Java Code Examples for org.opencv.imgcodecs.Imgcodecs#imencode()

The following examples show how to use org.opencv.imgcodecs.Imgcodecs#imencode() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: SXOpenCV.java    From SikuliX1 with MIT License 6 votes vote down vote up 
private static BufferedImage makeBufferedImage(Mat content, String type) {
  if (content.empty()) {
    return null;
  }
  BufferedImage bImg = null;
  MatOfByte bytemat = new MatOfByte();
  Imgcodecs.imencode(type, content, bytemat);
  byte[] bytes = bytemat.toArray();
  InputStream in = new ByteArrayInputStream(bytes);
  try {
    bImg = ImageIO.read(in);
  } catch (IOException ex) {
    Debug.log(-1, "SXOpenCV: makeBufferedImage: %s error(%s)", content, ex.getMessage());
  }
  return bImg;
}
Example 2
Source File: DetectFace.java    From opencv-object-detection with MIT License 6 votes vote down vote up 
private static BufferedImage ConvertMat2Image(Mat kameraVerisi) {

	
	MatOfByte byteMatVerisi = new MatOfByte();
	//Ara belle?e verilen formatta g�r�nt� kodlar
	Imgcodecs.imencode(".jpg", kameraVerisi, byteMatVerisi);
	//Mat nesnesinin toArray() metodu elemanlary byte dizisine �evirir
	byte[] byteArray = byteMatVerisi.toArray();
	BufferedImage goruntu = null;
	try {
		InputStream in = new ByteArrayInputStream(byteArray);
		goruntu = ImageIO.read(in);
	} catch (Exception e) {
		e.printStackTrace();
		return null;
	}
	return goruntu;
}
Example 3
Source File: Element.java    From SikuliNG with MIT License 6 votes vote down vote up 
public static BufferedImage getBufferedImage(Mat mat, String type) {
  BufferedImage bImg = null;
  MatOfByte bytemat = new MatOfByte();
  if (SX.isNull(mat)) {
    mat = getNewMat();
  }
  Imgcodecs.imencode(type, mat, bytemat);
  byte[] bytes = bytemat.toArray();
  InputStream in = new ByteArrayInputStream(bytes);
  try {
    bImg = ImageIO.read(in);
  } catch (IOException ex) {
    log.error("getBufferedImage: %s error(%s)", mat, ex.getMessage());
  }
  return bImg;
}
Example 4
Source File: FaceDetectionController.java    From ExoVisix with MIT License 5 votes vote down vote up 
/**
 * Convert a Mat object (OpenCV) in the corresponding Image for JavaFX
 * 
 * @param frame
 *            the {@link Mat} representing the current frame
 * @return the {@link Image} to show
 */
private Image mat2Image(Mat frame)
{
	// create a temporary buffer
	MatOfByte buffer = new MatOfByte();
	// encode the frame in the buffer, according to the PNG format
	Imgcodecs.imencode(".png", frame, buffer);
	// build and return an Image created from the image encoded in the
	// buffer
	return new Image(new ByteArrayInputStream(buffer.toArray()));
}
Example 5
Source File: FXController.java    From Face-Recognition with Apache License 2.0 5 votes vote down vote up 
/**
 * Convert a Mat object (OpenCV) in the corresponding Image for JavaFX
 * 
 * @param frame
 *            the {@link Mat} representing the current frame
 * @return the {@link Image} to show
 */
private Image mat2Image(Mat frame)
{
	// create a temporary buffer
	MatOfByte buffer = new MatOfByte();
	// encode the frame in the buffer, according to the PNG format
	Imgcodecs.imencode(".png", frame, buffer);
	// build and return an Image created from the image encoded in the
	// buffer
	return new Image(new ByteArrayInputStream(buffer.toArray()));
}
Example 6
Source File: ImageProcessor.java    From video-stream-classification with Apache License 2.0 4 votes vote down vote up 
/**
 * Method to process images
 * 
 * @param camId camera Id
 * @param frames list of VideoEventData
 * @param outputDir directory to save image files
 * @return last processed VideoEventData 
 * @throws Exception
 */
public static VideoEventData process(String camId, Iterator<VideoEventData> frames, String outputDir, VideoEventData previousProcessedEventData) throws Exception {
	VideoEventData currentProcessedEventData = new VideoEventData();
	Mat frame = null;
	double imageWidth = 640;
	double imageHeight = 480;
	Size sz = new Size(imageWidth, imageHeight);
	int frameCount = 0;
	
	//Add frames to list
	ArrayList<VideoEventData> sortedList = new ArrayList<VideoEventData>();
	while(frames.hasNext()){
		sortedList.add(frames.next());
	}
	
	//previous processed frame 
	if (previousProcessedEventData != null) {
		logger.warn("cameraId=" + camId + " previous processed timestamp=" + previousProcessedEventData.getTimestamp());
		sortedList.add(previousProcessedEventData);
	}
	
