfFloat(rightEye.x + rightEye.width / 2, rightEye.y + rightEye.height / 2);
    MatOfFloat leftPoint = new MatOfFloat(img.cols() / 2 + leftEye.x + leftEye.width / 2,
            leftEye.y + leftEye.height / 2);

    MatOfFloat diff = new MatOfFloat();
    Core.subtract(leftPoint, rightPoint, diff);
    double angle = Core.fastAtan2(diff.toArray()[1], diff.toArray()[0]);
    double dist = Core.norm(leftPoint, rightPoint, Core.NORM_L2);
    Eyes eyes = new Eyes(dist, rightPoint, leftPoint, angle);
    return eyes;
}

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From source file:uk.ac.horizon.artcodes.detect.ImageBuffers.java

License:Open Source License

public Mat getImageInGrey() {
    if (currentBuffer == yuvBuffer) {
        double[] rectArray = { 0, 0, yuvBuffer.cols(), (yuvBuffer.rows() / 3) * 2 };
        greyBuffer = yuvBuffer.submat(new Rect(rectArray));
    } else if (currentBuffer == bgrBuffer) {
        Imgproc.cvtColor(getBgrBuffer(), getGreyBuffer(), Imgproc.COLOR_BGR2GRAY);
    } else {/* w w w.j a  v a 2s  . c o  m*/
        getGreyBuffer();
    }
    currentBuffer = greyBuffer;
    return greyBuffer;
}

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From source file:uk.ac.horizon.artcodes.detect.ImageBuffers.java

License:Open Source License

public Mat getGreyBuffer() {
    if (greyBuffer == null) {
        if (yuvBuffer != null) {
            double[] rectArray = { 0, 0, yuvBuffer.cols(), (yuvBuffer.rows() / 3) * 2 };
            greyBuffer = yuvBuffer.submat(new Rect(rectArray));
        } else {/*  w ww .  ja  va2s  .  com*/
            Log.w(getClass().getSimpleName(), "Creating grey buffer in getGreyBuffer()");
            greyBuffer = new Mat(ROI.height, ROI.width, CvType.CV_8UC1);
        }
    }
    return this.greyBuffer;
}

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From source file:uk.ac.horizon.artcodes.detect.ImageBuffers.java

License:Open Source License

public void setROI(Rect rect) {
    this.ROI = rect;
    if (rect == null) {
        double[] roiArray = { 0, 0, cameraImage.cols(), (cameraImage.rows() / 3) * 2 };
        this.ROI = new Rect(roiArray);
        yuvBuffer = cameraImage;//from  www  .  j  a  v  a 2 s .co m
        currentBuffer = yuvBuffer;
    } else {
        if (rect.height == (cameraImage.rows() / 3) * 2) {
            Log.i(this.getClass().getSimpleName(), "rect.height == camera image height (simple case)");

            double[] rectArray = { rect.x, rect.y, rect.width, rect.height + rect.height / 2 };
            yuvBuffer = cameraImage.submat(new Rect(rectArray));
        } else {
            Log.i(this.getClass().getSimpleName(), "rect.height != camera image height (complicated case)");
            // TODO
            throw new UnsupportedOperationException();
        }
    }
}

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