Example usage for org.opencv.core Mat get

Introduction

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

Prototype

public int get(int row, int col, double[] data) 

Source Link

Usage

From source file:com.trandi.opentld.tld.Util.java

License:Apache License

static int getInt(final int row, final int col, final Mat mat) {
    if (CvType.CV_32SC1 != mat.type())
        throw new IllegalArgumentException(
                "Expected type is CV_32SC1, we found: " + CvType.typeToString(mat.type()));

    mat.get(row, col, _intBuff1);
    return _intBuff1[0];
}

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From source file:com.trandi.opentld.tld.Util.java

License:Apache License

static float getFloat(final int row, final int col, final Mat mat) {
    if (CvType.CV_32F != mat.type())
        throw new IllegalArgumentException(
                "Expected type is CV_32F, we found: " + CvType.typeToString(mat.type()));

    mat.get(row, col, _floatBuff1);
    return _floatBuff1[0];
}

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From source file:com.trandi.opentld.tld.Util.java

License:Apache License

static double getDouble(final int row, final int col, final Mat mat) {
    if (CvType.CV_64F != mat.type())
        throw new IllegalArgumentException(
                "Expected type is CV_64F, we found: " + CvType.typeToString(mat.type()));

    mat.get(row, col, _doubleBuff1);
    return _doubleBuff1[0];
}

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From source file:com.ttolley.pongbot.controller.CvPanel.java

/**
 * Converts/writes a Mat into a BufferedImage.
 *
 * @param matrix Mat of type CV_8UC3 or CV_8UC1
 * @return BufferedImage of type TYPE_3BYTE_BGR or TYPE_BYTE_GRAY
 *//*from  w ww.  jav a 2 s  .c  o  m*/
public BufferedImage matToBufferedImage(Mat matrix) {
    int cols = matrix.cols();
    int rows = matrix.rows();
    int elemSize = (int) matrix.elemSize();
    byte[] data = new byte[cols * rows * elemSize];
    int type;
    matrix.get(0, 0, data);
    switch (matrix.channels()) {
    case 1:
        type = BufferedImage.TYPE_BYTE_GRAY;
        break;
    case 3:
        type = BufferedImage.TYPE_3BYTE_BGR;
        // bgr to rgb  
        byte b;
        for (int i = 0; i < data.length; i = i + 3) {
            b = data[i];
            data[i] = data[i + 2];
            data[i + 2] = b;
        }
        break;
    default:
        return null;
    }
    BufferedImage image2 = new BufferedImage(cols, rows, type);
    image2.getRaster().setDataElements(0, 0, cols, rows, data);
    return image2;
}

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From source file:com.untref.gui.Editar.java

public static BufferedImage matToBufferedImage(Mat matrix) {
    BufferedImage bimg = new BufferedImage(1, 1, 1);
    if (matrix != null) {
        int cols = matrix.cols();
        int rows = matrix.rows();
        int elemSize = (int) matrix.elemSize();
        byte[] data = new byte[cols * rows * elemSize];
        int type;
        matrix.get(0, 0, data);
        switch (matrix.channels()) {
        case 1:/*from  ww  w.  j  ava2  s  .  c  om*/
            type = BufferedImage.TYPE_BYTE_GRAY;
            break;
        case 3:
            type = BufferedImage.TYPE_3BYTE_BGR;
            // bgr to rgb  
            byte b;
            for (int i = 0; i < data.length; i = i + 3) {
                b = data[i];
                data[i] = data[i + 2];
                data[i + 2] = b;
            }
            break;
        default:
            return null;
        }

        // Reuse existing BufferedImage if possible
        if (bimg == null || bimg.getWidth() != cols || bimg.getHeight() != rows || bimg.getType() != type) {
            bimg = new BufferedImage(cols, rows, type);
        }
        bimg.getRaster().setDataElements(0, 0, cols, rows, data);
    } else { // mat was null
        bimg = null;
    }
    return bimg;
}

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From source file:cv.FaceDetector.java

