Goal
Test OpenCV affine.OpenCV_WarpAffine.java
import org.opencv.core.Core;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.core.MatOfPoint2f;
import org.opencv.core.Point;
import org.opencv.imgcodecs.Imgcodecs;
import org.opencv.imgproc.Imgproc;
import javax.swing.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*;
import java.awt.image.BufferedImage;
public class OpenCV_WarpAffine {
static {System.loadLibrary(Core.NATIVE_LIBRARY_NAME);}
private JFrame frmjavaSwing;
double alpha =2;
double beta =50;
/**
* Launch the application.
*/
public static void main(String[] args){
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try{
OpenCV_WarpAffine window = new OpenCV_WarpAffine();
window.frmjavaSwing.setVisible(true);
}catch (Exception e){
e.printStackTrace();
}
}
});
}
public OpenCV_WarpAffine(){
init();
}
/**
* Init the contents of the frame.
*/
private void init(){
final Mat src = Imgcodecs.imread(
"D:\\projects\\Java\\OpenCV_Samples\\resource\\imgs\\clean.jpg");
BufferedImage image = matToBufferedImage(src);
frmjavaSwing = new JFrame();
frmjavaSwing.setTitle("OpenCV 影像扭曲練習");
frmjavaSwing.setBounds(100, 100, 520, 550);
frmjavaSwing.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frmjavaSwing.getContentPane().setLayout(null);
final JLabel showDot1Value = new JLabel("0.1");
showDot1Value.setBounds(210, 10, 27, 15);
frmjavaSwing.getContentPane().add(showDot1Value);
final JLabel showDot2Value = new JLabel("0.1");
showDot2Value.setBounds(210, 35, 27, 15);
frmjavaSwing.getContentPane().add(showDot2Value);
final JLabel lblNewLabel = new JLabel("");
lblNewLabel.setBounds(10, 91, 438, 467);
lblNewLabel.setIcon(new ImageIcon(image));
frmjavaSwing.getContentPane().add(lblNewLabel);
final JSlider slider_Dot2 = new JSlider();
slider_Dot2.setMaximum(10);
slider_Dot2.setValue(0);
slider_Dot2.setBounds(47, 33, 162, 25);
frmjavaSwing.getContentPane().add(slider_Dot2);
final JSlider slider_Dot3 = new JSlider();
slider_Dot3.setMaximum(10);
slider_Dot3.setValue(0);
slider_Dot3.setBounds(47, 56, 162, 25);
frmjavaSwing.getContentPane().add(slider_Dot3);
final JSlider slider_Dot1 = new JSlider();
slider_Dot1.setMaximum(10);
slider_Dot1.setValue(0);
slider_Dot1.setBounds(47, 10, 162, 25);
frmjavaSwing.getContentPane().add(slider_Dot1);
JLabel lblAlpha = new JLabel("var1");
lblAlpha.setBounds(10, 20, 46, 15);
frmjavaSwing.getContentPane().add(lblAlpha);
JLabel lblBeta = new JLabel("var2");
lblBeta.setBounds(10, 45, 46, 15);
frmjavaSwing.getContentPane().add(lblBeta);
JLabel lblDot = new JLabel("var3");
lblDot.setBounds(10, 68, 27, 15);
frmjavaSwing.getContentPane().add(lblDot);
final JLabel showDot3Value = new JLabel("0.1");
showDot3Value.setBounds(210, 60, 25, 15);
frmjavaSwing.getContentPane().add(showDot3Value);
JLabel lblVar_2 = new JLabel("var6");
lblVar_2.setBounds(234, 66, 32, 15);
frmjavaSwing.getContentPane().add(lblVar_2);
JLabel lblVar_1 = new JLabel("var5");
lblVar_1.setBounds(234, 43, 32, 15);
frmjavaSwing.getContentPane().add(lblVar_1);
JLabel lblVar = new JLabel("var4");
lblVar.setBounds(234, 18, 32, 15);
frmjavaSwing.getContentPane().add(lblVar);
final JSlider slider_Dot4 = new JSlider();
slider_Dot4.setMaximum(10);
slider_Dot4.setValue(0);
slider_Dot4.setBounds(265, 10, 162, 25);
frmjavaSwing.getContentPane().add(slider_Dot4);
final JSlider slider_Dot5 = new JSlider();
slider_Dot5.setMaximum(10);
slider_Dot5.setValue(0);
slider_Dot5.setBounds(265, 35, 162, 25);
frmjavaSwing.getContentPane().add(slider_Dot5);
final JSlider slider_Dot6 = new JSlider();
slider_Dot6.setMaximum(10);
slider_Dot6.setValue(0);
slider_Dot6.setBounds(265, 56, 162, 25);
frmjavaSwing.getContentPane().add(slider_Dot6);
final JLabel showDot4Value = new JLabel("0.1");
showDot4Value.setBounds(437, 10, 27, 15);
frmjavaSwing.getContentPane().add(showDot4Value);
final JLabel showDot5Value = new JLabel("0.1");
showDot5Value.setBounds(437, 35, 27, 15);
frmjavaSwing.getContentPane().add(showDot5Value);
final JLabel showDot6Value = new JLabel("0.1");
showDot6Value.setBounds(437, 56, 27, 15);
frmjavaSwing.getContentPane().add(showDot6Value);
