我想在图片中嵌入字符串，以下程序实现了在图片中嵌入图片，请问要怎样改？？？
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.io.*;
public class Watermark extends JFrame implements ActionListener
{
Image iImage, oImage;
BufferedImage bImage;
int iw, ih;
int[] pixels,//像素
cphpix; //加密图像数组
boolean loadflag = false,
runflag = false; //图像处理执行标志
String imn, //图像文件名
imh, //加密图像标识"c_"
wtr,
title; //图像标题
ImageWatermark watermark;
RAW reader;
Common common;
public Watermark()
{
setTitle("LSB图像水印");
this.setBackground(Color.lightGray);
//菜单界面
setMenu();
watermark = new ImageWatermark();
reader = new RAW();
common = new Common();
//关闭窗口
closeWin();
setSize(530, 330);
setVisible(true);
}
public void actionPerformed(ActionEvent evt)
{
Graphics graph = getGraphics();
MediaTracker tracker = new MediaTracker(this);
if (evt.getSource() == openItem)
{
//打开要加水印的图片
JFileChooser chooser = new JFileChooser();
common.chooseFile(chooser, "./images/ch15", 0);
int r = chooser.showOpenDialog(null);
if(r == JFileChooser.APPROVE_OPTION)
{
if(runflag)
{
loadflag = false;
runflag = false;
}
if(!loadflag)
{
String name = chooser.getSelectedFile().getAbsolutePath();
//取文件名
String filename = chooser.getSelectedFile().getName();
int len = filename.length();
//取扩展名
String exname = filename.substring(len-3, len);
//取文件名imn
imn = filename.substring(0, len-4);
//取加密标识imh
imh = filename.substring(0, 2);
if(exname.equalsIgnoreCase("raw"))
{
pixels = reader.readRAW1D(name, iw, ih);
ImageProducer ip = new MemoryImageSource(iw, ih,
pixels, 0, iw);
iImage = createImage(ip);
}
else
{
//装载图像
iImage = common.openImage(name, tracker);
//取载入图像的宽和高
iw = iImage.getWidth(null);
ih = iImage.getHeight(null);
repaint();
}
if(!imh.equals("j_")) title = "原图";
else title = "受攻击";
loadflag = true;
}
}
}
//LSB图像水印嵌入
else if(evt.getSource() == wlsbimageItem)
{
if(loadflag)
{
setTitle(" LSB图像水印 ");
//选择水印路径
JOptionPane.showMessageDialog(null, "请选择要嵌入的水印！");
JFileChooser iconfileChooser = new JFileChooser("F:");
int returnVal2 = iconfileChooser.showOpenDialog(iconfileChooser);//打开"打开文件"对话框
String waterpath = iconfileChooser.getSelectedFile().getAbsolutePath();//你选择的文件夹的路径
pixels = common.grabber(common.openImage( waterpath, tracker), iw, ih);
//读入水印图像
int[] water = watermark.readWater(pixels, iw, ih);
pixels = common.grabber(iImage, iw, ih);
System.out.println("水印"+pixels);
//嵌入水印
pixels = watermark.chaosEmbed(pixels, water, iw, ih);
showPix(graph, pixels, iw, ih, "原图", "含水印图");
runflag = true;
//写入.raw含水印文件
reader.writeRAW("./images/ch15/water/w_" + imn +
".raw", pixels, iw, ih);
JOptionPane.showMessageDialog(null, "在目录images/ch15/water,\n"
+ "保存含水印图像w_" + imn+".raw成功!");
}
else
JOptionPane.showMessageDialog(null,"请先打开一幅图!");
}
//LSB图像水印提取
else if(evt.getSource() == dlsbimageItem)
{
//选择要提取水印图片的路径
JOptionPane.showMessageDialog(null, "请选择要提取水印的图片！");
JFileChooser iconfileChooser = new JFileChooser("./images/ch15/water");