License:Open Source License

private BufferedImage matToBufferedImage(Mat matImage) {
    BufferedImage image = new BufferedImage(matImage.width(), matImage.height(), BufferedImage.TYPE_3BYTE_BGR);
    WritableRaster raster = image.getRaster();
    DataBufferByte dataBuffer = (DataBufferByte) raster.getDataBuffer();
    byte[] data = dataBuffer.getData();
    matImage.get(0, 0, data);
    return image;
}

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From source file:cv.recon.util.MatFXUtils.java

License:Open Source License

/**
 * Convert from OpenCV Mat to JavaFX WritableImage to be displayed in
 * ImageView./*from www.  j av a  2s .  c  o  m*/
 * @param mat Mat to be converted
 * @param writableImage Optional WritableImage, if non-null, the Mat will be
 * written in this WritableImage
 * @return A WritableImage to be used for JavaFX, return null if already
 * supplied with WritableImage
 */
public static WritableImage toFXImage(Mat mat, WritableImage writableImage) {
    int width = mat.width();
    int height = mat.height();
    int channels = mat.channels();
    byte[] sourcePixels = new byte[width * height * channels];
    mat.get(0, 0, sourcePixels);

    BufferedImage bufferedImage;
    if (mat.channels() > 1) {
        bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
    } else {
        bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_BYTE_GRAY);
    }

    final byte[] targetPixels = ((DataBufferByte) bufferedImage.getRaster().getDataBuffer()).getData();
    System.arraycopy(sourcePixels, 0, targetPixels, 0, sourcePixels.length);

    if (writableImage == null) {
        WritableImage outputImage = SwingFXUtils.toFXImage(bufferedImage, null);
        return outputImage;
    } else {
        SwingFXUtils.toFXImage(bufferedImage, writableImage);
        return null;
    }
}

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From source file:depthDataFromStereoCamsOpenCV.ProcessImages.java

/**
 * Mat2BufferedImage//from  w w  w. j a  va  2  s  . c  o m
 * @param Mat m
 * @return BufferedImage
 */

public static BufferedImage Mat2BufferedImage(Mat m) {
    // source: http://answers.opencv.org/question/10344/opencv-java-load-image-to-gui/
    // Fastest code
    // The output can be assigned either to a BufferedImage or to an Image

    int type = BufferedImage.TYPE_BYTE_GRAY;
    if (m.channels() > 1) {
        type = BufferedImage.TYPE_3BYTE_BGR;
    }
    int bufferSize = m.channels() * m.cols() * m.rows();
    byte[] b = new byte[bufferSize];
    m.get(0, 0, b); // get all the pixels
    BufferedImage image = new BufferedImage(m.cols(), m.rows(), type);
    final byte[] targetPixels = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
    System.arraycopy(b, 0, targetPixels, 0, b.length);
    return image;

}

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From source file:detectiontest.ImageDisplayer.java

public static BufferedImage toBufferedImage(Mat m) {
    int type = BufferedImage.TYPE_BYTE_GRAY;
    if (m.channels() > 1) {
        type = BufferedImage.TYPE_3BYTE_BGR;
    }/*  w w  w . j  a  v a2  s  . c om*/
    int bufferSize = m.channels() * m.cols() * m.rows();
    byte[] b = new byte[bufferSize];
    m.get(0, 0, b); // get all the pixels
    BufferedImage image = new BufferedImage(m.cols(), m.rows(), type);
    final byte[] targetPixels = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
    System.arraycopy(b, 0, targetPixels, 0, b.length);
    return image;
}

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From source file:dfmDrone.examples.fitEllipseExample.java

public static Image toBufferedImage(Mat m) {
    int type = BufferedImage.TYPE_BYTE_GRAY;
    if (m.channels() > 1)
        type = BufferedImage.TYPE_3BYTE_BGR;

    int bufferSize = m.channels() * m.cols() * m.rows();
    byte[] b = new byte[bufferSize];
    m.get(0, 0, b); // get all the pixels
    BufferedImage image = new BufferedImage(m.cols(), m.rows(), type);
    final byte[] targetPixels = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
    System.arraycopy(b, 0, targetPixels, 0, b.length);
    return image;
}

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