1 | initial version |
You can use the next code to transform a cvMat element into a java element: BufferedImage or Image:
public BufferedImage Mat2BufferedImage(Mat m){
// source: http://answers.opencv.org/question/10344/opencv-java-load-image-to-gui/
// Fastest code
// The output can be assigned either to a BufferedImage or to an Image
int type = BufferedImage.TYPE_BYTE_GRAY;
if ( m.channels() > 1 ) {
type = BufferedImage.TYPE_3BYTE_BGR;
}
int bufferSize = m.channels()*m.cols()*m.rows();
byte [] b = new byte[bufferSize];
m.get(0,0,b); // get all the pixels
BufferedImage image = new BufferedImage(m.cols(),m.rows(), type);
final byte[] targetPixels = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
System.arraycopy(b, 0, targetPixels, 0, b.length);
return image;
}
And then display it with:
public void displayImage(Image img2)
{
//BufferedImage img=ImageIO.read(new File("/home/rafauv/Dropbox/UNIVALLE/TG/0_Thermography_3D/Codigos/HelloOpenCV/lena.png"));
ImageIcon icon=new ImageIcon(img2);
JFrame frame=new JFrame();
frame.setLayout(new FlowLayout());
frame.setSize(img2.getWidth(null)+50, img2.getHeight(null)+50);
JLabel lbl=new JLabel();
lbl.setIcon(icon);
frame.add(lbl);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
2 | No.2 Revision |
You can use the next code to transform a cvMat element into a java element: BufferedImage or Image:
public BufferedImage Mat2BufferedImage(Mat m){
// source: http://answers.opencv.org/question/10344/opencv-java-load-image-to-gui/
// Fastest code
// The output can be assigned either to a BufferedImage or to an Image
int type = BufferedImage.TYPE_BYTE_GRAY;
if ( m.channels() > 1 ) {
type = BufferedImage.TYPE_3BYTE_BGR;
}
int bufferSize = m.channels()*m.cols()*m.rows();
byte [] b = new byte[bufferSize];
m.get(0,0,b); // get all the pixels
BufferedImage image = new BufferedImage(m.cols(),m.rows(), type);
final byte[] targetPixels = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
System.arraycopy(b, 0, targetPixels, 0, b.length);
return image;
}
And then display it with:
public void displayImage(Image img2)
{
//BufferedImage img=ImageIO.read(new File("/home/rafauv/Dropbox/UNIVALLE/TG/0_Thermography_3D/Codigos/HelloOpenCV/lena.png"));
File("/HelloOpenCV/lena.png"));
ImageIcon icon=new ImageIcon(img2);
JFrame frame=new JFrame();
frame.setLayout(new FlowLayout());
frame.setSize(img2.getWidth(null)+50, img2.getHeight(null)+50);
JLabel lbl=new JLabel();
lbl.setIcon(icon);
frame.add(lbl);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}