Java Utils.bitmapToMat方法代碼示例

import org.opencv.android.Utils; //導入方法依賴的package包/類
private Mat bytesToMat(byte[] data) {
    // Scale down the image for performance
    Bitmap bmp = BitmapFactory.decodeByteArray(data, 0, data.length);
    int targetWidth = 1200;
    if (bmp.getWidth() > targetWidth) {
        float scaleDownFactor = (float)targetWidth / bmp.getWidth();
        bmp = Bitmap.createScaledBitmap(bmp,
                (int)(bmp.getWidth()*scaleDownFactor),
                (int)(bmp.getHeight()*scaleDownFactor),
                true);
    }
    Mat BGRImage = new Mat (bmp.getWidth(), bmp.getHeight(), CvType.CV_8UC3);
    Utils.bitmapToMat(bmp, BGRImage);

    return BGRImage;
}
 

import org.opencv.android.Utils; //導入方法依賴的package包/類
@Override
public void onPictureTaken(byte[] data, Camera camera) {
    Log.i(TAG, "Saving a bitmap to file");
    // The camera preview was automatically stopped. Start it again.
    mCamera.startPreview();
    mCamera.setPreviewCallback(this);

    // Write the image in a file (in jpeg format)
    try {
        /*FileOutputStream fos = new FileOutputStream(mPictureFileName);

        fos.write(data);
        fos.close();*/

        Bitmap bmp = BitmapFactory.decodeByteArray(data , 0, data.length);
        Mat orig = new Mat(bmp.getHeight(),bmp.getWidth(),CvType.CV_8UC3);
        Bitmap myBitmap32 = bmp.copy(Bitmap.Config.ARGB_8888, true);
        Utils.bitmapToMat(myBitmap32, orig);
        mImage = new Mat();
        Imgproc.cvtColor(orig,mImage,Imgproc.COLOR_RGB2GRAY);
        /*Imgproc.cvtColor(orig, orig, Imgproc.COLOR_BGR2RGB,4);
        Mat frame = new Mat(mFrameHeight+mFrameHeight/2,mFrameWidth, CvType.CV_8UC1);
        frame.put(0,0,data);
        //Imgcodecs.imdecode(frame,0);
        Imgproc.cvtColor(frame,mImage,Imgproc.COLOR_YUV2RGBA_NV21);//frame.submat(0, mFrameHeight, 0, mFrameWidth);*/

    } catch (Exception e) {
        Log.e("PictureDemo", "Exception in photoCallback", e);
    }

}
 

import org.opencv.android.Utils; //導入方法依賴的package包/類
private float[] getInputDataLeNet(Bitmap bitmap) {
    final int INPUT_LENGTH = 28;

    Mat imageMat = new Mat();
    Mat inputMat = new Mat();

    Utils.bitmapToMat(bitmap, imageMat);

    // convert the image to 28 * 28, grayscale, 0~1, and smaller means whiter
    Imgproc.cvtColor(imageMat, imageMat, Imgproc.COLOR_RGBA2GRAY);
    imageMat = centerCropAndScale(imageMat, INPUT_LENGTH);
    imageMat.convertTo(imageMat, CvType.CV_32F, 1. / 255);
    Core.subtract(Mat.ones(imageMat.size(), CvType.CV_32F), imageMat, inputMat);

    float[] inputData = new float[inputMat.width() * inputMat.height()];

    inputMat.get(0, 0, inputData);

    return inputData;
}
 

import org.opencv.android.Utils; //導入方法依賴的package包/類
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent imageReturnedIntent) {
    super.onActivityResult(requestCode, resultCode, imageReturnedIntent);

    switch(requestCode) {
        case SELECT_PHOTO:
            if(resultCode == RESULT_OK){
                try {
                    final Uri imageUri = imageReturnedIntent.getData();
                    final InputStream imageStream = getContentResolver().openInputStream(imageUri);
                    final Bitmap selectedImage = BitmapFactory.decodeStream(imageStream);
                    src = new Mat(selectedImage.getHeight(), selectedImage.getWidth(), CvType.CV_8UC4);
                    Utils.bitmapToMat(selectedImage, src);
                    srcSelected = true;
                    bGaussianPyrUp.setEnabled(true);
                    bGaussianPyrDown.setEnabled(true);
                    bLaplacianPyr.setEnabled(true);
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                }
            }
            break;
    }
}
 

