terminating async callback----Opencv,java.fx ,调摄像头的看过来

视频流,有问题都来看了,就当是警示自己

千万别加下面这行代码,说三遍
千万别加下面这行代码,说三遍
千万别加下面这行代码,说三遍
 VideoCapture.release()

下面是正确可以运行的代码,少了几个大括号,要用的别忘了加上

System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
VideoCapture capture = new VideoCapture(0);
Mat matrix = new Mat();
Task task = new Task<Void>() {
    @Override
    public Void call() {
        WritableImage WritableImage = null;
        while (true) {
            capture.read(matrix);
            if (capture.isOpened()) {
                if (capture.read(matrix)) {
                    BufferedImage image = new BufferedImage(matrix.width(), matrix.height(), BufferedImage.TYPE_3BYTE_BGR);
                    WritableRaster raster = image.getRaster();
                    DataBufferByte dataBuffer = (DataBufferByte) raster.getDataBuffer();
                    byte[] data = dataBuffer.getData();
                    matrix.get(0, 0, data);
                    WritableImage = SwingFXUtils.toFXImage(image, null);
                    videoPreview.setImage(WritableImage);
                }
            }