基于java的图像分割（数字图像处理）

package ImageProcess; import java.awt.*; import java.awt.event.*; import java.awt.image.*; import java.io.File; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; import javax.imageio.ImageIO; import javax.swing.*; import javax.swing.filechooser.FileSystemView; import ImageProcess.histshow; public class ImageProc extends Frame { Image im,tmp,img; Graphics g2; int iw,ih; int[] pixels; boolean flag_load=false; boolean flag_grey=false; String fileopen = null, filename = null; //构造方法 public ImageProc(){ this.setTitle("图像分割系统"); Panel pdown; Button load,grey,run,original,Rpbert_Run,save,quit,hist; //添加窗口监听事件 addWindowListener(new WindowAdapter(){ public void windowClosing(WindowEvent e){ System.exit(0); } }); pdown=new Panel(); pdown.setBackground(Color.lightGray); load=new Button("打开图像"); hist=new Button("直方图"); grey = new Button("灰度图像"); save=new Button("保存灰度图像"); original= new Button("原图"); run=new Button("全局阈值分割"); Rpbert_Run=new Button("Roberts边缘分割"); quit=new Button("退出"); this.add(pdown,BorderLayout.SOUTH); pdown.add(load); pdown.add(grey); pdown.add(save); pdown.add(original); pdown.add(run); pdown.add(Rpbert_Run); pdown.add(original); pdown.add(hist); pdown.add(quit); //按钮的监听事件 load.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { try { jLoad_ActionPerformed(e); } catch (IOException e1) { e1.printStackTrace(); } } }); hist.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { try { jHist_ActionPerformed(e); } catch (IOException e1) { e1.printStackTrace(); } } }); grey.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { try { jGrey_ActionPerformed(e); } catch (IOException e1) { e1.printStackTrace(); } } }); original.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub try { jOriginal_ActionPerformed(e); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } }); run.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { jRun_ActionPerformed(e); } }); Rpbert_Run.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { jRpbert_Run_ActionPerformed(e); } }); save.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { try { jSave_ActionPerformed(e); } catch (IOException e1) { e1.printStackTrace(); } } }); quit.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { jQuit_ActionPerformed(e); } }); } public void jHist_ActionPerformed(ActionEvent e) throws IOException{ histshow h = new histshow(); h.getData(pixels, iw, ih); h.setSize(480,350); h.setVisible(true); } public void jLoad_ActionPerformed(ActionEvent e) throws IOException{ FileDialog filedialog_open; filedialog_open = new FileDialog(this, "打开文件对话框", FileDialog.LOAD); filedialog_open.setFile("*.jpg"); filedialog_open.setVisible(true); fileopen = filedialog_open.getDirectory();// 返回文件对话框中显示的文件所属的目录 filename = filedialog_open.getFile();// 返回当前文件对话框中显示的文件名的字符串表 File inputFile = new File(fileopen+filename); BufferedImage input = ImageIO.read(inputFile); //BufferedImage input1 = ImageIO.read(inputFile); //img=input1; im = input; iw=im.getWidth(this); ih=im.getHeight(this); pixels=new int[iw*ih]; try { PixelGrabber pg=new PixelGrabber(im, 0, 0, iw, ih, pixels, 0, iw); pg.grabPixels(); } catch (InterruptedException e3) { e3.printStackTrace(); } //ImageProducer ip=new MemoryImageSource(iw, ih, pixels, 0, iw); tmp=input; //img=input; flag_load=true; repaint(); } public void jGrey_ActionPerformed(ActionEvent e) throws IOException { if(flag_load){ File inputFile = new File(fileopen+filename); BufferedImage input = ImageIO.read(inputFile);//ImageIO类包含一些用来查找 ImageReader 和 ImageWriter 以及执行简单编码和解码的静态便捷方法。 iw = input.getWidth(this); ih = input.getHeight(this); pixels = new int[iw*ih]; BufferedImage grayImage = new BufferedImage(iw, ih, BufferedImage.TYPE_BYTE_GRAY); //表示无符号灰度级图像（无索引） for(int i=0; i<iw; i++){ for(int j=0; j<ih; j++){ int rgb = input.getRGB(i, j); int grey = (int) (0.3*((rgb&0xff0000 )>>16)+0.59*((rgb&0xff00 )>>8)+0.11*((rgb&0xff))); //通过移位方法：Gray =(R*76+G*151+B*28)>>8; rgb = 255<<24|grey<<16|grey<<8|grey; grayImage.setRGB(i, j, rgb); } } tmp = grayImage; try{ PixelGrabber pg = new PixelGrabber(tmp,0,0,iw,ih,pixels,0,iw); pg.grabPixels(); }catch(InterruptedException e3){ e3.printStackTrace(); } flag_grey = true; repaint(); } else{ JOptionPane.showMessageDialog(null, "请先打开一副图片！","提示：", JOptionPane.WARNING_MESSAGE); } } public void jOriginal_ActionPerformed(ActionEvent e) throws IOException { if(flag_load) { File inputFile = new File(fileopen+filename); String pathFile = null; pathFile=fileopen+filename; BufferedImage input = ImageIO.read(inputFile); iw = input.getWidth(this); ih = input.getHeight(this); pixels = new int[iw*ih]; ImageShow h = new ImageShow(); h.getData(pathFile, iw, ih,pixels); h.setSize(480,350); h.setVisible(true); }else{ JOptionPane.showMessageDialog(null, "请先打开一副图片！","提示：", JOptionPane.WARNING_MESSAGE); } } public void jRun_ActionPerformed(ActionEvent e) { if(flag_load){ try { PixelGrabber pg=new PixelGrabber(im, 0, 0, iw, ih, pixels, 0, iw); pg.grabPixels(); } catch (InterruptedException e3) { e3.printStackTrace(); } //设定二值化的阈值，默认值为100 int grey=100; Object tmpGrey="100"; String s=JOptionPane.showInputDialog(null, "输入二值化的阈值(0-255)：", tmpGrey); //还会有异常抛出 if(s!=null){ grey=Integer.parseInt(s); } if(grey>255){ grey=255; }else if(grey<0) { grey=0; } //对图像进行二值化处理。Alpha值保持不变 ColorModel cm=ColorModel.getRGBdefault(); for(int i=0;i<iw*ih;i++) { int red,green,blue; int alpha=cm.getAlpha(pixels[i]); if(cm.getRed(pixels[i])>grey) { red=255; }else{red=0;} if(cm.getGreen(pixels[i])>grey) { green=255; }else{green=0;} if(cm.getBlue(pixels[i])>grey) { blue=255; }else{blue=0;} pixels[i]=alpha<<24|red<<16|green<<8|blue; //通过移位重新构成某一点像素的 RGB 值 /* * 返回 （（alpha左移24位） 或（red左移16位） 或 （green左移8位） 或 （ blue））返回值是一个数值. <<表示左移, 左移一位表示原来的值乘2. | ：当两边操作数的位有一边为1时，结果为1，否则为0。如1100|1010=1110 　　 * * * 像素是个24位的真彩色，最高8位复制alpha，下来8位赋值red，等等。最低的8位是blue颜色通道 * * */ } //将数组中的像素产生一个图像 /* * ImageProducer * 可为 Image 生