import org.opencv.android.Utils; //導入方法依賴的package包/類
/**
 * This method is called when the camera view is started. It will allocate and initialize
 * some global resources.
 *
 * @param width specifies the width of the camera view.
 * @param height specifies the height of the camera view.
 */
@Override
public void onCameraViewStarted(int width, int height)
{
    faceRects = new MatOfRect();
    totalProcessingTime = 0;
    framesProcessed = 0;

    overlayImage = new Mat();
    Bitmap overlayBitmap =
            BitmapFactory.decodeResource(activity.getResources(), R.drawable.mustache);
    Utils.bitmapToMat(overlayBitmap, overlayImage);
    //
    // Don't allow overlay unless overlay image has the rgba channels.
    //
    if (overlayImage.channels() < 4) doOverlayImage = false;
}
 

import org.opencv.android.Utils; //導入方法依賴的package包/類
private void detectLight(Bitmap bitmap, double gaussianBlurValue) {
    Mat rgba = new Mat();
    Utils.bitmapToMat(bitmap, rgba);

    Mat grayScaleGaussianBlur = new Mat();
    Imgproc.cvtColor(rgba, grayScaleGaussianBlur, Imgproc.COLOR_BGR2GRAY);
    Imgproc.GaussianBlur(grayScaleGaussianBlur, grayScaleGaussianBlur, new Size(gaussianBlurValue, gaussianBlurValue), 0);

    Core.MinMaxLocResult minMaxLocResultBlur = Core.minMaxLoc(grayScaleGaussianBlur);
    Imgproc.circle(rgba, minMaxLocResultBlur.maxLoc, 30, new Scalar(255), 3);

    // Don't do that at home or work it's for visualization purpose.
    Bitmap resultBitmap = Bitmap.createBitmap(rgba.cols(), rgba.rows(), Bitmap.Config.ARGB_8888);
    Utils.matToBitmap(rgba, resultBitmap);
    BitmapHelper.showBitmap(this, resultBitmap, detectLightImageView);

    Bitmap blurryBitmap = Bitmap.createBitmap(grayScaleGaussianBlur.cols(), grayScaleGaussianBlur.rows(), Bitmap.Config.ARGB_8888);
    Utils.matToBitmap(grayScaleGaussianBlur, blurryBitmap);
    BitmapHelper.showBitmap(this, blurryBitmap, gaussianBlurImageView);

}
 

import org.opencv.android.Utils; //導入方法依賴的package包/類
Document detectDocument(Frame frame){
    Size imageSize = new Size(frame.getMetadata().getWidth(), frame.getMetadata().getHeight());
    Mat src = new Mat();
    Utils.bitmapToMat(frame.getBitmap(), src);
    List<MatOfPoint> contours = CVProcessor.findContours(src);
    src.release();

    if(!contours.isEmpty()){
        CVProcessor.Quadrilateral quad = CVProcessor.getQuadrilateral(contours, imageSize);

        if(quad != null){
            quad.points = CVProcessor.getUpscaledPoints(quad.points, CVProcessor.getScaleRatio(imageSize));
            return new Document(frame, quad);
        }
    }

    return null;
}
 

import org.opencv.android.Utils; //導入方法依賴的package包/類
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if(requestCode == REQ_PICK_IMAGE && resultCode == RESULT_OK && data != null){
        try {
            Bitmap image = BitmapFactory.decodeStream(getContentResolver().openInputStream(data.getData()));
            if(mData != null){
                mData.release();
                mData = null;
            }
            mData = new Mat();
            Utils.bitmapToMat(image, mData);
            image.recycle();

            startTests();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }
}
 

import org.opencv.android.Utils; //導入方法依賴的package包/類
@Test
public void object_to_left() {
    Assert.assertTrue(true);
    ExtractPath mExtractPath = new ExtractPath();

