import java.awt.Color;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.awt.image.RescaleOp;
import java.io.IOException;
import javax.media.jai.JAI;
import javax.media.jai.PlanarImage;
import javax.swing.*;
public class FinalHistogram extends JPanel {
int[] bins = new int[256];
FinalHistogram(int[] pbins) {
bins = pbins;
repaint();
}
@Override
protected void paintComponent(Graphics g) {
//g.drawLine();
for (int i = 0; i < 256; i++) {
System.out.println("bin[" + i + "]===" + bins[i]);
g.drawLine(200 + i, 300, 200 + i, 300 - (bins[i])/1000);
//g.drawLine(200 + i, 200, 200 + i, 200-(bins[i])/1500);
// System.out.println("bin["+i+"]==="+bins[i]);
}
}
public static void main(String[] args) throws IOException {
JFrame frame = new JFrame();
frame.setSize(500, 500);
int[] pbins = new int[256];
int[] sbins = new int[256];
PlanarImage image = JAI.create("fileload", "image12.tiff");
BufferedImage bi = image.getAsBufferedImage();
System.out.println("tipe is " + bi.getType());
int[] pixel = new int[3];
int k = 0;
Color c = new Color(k);
Double d = 0.0;
Double d1;
for (int x = 0; x < bi.getWidth(); x++) {
for (int y = 0; y < bi.getHeight(); y++) {
pixel = bi.getRaster().getPixel(x, y, new int[3]);
d=(0.2125*pixel[0])+(0.7154*pixel[1])+(0.072*pixel[2]);
k=(int) (d/256);
sbins[k]++;
}
}
System.out.println("copleted" + d + "--" + k);
JTabbedPane jtp=new JTabbedPane();
ImageIcon im= new ImageIcon(bi);
//jtp.add("New image", new JLabel((im)));
jtp.addTab("Histogram",new FinalHistogram(sbins));
frame.add(jtp);
frame.setVisible(true);
frame.setDefaultCloSEOperation(JFrame.DISPOSE_ON_CLOSE);
}
}
如何使用RGB像素值绘制直方图?
如何使用RGB像素值绘制直方图?
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