Example usage for org.opencv.android Utils matToBitmap

Introduction

In this page you can find the example usage for org.opencv.android Utils matToBitmap.

Prototype

public static void matToBitmap(Mat mat, Bitmap bmp)

Source Link

Document

Short form of the matToBitmap(mat, bmp, premultiplyAlpha=false)

Usage

From source file:ve.ucv.ciens.ccg.nxtar.MainActivity.java

License:Apache License

@Override
public CalibrationData findCalibrationPattern(byte[] frame) {
    if (ocvOn) {/*from w w  w.  jav a 2 s. c  om*/
        boolean found;
        float points[] = new float[ProjectConstants.CALIBRATION_PATTERN_POINTS * 2];
        Bitmap tFrame, mFrame;
        Mat inImg = new Mat(), outImg = new Mat();
        CalibrationData data = new CalibrationData();

        // Decode the input frame and convert it to an OpenCV Matrix.
        tFrame = BitmapFactory.decodeByteArray(frame, 0, frame.length);
        Utils.bitmapToMat(tFrame, inImg);

        // Attempt to find the calibration pattern in the input frame.
        found = findCalibrationPattern(inImg.getNativeObjAddr(), outImg.getNativeObjAddr(), points);

        // Encode the output image as a JPEG image.
        mFrame = Bitmap.createBitmap(outImg.cols(), outImg.rows(), Bitmap.Config.RGB_565);
        Utils.matToBitmap(outImg, mFrame);
        mFrame.compress(CompressFormat.JPEG, 100, outputStream);

        // Prepare the output data structure.
        data.outFrame = outputStream.toByteArray();
        data.calibrationPoints = found ? points : null;

        // Clean up memory.
        tFrame.recycle();
        mFrame.recycle();
        outputStream.reset();

        return data;

    } else {
        Gdx.app.debug(TAG, CLASS_NAME + ".findCalibrationPattern(): OpenCV is not ready or failed to load.");
        return null;
    }
}

From source file:ve.ucv.ciens.ccg.nxtar.MainActivity.java

License:Apache License

@Override
public byte[] undistortFrame(byte[] frame) {
    if (ocvOn) {/*from  w w  w. jav a  2 s  .  com*/
        if (cameraCalibrated) {
            byte undistortedFrame[];
            Bitmap tFrame, mFrame;
            Mat inImg = new Mat(), outImg = new Mat();

            // Decode the input frame and convert it to an OpenCV Matrix.
            tFrame = BitmapFactory.decodeByteArray(frame, 0, frame.length);
            Utils.bitmapToMat(tFrame, inImg);

            // Apply the undistort correction to the input frame.
            Imgproc.undistort(inImg, outImg, cameraMatrix, distortionCoeffs);

            // Encode the output image as a JPEG image.
            mFrame = Bitmap.createBitmap(outImg.cols(), outImg.rows(), Bitmap.Config.RGB_565);
            Utils.matToBitmap(outImg, mFrame);
            mFrame.compress(CompressFormat.JPEG, 100, outputStream);

            // Prepare the return frame.
            undistortedFrame = outputStream.toByteArray();

            // Clean up memory.
            tFrame.recycle();
            mFrame.recycle();
            outputStream.reset();

            return undistortedFrame;

        } else {
            Gdx.app.debug(TAG, CLASS_NAME + ".undistortFrame(): Camera has not been calibrated.");
            return null;
        }
    } else {
        Gdx.app.debug(TAG, CLASS_NAME + ".undistortFrame(): OpenCV is not ready or failed to load.");
        return null;
    }
}