    Path myPath = new Path();
    Bitmap bmp = null;

    Mat currFrame = new Mat();
    Utils.bitmapToMat(bmp,currFrame);

    Mat prevFrame = new Mat();
    Utils.bitmapToMat(bmp,currFrame);
    Assert.assertEquals(currFrame, prevFrame);
    Assert.assertSame(currFrame, mExtractPath.withRigidTransformation(currFrame, prevFrame, myPath));

}
 

import org.opencv.android.Utils; //導入方法依賴的package包/類
/**
 * Draws the outline of the Pattern to the preview screen.
 */
public void drawTemplateOutline() {
	//Load the template outline 
	cardType = DataHolder.getInstance().getData();
	if(!cardType.equals("-DETECT-")) getTemplate();
	Bitmap icon = BitmapFactory.decodeResource(this.getResources(),
			R.drawable.card_frame);
	Mat outline = new Mat ( icon.getHeight(), icon.getWidth(), CvType.CV_8U, new Scalar(0, 0, 0));
	Utils.bitmapToMat(icon, outline);
	Imgproc.cvtColor(outline, outline, Imgproc.COLOR_BGRA2RGBA);
	if(showOutline) {
		for (String key : card.getPatternMap().keySet()) {
			if(card.getPattern(key).getResource().matches("[t][e][x][t].*")) Core.rectangle(outline, new Point(Math.abs(outline.cols() - (card.getPattern(key).getTl().y * outline.cols())), card.getPattern(key).getTl().x * outline.rows()),new Point(Math.abs(outline.cols() - (card.getPattern(key).getBr().y * outline.cols())), card.getPattern(key).getBr().x * outline.rows()), new Scalar(0, 255, 0, 255), 1);
			//Core.rectangle(outline, new Point(Math.abs(outline.cols() - (card.getPattern(key).getTl().y * outline.cols())), card.getPattern(key).getTl().x * outline.rows()),new Point(Math.abs(outline.cols() - (card.getPattern(key).getBr().y * outline.cols())), card.getPattern(key).getBr().x * outline.rows()), new Scalar(255, 0, 0, 0), 1);
		}
		Core.rectangle(outline, new Point(Math.abs(outline.cols() - (facetl.y * outline.cols())), facetl.x * outline.rows()),new Point(Math.abs(outline.cols() - (facebr.y * outline.cols())),facebr.x * outline.rows()), new Scalar(0, 255, 0, 255), 1);
	}
	Bitmap bimage = Bitmap.createBitmap(outline.cols(),  outline.rows(),Bitmap.Config.ARGB_8888);
	Imgproc.cvtColor(outline, outline, Imgproc.COLOR_RGBA2BGRA);
	Utils.matToBitmap(outline, bimage);
	ImageView imgV = (ImageView )findViewById(R.id.frame_det);
	imgV.setImageBitmap(bimage);
}
 

import org.opencv.android.Utils; //導入方法依賴的package包/類
/**
 * Read frame and create a bundle
 * 
 * @return Frame Bundle
 */
@Override
public Bundle read() throws IOException {
	// obtaining a camera image (pixel data are stored in an array in JNI).
	if (cameraExists) {
		processCamera();
		// camera image to bmp
		pixeltobmp(bmp);

		Mat mat = new Mat();
		Utils.bitmapToMat(bmp, mat);

		Bundle bundle = new Bundle();
		Log.i(TAG, "Usb camera got new frame " + cameraId
				+ "Could not open");
		bundle.put(Constants.SOURCE_MAT_RGB, mat);
		bundle.put(Constants.SOURCE_BITMAP, bmp);
		return bundle;
	}
	throw new IOException("Usb camera is not open. Could not read frame");
}
 

import org.opencv.android.Utils; //導入方法依賴的package包/類
private void convertGray() {
    Mat src = new Mat();
    Mat temp = new Mat();
    Mat dst = new Mat();
    Utils.bitmapToMat(selectbp, src);
    Imgproc.cvtColor(src, temp, Imgproc.COLOR_BGRA2BGR);
    Log.i("CV", "image type:" + (temp.type() == CvType.CV_8UC3));
    Imgproc.cvtColor(temp, dst, Imgproc.COLOR_BGR2GRAY);
    Utils.matToBitmap(dst, selectbp);
    myImageView.setImageBitmap(selectbp);
}
 

import org.opencv.android.Utils; //導入方法依賴的package包/類
public void setInputImage(Bitmap bitmap, boolean isPano) {

        if (bitmap == null)
            return;

        mIsFaded = !isPano;
        mIsImageLoaded = true;
        mInputImage = new Mat();