slider_Dot1.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent arg0) {
//System.out.println(slider_alpha.getValue());
showDot1Value.setText((float)slider_Dot1.getValue()/10+"");
BufferedImage newImage=matToBufferedImage(wrap(src,slider_Dot1.getValue(),(float)slider_Dot2.getValue()/10,(float)slider_Dot3.getValue()/10,(float)slider_Dot4.getValue()/10,(float)slider_Dot5.getValue()/10,(float)slider_Dot6.getValue()/10));
lblNewLabel.setIcon(new ImageIcon(newImage));
}
});
slider_Dot3.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent arg0) {
showDot3Value.setText((float)slider_Dot3.getValue()/10+"");
BufferedImage newImage=matToBufferedImage(wrap(src,slider_Dot1.getValue(),(float)slider_Dot2.getValue()/10,(float)slider_Dot3.getValue()/10,(float)slider_Dot4.getValue()/10,(float)slider_Dot5.getValue()/10,(float)slider_Dot6.getValue()/10));
lblNewLabel.setIcon(new ImageIcon(newImage));
}
});
slider_Dot2.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent arg0) {
showDot2Value.setText((float)slider_Dot2.getValue()/10+"");
BufferedImage newImage=matToBufferedImage(wrap(src,slider_Dot1.getValue(),(float)slider_Dot2.getValue()/10,(float)slider_Dot3.getValue()/10,(float)slider_Dot4.getValue()/10,(float)slider_Dot5.getValue()/10,(float)slider_Dot6.getValue()/10));
lblNewLabel.setIcon(new ImageIcon(newImage));
}
});
slider_Dot4.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent arg0) {
showDot4Value.setText((float)slider_Dot4.getValue()/10+"");
BufferedImage newImage=matToBufferedImage(wrap(src,slider_Dot1.getValue(),(float)slider_Dot2.getValue()/10,(float)slider_Dot3.getValue()/10,(float)slider_Dot4.getValue()/10,(float)slider_Dot5.getValue()/10,(float)slider_Dot6.getValue()/10));
lblNewLabel.setIcon(new ImageIcon(newImage));
}
});
slider_Dot5.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent arg0) {
showDot5Value.setText((float)slider_Dot5.getValue()/10+"");
BufferedImage newImage=matToBufferedImage(wrap(src,slider_Dot1.getValue(),(float)slider_Dot2.getValue()/10,(float)slider_Dot3.getValue()/10,(float)slider_Dot4.getValue()/10,(float)slider_Dot5.getValue()/10,(float)slider_Dot6.getValue()/10));
lblNewLabel.setIcon(new ImageIcon(newImage));
}
});
slider_Dot6.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent arg0) {
showDot6Value.setText((float)slider_Dot6.getValue()/10+"");
BufferedImage newImage=matToBufferedImage(wrap(src,slider_Dot1.getValue(),(float)slider_Dot2.getValue()/10,(float)slider_Dot3.getValue()/10,(float)slider_Dot4.getValue()/10,(float)slider_Dot5.getValue()/10,(float)slider_Dot6.getValue()/10));
lblNewLabel.setIcon(new ImageIcon(newImage));
}
});
}
public Mat wrap(Mat source,double dot1,double dot2,double dot3,double dot4,double dot5,double dot6){
Mat wrapMat=new Mat(2,3, CvType.CV_32FC1);
Mat destination=new Mat(source.rows(),source.cols(),source.type());
MatOfPoint2f srcTri=new MatOfPoint2f();
MatOfPoint2f dstTri=new MatOfPoint2f();
Point[] srcPoints=new Point[3];
srcPoints[0]=new Point(0,0);
srcPoints[1]=new Point(source.cols()-1,0);
srcPoints[2]=new Point(0,source.rows()-1);
srcTri.fromArray(srcPoints);
Point[] dstPoints=new Point[3];
dstPoints[0]=new Point(source.cols()*dot1,source.rows()*dot2);
dstPoints[1]=new Point(source.cols()*dot3,source.rows()*dot4);
dstPoints[2]=new Point(source.cols()*dot5,source.rows()*dot6);
dstTri.fromArray(dstPoints);
wrapMat=Imgproc.getAffineTransform(srcTri, dstTri);
Imgproc.warpAffine(source, destination, wrapMat, destination.size());
return destination;
}
public BufferedImage matToBufferedImage(Mat matrix) {
int cols = matrix.cols();
int rows = matrix.rows();
int elemSize = (int)matrix.elemSize();
byte[] data = new byte[cols * rows * elemSize];
int type;
matrix.get(0, 0, data);
switch (matrix.channels()) {
case 1:
type = BufferedImage.TYPE_BYTE_GRAY;
break;
case 3:
type = BufferedImage.TYPE_3BYTE_BGR;
// bgr to rgb
byte b;
for(int i=0; i<data.length; i=i+3) {
b = data[i];
data[i] = data[i+2];
data[i+2] = b;
}
break;
default:
return null;
}
BufferedImage image2 = new BufferedImage(cols, rows, type);
image2.getRaster().setDataElements(0, 0, cols, rows, data);
return image2;
}
}