int returnVal2 = iconfileChooser.showOpenDialog(iconfileChooser);//打开"打开文件"对话框
String picwaterpath = iconfileChooser.getSelectedFile().getAbsolutePath();//你选择的文件夹的路径
pixels = reader.readRAW1D(picwaterpath, iw, ih);
ImageProducer ip = new MemoryImageSource(iw, ih, pixels, 0, iw);
oImage = createImage(ip);
pixels = common.grabber(oImage, iw, ih);
//提取水印图像
pixels = watermark.getWater(pixels, iw, ih);
showPix(graph, pixels, iw, ih, "原图", "取出水印");
runflag = true;
}
else if (evt.getSource() == exitItem)
System.exit(0);
}
public void paint(Graphics g)
{
if (iImage != null)
{
g.clearRect(0, 0, 530, 350);
g.drawImage(iImage, 5, 50, null);
g.drawString(title, 120, 320);
}
}
public Image showPix(Graphics graph, int[] pixels, int w, int h,
String istr, String ostr)
{
//将数组中的象素产生一个图像
ImageProducer ip = new MemoryImageSource(w, h, pixels, 0, w);
Image oImage = createImage(ip);
common.draw(graph, iImage, istr, oImage, ostr);
runflag = true;
return oImage;
}
public static void main(String[] args)
{
new Watermark();
}
private void closeWin()
{
addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
}
//菜单界面
public void setMenu()
{
Menu fileMenu = new Menu("文件");
openItem = new MenuItem("打开");
openItem.addActionListener(this);
fileMenu.add(openItem);
exitItem = new MenuItem("退出");
exitItem.addActionListener(this);
fileMenu.add(exitItem);
Menu spwaterMenu = new Menu("空域水印");
wlsbimageItem = new MenuItem("LSB图像水印嵌入");
wlsbimageItem.addActionListener(this);
spwaterMenu.add(wlsbimageItem);
dlsbimageItem = new MenuItem("LSB图像水印提取");
dlsbimageItem.addActionListener(this);
spwaterMenu.add(dlsbimageItem);
MenuBar menuBar = new MenuBar();
menuBar.add(fileMenu);
menuBar.add(spwaterMenu);
setMenuBar(menuBar);
}
MenuItem openItem;
MenuItem exitItem;
MenuItem wlsbimageItem; //lsb嵌入图像水印
MenuItem dlsbimageItem; //lsb检测图像水印
}
import java.awt.Image;
import java.io.*;
public class ImageWatermark {
Common common = new Common();
// LSB嵌入水印
public int[] chaosEmbed(int[] pix, int[] water, int iw, int ih) {
for (int i = 0; i < iw * ih; i++) {
int emb;// 含水印灰度
int gray;// 灰度值
// 取（i,j）处的灰度
gray = pix[i] & 0xFF;
if (gray % 2 == 1)
gray = gray - 1;// 最低位清零
emb = gray + water[i];// 最低位嵌入水印
pix[i] = 255 << 24 | emb << 16 << 8 | emb;
}
return pix;
}
// 读入水印图，并转为二值图像矩阵
public int[] readWater(int[] pix, int iw, int ih) {
int gray;// 灰度值
for (int i = 0; i < iw * ih; i++) {
gray = pix[i] & 0xFF;// 取（i,j）处的灰度
if (gray > 128)
pix[i] = 0;// while
else
pix[i] = 1;// black
}
return pix;
}
//提取水印图像
public int[] getWater(int[] pix, int iw, int ih) {
int g;
for (int i = 0; i < iw * ih; i++) {
g = pix[i] & 0xFF;
if (g % 2 == 0)
g = 255;
else
g = 0;
pix[i] = 255 << 24 | g << 16 | g << 8 | g;
}
return pix;
}
// 读入32*32水印图，并转为二值图像矩阵
public int[] readImWater(int[] pix, int iw, int ih) {
int gray;// 灰度值
for (int i = 0; i < iw * ih; i++) {
gray = pix[i] & 0xFF;// 取[i,j]处的灰度
if (gray > 128)
pix[i] = 255;// white
else
pix[i] = 0;// black
}
return pix;
}
}