//        Check if the bitmap has the correct type for the OpenCV bitmapToMat function:
        if (bitmap.getConfig() != null) { // bitmap.getConfig() just returns a valid value if the format is in one of the public formats.
            if (bitmap.getConfig() != Bitmap.Config.ARGB_8888 && bitmap.getConfig() != Bitmap.Config.RGB_565)
                bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, false);
        }
        else
            bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, false);

        Utils.bitmapToMat(bitmap, mInputImage);

        mOriginalImage = mInputImage.clone();

        mFullOutputSize = Math.max(mInputImage.width(), mInputImage.height());

        if (mFullOutputSize > MainActivity.MAX_IMG_SIZE)
            mFullOutputSize = MainActivity.MAX_IMG_SIZE;

        initImages();

    }
 

import org.opencv.android.Utils; //導入方法依賴的package包/類
/**
 * This method gets a frame from the frame queue and returns the image that matches the format specified by the
 * configVideoSource method.
 *
 * @param frame specifies the frame object to hold image.
 * @return true if success, false otherwise.
 */
@Override
public boolean getFrame(Mat frame)
{
    boolean success = false;

    try
    {
        VuforiaLocalizer.CloseableFrame closeableFrame = localizer.getFrameQueue().take();

        for (int i = 0; i < closeableFrame.getNumImages(); i++)
        {
            Image image = closeableFrame.getImage(i);
            if (image.getWidth() == imageWidth && image.getHeight() == imageHeight &&
                    image.getFormat() == PIXEL_FORMAT.RGB565)
            {
                Bitmap bm = Bitmap.createBitmap(image.getWidth(), image.getHeight(), Bitmap.Config.RGB_565);
                bm.copyPixelsFromBuffer(image.getPixels());
                Utils.bitmapToMat(bm, frame);
                break;
            }
        }

        closeableFrame.close();
        success = true;
    }
    catch (InterruptedException e)
    {
        e.printStackTrace();
    }

    return success;
}
 

import org.opencv.android.Utils; //導入方法依賴的package包/類
private void initAnalysisVideo(String mChosenFile) {
    try {
        if (!carregandoVideo) {
            carregandoVideo = true;

            File videoFile = new File(mChosenFile);
            Uri videoFileUri = Uri.parse(videoFile.toString());

            MediaMetadataRetriever retriever = new MediaMetadataRetriever();
            FileInputStream inputStream = new FileInputStream(videoFile.getAbsolutePath());
            retriever.setDataSource(inputStream.getFD());
            //Create a new Media Player
            ProgressDialog pd = new ProgressDialog(activity);
            pd.setMessage("aguarde!");
            pd.show();
            MediaPlayer mp = MediaPlayer.create(activity, videoFileUri);
            int millis = mp.getDuration();

            for (int i = 0; i < millis; i += 100) {
                Bitmap bitmap = retriever.getFrameAtTime(i * 1000, MediaMetadataRetriever.OPTION_CLOSEST);
                Mat mat = new Mat();
                Utils.bitmapToMat(bitmap, mat);
                Utils.matToBitmap(faceDetectController.detectface(mat), bitmap);

                framePackage.addImage(Bitmap.createScaledBitmap(bitmap, bitmap.getWidth() / 3, bitmap.getHeight() / 3, false));
            }

            new MyVideoProgressBar(activity, framePackage, Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM) + "/out.mp4", "MOBILE").execute();
            pd.dismiss();

        }
    } catch (Exception e) {
        e.printStackTrace();
    }

}