	//sort frames by timestamp
	sortedList.sort(Comparator.comparing(VideoEventData::getTimestamp));
	logger.warn("cameraId="+camId+" total frames="+sortedList.size());
	
	//iterate and classify every 10th frame
	for (VideoEventData eventData : sortedList) {
		frame = getMat(eventData);
		Imgproc.resize(frame, frame, sz);
		frameCount++;
		if(frameCount == 10){
			MatOfByte bytemat = new MatOfByte();
			Imgcodecs.imencode(".jpg", frame, bytemat);
			byte[] bytes = bytemat.toArray();
			String match = ImageClassifier.classifyImage(bytes);
			logger.info("Best Match "+match);
			saveImageAndData(frame, eventData, match, outputDir);
			frameCount = 0;
		}
			currentProcessedEventData = eventData;
	   }
		return currentProcessedEventData;
	}
Example 7
Source File: OpenCVService.java    From JuniperBot with GNU General Public License v3.0 4 votes vote down vote up 
public static BufferedImage getImage(Mat matrix) throws IOException {
    MatOfByte mob = new MatOfByte();
    Imgcodecs.imencode(".jpg", matrix, mob);
    return ImageIO.read(new ByteArrayInputStream(mob.toArray()));
}
Example 8
Source File: VideoStreamingThread.java    From faceswap with Apache License 2.0 4 votes vote down vote up 
@Override
        protected byte[] doInBackground(Mat... frames) {
            Mat frame=frames[0];
            if (frame_firstUpdateTime == 0) {
                frame_firstUpdateTime = System.currentTimeMillis();
            }
            frame_currentUpdateTime = System.currentTimeMillis();

            long time = System.currentTimeMillis();

            //android compression version
			int datasize = 0;
			byte[] byterray=null;
			if (Const.USE_JPEG_COMPRESSION){
				Bitmap bmp = Bitmap.createBitmap(frame.cols(), frame.rows(),
						Bitmap.Config.ARGB_8888);
				Utils.matToBitmap(frame, bmp);
				ByteArrayOutputStream bos=new ByteArrayOutputStream();
				bmp.compress(Bitmap.CompressFormat.JPEG, 80, bos);
				byterray=bos.toByteArray();
				bmp.recycle();
			} else {
				MatOfByte byteMat = new MatOfByte();
				//changed to rgb so that decoding side is correct
				Imgproc.cvtColor(frame, frame, Imgproc.COLOR_BGRA2RGB);
				Imgcodecs.imencode(".ppm", frame, byteMat);
				Log.d(LOG_TAG, "encoding took " + (System.currentTimeMillis() - time));
				byterray = byteMat.toArray();
			}

            //opencv jpeg compression version
            // before compression: 640 * 480 = 900K, after compression ~300k
//            int datasize = 0;
//            MatOfByte jpgByteMat = new MatOfByte();
//            MatOfInt params = new MatOfInt(Imgcodecs.IMWRITE_JPEG_QUALITY, 80);
//            Imgcodecs.imencode(".jpg", frame, jpgByteMat, params);
//            Log.d(LOG_TAG, "compression imencode took " + (System.currentTimeMillis() - time));
//            Log.d(LOG_TAG, "original size: " + frame.total() * frame.elemSize()
//                    + " after compression " + jpgByteMat.total() * jpgByteMat.elemSize());
//            byte[] byterray = jpgByteMat.toArray();

            //libjpeg-turbo compress
//            int datasize = 0;
//            //native lib use ARGB_8888 format
//            Bitmap bmp = Bitmap.createBitmap(frame.cols(), frame.rows(), Bitmap.Config.ARGB_8888);
//            Utils.matToBitmap(frame, bmp);
//            NativeUtil.compressBitmap(bmp, 95, "/sdcard/tmp/compression_test.jpg", true);
//            Log.d(LOG_TAG, "native compression took " + (System.currentTimeMillis()-time));
//
//            ByteArrayOutputStream bos=new ByteArrayOutputStream();
//            bmp.compress(Bitmap.CompressFormat.JPEG, 70, bos);
//            byte[] byterray=bos.toByteArray();


            synchronized (frameLock) {
                frameBuffer = byterray;
                frameGeneratedTime = System.currentTimeMillis();
                frameID++;
                frameLock.notify();
            }
            Log.d(LOG_TAG, "encoding routine took " + (System.currentTimeMillis()-time));
            return byterray;
        }
Example 9
Source File: CameraStream.java    From tutorials with MIT License 4 votes vote down vote up 
public Image mat2Img(Mat mat) {
    MatOfByte bytes = new MatOfByte();
    Imgcodecs.imencode("img", mat, bytes);
    ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes.toArray());
    Image img = new Image(inputStream); return img;
}
Example 10
Source File: FaceDetection.java    From tutorials with MIT License 4 votes vote down vote up 
public Image mat2Img(Mat mat) {
    MatOfByte bytes = new MatOfByte();
    Imgcodecs.imencode("img", mat, bytes);
    ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes.toArray());
    Image img = new Image(inputStream); return img;
}