Question

我想捕获并显示来自webacam的视频。为了捕获我正在使用this JavaCV code，它提供了 IplImage ，可以转换为 BufferedImage 。如何在JFrame上显示此图像？

注意：我想显示视频而不是单张图像，即图像应该在从网络摄像头捕获时连续更新

Answer 1

使用JavaCV lib可以在不使用IplImages的情况下使用类Graphics在JPanel中绘制BufferedImage。

以下是在JFrame内的JPanel中显示来自网络摄像头的图像的示例。

try {
        OpenCVFrameGrabber camera = new OpenCVFrameGrabber(0);
        OpenCVFrameConverter.ToMat converter = new OpenCVFrameConverter.ToMat();
        Java2DFrameConverter converterBuffered = new Java2DFrameConverter();

        Frame capturedFrame = null;
        Mat matImage = null;
        camera.start();
        while ((capturedFrame = camera.grab()) != null) {
            matImage = converter.convertToMat(capturedFrame);

            BufferedImage bufferedImage = converterBuffered.convert(capturedFrame);

            Graphics g = imageView.getGraphics(); //getting the Graphics Class of the JPanel named as imageView
            g.drawImage(bufferedImage, 10,10, bufferedImage.getWidth(), bufferedImage.getHeight(),imageView); //this imageView is a JPanel component

        }
        camera.stop();

    } catch (FrameGrabber.Exception ex) {
        System.out.println("Fail to capture frame");
        //this catch clause refer to errors on opening the camera or failure on capture of frame.
    }

如何在JFrame上显示视频（捕获为BufferedImage）？

1 个答案: