調整圖像亮度、對比度、飽和度

完整代碼如下：
1、主要方法編寫類
package chapter4;

import java.awt.image.BufferedImage;

public class BSCAdjustFilter extends AbstractBufferedImageOp {
private double brightness;
private double contrast;
private double saturation;

public double getBrightness() {
    return brightness;
}

public void setBrightness(double brightness) {
    this.brightness = brightness;
}

public double getSaturation() {
    return saturation;
}

public void setSaturation(double saturation) {
    this.saturation = saturation;
}

public double getContrast() {
    return contrast;
}

public void setContrast(double contrast) {
    this.contrast = contrast;
}
public BufferedImage filter(BufferedImage src,BufferedImage dest){
    handleParameters();//調整各系數取值范圍
    int width = src.getWidth();
    int height = src.getHeight();
    if(dest == null){
        dest = creatCompatibleDestImage(src,null);
    }
    int[] inpixels = new int[width*height];
    int[] outpixels = new int[width*height];
    getRGB(src,0,0,width,height,inpixels);

    int index = 0;
    for(int row=0;row<height;row++){
        int ta = 0,tr = 0,tg = 0,tb = 0;
        for(int col=0;col<width;col++){
            index = row*width+col;
            ta = (inpixels[index] >> 24) & 0xff;
            tr = (inpixels[index] >> 16) & 0xff;
            tg = (inpixels[index] >> 8) & 0xff;
            tb = inpixels[index] & 0xff;
            //RGB轉換為HSL色彩空間
            double[] hsl = rgb2Hsl(new int[]{tr,tg,tb});

            //調整飽和度
            hsl[1] = hsl[1]*saturation;
            if(hsl[1]<0.0){
                hsl[1] = 0.0;
            }
            if(hsl[1]>255.0){
                hsl[1] = 255.0;
            }

            //調整亮度
            hsl[2] = hsl[2]*brightness;
            if(hsl[2]<0.0){
                hsl[2] = 0.0;
            }
            if(hsl[2]>255.0){
                hsl[2] = 255.0;
            }
            //HSL轉換為rgb空間
            int[] rgb = hsl2RGB(hsl);
            tr = clamp(rgb[0]);
            tg = clamp(rgb[1]);
            tb = clamp(rgb[2]);

            //調整對比度
            double cr = ((tr/255.0d)-0.5d)*contrast;
            double cg = ((tg/255.0d)-0.5d)*contrast;
            double cb = ((tb/255.0d)-0.5d)*contrast;
            //輸出RGB值
            tr = (int)((cr+0.5f)*255.0f);
            tg = (int)((cg+0.5f)*255.0f);
            tb = (int)((cb+0.5f)*255.0f);

            outpixels[index] = (ta << 24) | (clamp(tr) << 16 ) | (clamp(tg) << 8) | clamp(tb);
        }
    }
    setRGB(dest,0,0,width,height,outpixels);
    return dest;
}
public void handleParameters(){
    contrast = (1.0+contrast/100.0);
    brightness = (1.0 +brightness/100.0);
    saturation = (1.0+saturation/100.0);
}
public int clamp(int value){
    return value>255 ? 255:((value<0) ? 0:value);
}

}
2、抽象類，集成公有類方法
package chapter4;

import java.awt.image.BufferedImage;

/**

• Created by LENOVO on 18-1-29.
  */
  public class AbstractBufferedImageOp {
  public static final double clo60 = 1.0/60.0;
  public static final double clo255 = 1.0/255.0;
  public int tr = 0,tg = 0,tb = 0;

  public AbstractBufferedImageOp(){}
  //讀取像素數據
  public int[] getRGB(BufferedImage image,int x, int y, int width, int height,int[] pixels){
  int type = image.getType();
  if(type == BufferedImage.TYPE_INT_ARGB || type == BufferedImage.TYPE_INT_RGB){
  return (int[]) image.getRaster().getDataElements(x,y,width,height,pixels);
  }else{
  return image.getRGB(x,y,width,height,pixels,0,width);
  }
  }
  //寫入像素數據
  public void setRGB(BufferedImage image,int x, int y, int width, int height, int[] pixels){
  int type = image.getType();
  if(type == BufferedImage.TYPE_INT_ARGB || type == BufferedImage.TYPE_INT_RGB){
  image.getRaster().setDataElements(x,y,width,height,pixels);
  }else {
  image.setRGB(x,y,width,height,pixels,0,width);
  }
  }
  public BufferedImage creatCompatibleDestImage(BufferedImage src,BufferedImage dest){

   return new BufferedImage(src.getWidth(),src.getHeight(),BufferedImage.TYPE_INT_RGB);
  

  }
  //RGB色彩空間轉換為HSL色彩空間
  public double[] rgb2Hsl(int[] hsl){
  double min,max,dif,sum;
  double f1,f2;
  double h,s,l;//HSL色彩空間的三個分量
  double hsl1[]={0.0,0.0,0.0};
  tr = hsl[0];
  tg = hsl[1];
  tb = hsl[2];
  min = tr;
  if(tg<min)
  min = tg;
  if(tb<min)
  min = tb;
  max = tr;
  f1 = 0.0;
  f2 = tg-tb;
  if(tg>max){
  max = tg;
  f1 = 120.0;
  f2 = tb-tr;
  }
  if(tb >max){
  max = tb;
  f1 = 240.0;
  f2 = tr-tg;
  }
  dif = max-min;
  sum = max+min;
  l =0.5sum;//亮度僅與圖像的最多顏色成分和最少的顏色成分的總量有關。亮度越小，圖像越趨於黑色。亮度越高圖像越趨於明亮的白色。
  if(dif == 0){//最大值與最小值相同，則表示為灰色，那么s定義為0，h未定義通常也寫為0
  h = 0.0;
  s = 0.0;
  } else if(l<127.5){//根據亮度l計算飽和度
  s = 255.0dif/sum;
  } else{
  s = 255.0dif/(510.0-sum);
  }
  h = (f1 +60.0f2)/dif;//計算色調h
  if(h<0.0){
  h+=360.0;
  }
  if(h>360.0){
  h-=360.0;
  }
  hsl1[0] = h;
  hsl1[1] = s;
  hsl1[2] = l;
  return hsl1;
  }
  //HSL色彩空間轉換為RGB色彩空間
  public int[] hsl2RGB(double[] hsl){
  double h,s,l;//HSL色彩空間的三個分量
  h = hsl[0];
  s = hsl[1];
  l = hsl[2];
  int[] rgb1={0,0,0};//RGB數組初始化
  double v1,v2,v3,h1;
  //HSL 轉換為 RGB
  if(s == 0){//表示灰色，R，G，B定義為0
  tr = (int)l;
  tg = (int)l;
  tb = (int)l;
  }else{
  if(l<127.5){
  v2 = clo255 l(255+s);
  }else{
  v2 = l+s-clo255sl;
  }
  v1 = 2*l-v2;
  v3 = v2-v1;
  h1 = h+120.0;
  if(h1>=360.0)
  h1 -=360.0;
  //計算tr
  if(h1<60){
  tr = (int)(v1 +v3 h1 clo60);
  }else if(h1<180.0){
  tr = (int)v2;
  }else if(h1<240.0){
  tr = (int)(v1+v3(4-h1clo60));
  }else{
  tr = (int)v1;
  }
  //計算tg
  h1 = h;
  if(h1<60.0){
  tg = (int)(v1 +v3 h1 clo60);
  }else if(h1 <180.0){
  tg = (int)v2;
  }else if(h1<240.0){
  tg = (int)(v1+v3(4-h1clo60));
  }else {
  tg = (int)v1;
  }
  //計算tb
  h1 = h-120.0;
  if(h1 <0.0){
  h1 += 360.0;
  }
  if(h1<60.0){
  tb = (int)(v1 +v3 h1 clo60);
  }else if(h1<180.0){
  tb = (int)v2;
  }else if(h1<240.0){
  tb = (int)(v1+v3(4-h1clo60));
  }else{
  tb = (int)v1;
  }

   }
   rgb1[0] = tr;
   rgb1[1] = tg;
   rgb1[2] = tb;
   return rgb1;
  

  }
  }
  3、圖像面板類
  package chapter4;

import javax.swing.;
import java.awt.;
import java.awt.image.BufferedImage;

/**

• Created by LENOVO on 18-1-29.
  */
  public class ImageJPanel extends JPanel {
  private static final long serialVersionUID = 1L;
  private BufferedImage sourceImage;
  private BufferedImage destImage;

  public ImageJPanel(){}
  public BufferedImage getSourceImage() {
  return sourceImage;
  }

  public void setSourceImage(BufferedImage sourceImage) {
  this.sourceImage = sourceImage;
  }

  public BufferedImage getDestImage() {
  return destImage;
  }

  public void setDestImage(BufferedImage destImage) {
  this.destImage = destImage;
  }

  public void process(){
  //SepiaToneFilter filter = new SepiaToneFilter();
  //SaturationFilter filter = new SaturationFilter();
  //BrightFilter filter = new BrightFilter();
  //ContrastFilter filter = new ContrastFilter();
  // destImage = filter.filter(sourceImage,null);
  //BrightContrastSatUI bcsUI = new BrightContrastSatUI(this);
  }
  public void process(double bcs[]){
  double s = 0.0,b = 0.0,c = 0.0;
  BSCAdjustFilter filter = new BSCAdjustFilter();
  filter.setSaturation(bcs[0]);
  filter.setBrightness(bcs[1]);
  filter.setContrast(bcs[2]);

   destImage = filter.filter(sourceImage,null);
  

  }

  public void paintComponent(Graphics g){
  Graphics2D g2d = (Graphics2D) g.create();
  g2d.clearRect(0,0,this.getWidth(),this.getHeight());

   if(sourceImage != null){
       g2d.drawImage(sourceImage,0,0,sourceImage.getWidth(),sourceImage.getHeight(),null);
       if(destImage != null){
           g2d.drawImage(destImage,sourceImage.getWidth()+10,0,destImage.getWidth(),destImage.getHeight(),null);
       }
   }
  

  }

}
4、滑動窗口面板類
package chapter4;

import javax.swing.;
import java.awt.;
import java.awt.event.ActionListener;

/**

• Created by LENOVO on 18-1-29.
  */
  public class BrightContrastSatUI extends JDialog {
  private static final long serialVersionUID = 1L;
  private JButton okBtn;
  private JLabel bLabel;
  private JLabel cLabel;
  private JLabel sLabel;

  private JSlider bSlider;
  private JSlider cSlider;
  private JSlider sSlider;

  public BrightContrastSatUI(JFrame parent){
  super(parent,"調整圖像亮度、對比度、飽和度");
  initComponent();
  }
  public void initComponent(){
  okBtn = new JButton("確定");
  bLabel = new JLabel("亮度");
  cLabel = new JLabel("對比度");
  sLabel = new JLabel("飽和度");
  bSlider = new JSlider(JSlider.HORIZONTAL,-100,100,0);//滑塊最大值最小值與初始值
  bSlider.setMajorTickSpacing(40);//主刻度標記之間間隔
  bSlider.setMinorTickSpacing(10);//次刻度標記之間間隔
  bSlider.setPaintLabels(true);//確定是否繪制標簽
  bSlider.setPaintTicks(true);//確定是否在滑塊上繪制刻度標記
  bSlider.setPaintTrack(true);//確定是否在滑道上繪制滑道

   cSlider = new JSlider(JSlider.HORIZONTAL,-100,100,0);
   cSlider.setMajorTickSpacing(40);
   cSlider.setMinorTickSpacing(10);
   cSlider.setPaintTicks(true);
   cSlider.setPaintLabels(true);
   cSlider.setPaintTrack(true);
  
   sSlider = new JSlider(JSlider.HORIZONTAL,-100,100,0);
   sSlider.setMajorTickSpacing(40);
   sSlider.setMinorTickSpacing(10);
   sSlider.setPaintTicks(true);
   sSlider.setPaintLabels(true);
   sSlider.setPaintTrack(true);
  
   this.getContentPane().setLayout(new BorderLayout());
  
   JPanel bPanel = new JPanel();
   bPanel.setLayout(new FlowLayout(FlowLayout.CENTER));
   bPanel.add(bLabel);
   bPanel.add(bSlider);
  
   JPanel cPanel = new JPanel();
   cPanel.setLayout(new FlowLayout(FlowLayout.CENTER));
   cPanel.add(cLabel);
   cPanel.add(cSlider);
  
   JPanel sPanel = new JPanel();
   sPanel.setLayout(new FlowLayout(FlowLayout.CENTER));
   sPanel.add(sLabel);
   sPanel.add(sSlider);
  
   JPanel contentPanel = new JPanel();
   contentPanel.setLayout(new GridLayout(3,1));
   contentPanel.add(bPanel);
   contentPanel.add(cPanel);
   contentPanel.add(sPanel);
  
   JPanel btnPanel = new JPanel();
   btnPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
   btnPanel.add(okBtn);
  
   this.getContentPane().add(contentPanel,BorderLayout.CENTER);
   this.getContentPane().add(btnPanel,BorderLayout.SOUTH);
   this.pack();
  

  }

  public static void centre(Window w){//調整窗口位置
  Dimension us = w.getSize();
  Dimension them = Toolkit.getDefaultToolkit().getScreenSize();
  int newX = (them.width-us.width)/2;
  int newY = (them.height-us.height)/2;
  w.setLocation(newX,newY);
  }

  public int getBright(){
  return bSlider.getValue();//返回滑塊的當前亮度值
  }
  public int getContrast(){
  return cSlider.getValue();//返回滑塊當前對比度值
  }
  public int getSat(){
  return sSlider.getValue();//返回滑塊當前飽和度值
  }
  public void showUI(){
  centre(this);
  this.setVisible(true);
  }

  public void setActionListener(ActionListener l){
  this.okBtn.addActionListener(l);
  }
  }
  5、測試類
  package chapter4;

import javax.imageio.ImageIO;
import javax.sound.midi.SysexMessage;
import javax.swing.;
import javax.swing.filechooser.FileNameExtensionFilter;
import java.awt.;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

/**

• Created by LENOVO on 18-1-29.
  */
  public class UI_MainUI extends JFrame implements ActionListener{
  private static final long serialVersionUID = 1L;
  private static final String IMG_CMD = "選擇圖像...";
  private static final String PROCESS_CMD = "處理";

  private JButton imgBtn;
  private JButton processBtn;
  private ImageJPanel imageJPanel;

  private BufferedImage srcImage;
  public UI_MainUI(){
  setTitle("JFrame UI —演示");
  imgBtn = new JButton(IMG_CMD);
  processBtn = new JButton(PROCESS_CMD);

   JPanel btnJpanel = new JPanel();
   btnJpanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
   btnJpanel.add(imgBtn);
   btnJpanel.add(processBtn);
  
   imageJPanel = new ImageJPanel();
   getContentPane().setLayout(new BorderLayout());
   getContentPane().add(imageJPanel,BorderLayout.CENTER);
   getContentPane().add(btnJpanel,BorderLayout.SOUTH);
  
   setupActionListener();
  

  }

  public void setupActionListener(){
  imgBtn.addActionListener(this);
  processBtn.addActionListener(this);
  }

  @Override
  public void actionPerformed(ActionEvent e) {
  if(SwingUtilities.isEventDispatchThread()){
  System.out.println("Event Dispatch Thred!!");
  }
  if(srcImage == null){

       try {
           JOptionPane.showMessageDialog(this,"請先選擇圖像源文件");
           JFileChooser chooser = new JFileChooser();
           chooser.showOpenDialog(null);
           setFileTypeFilter(chooser);
           File f = chooser.getSelectedFile();
           if(f != null){
               srcImage = ImageIO.read(f);
               imageJPanel.setSourceImage(srcImage);//圖像面板添加圖像
               imageJPanel.repaint();
           }
       } catch (IOException e1) {
           e1.printStackTrace();
       }
       return ;
   }
   if (IMG_CMD.equals(e.getActionCommand())){
       if(srcImage == null){
  
           try {
               JOptionPane.showMessageDialog(this,"請先選擇圖像源文件");
               JFileChooser chooser = new JFileChooser();
               chooser.showOpenDialog(null);
               File f = chooser.getSelectedFile();
               if(f != null){
                   srcImage = ImageIO.read(f);
                   imageJPanel.setSourceImage(srcImage);//圖像面板添加圖像
                   imageJPanel.repaint();
               }
           } catch (IOException e1) {
               e1.printStackTrace();
           }
       }
   }else if(PROCESS_CMD.equals(e.getActionCommand())){
       //如果點擊“處理”按鈕，則跳出調整圖像飽和度，對比度，亮度窗口
  
       final BrightContrastSatUI bcsUI =  new BrightContrastSatUI(this);//調整圖像飽和度，對比度，亮度窗口
       //點擊“確定”按鈕，觸發事件
       bcsUI.setActionListener(new ActionListener() {//點擊確定按鈕后執行
           @Override
           public void actionPerformed(ActionEvent e) {
               bcsUI.setVisible(true);
               double s = bcsUI.getSat();
               double b = bcsUI.getBright();
               double c = bcsUI.getContrast();
               bcsUI.dispose();
               imageJPanel.process(new double[]{s,b,c});
               imageJPanel.repaint();
               //System.out.print("das");
           }
       });
      bcsUI.showUI();
   }
  

  }
  public void setFileTypeFilter(JFileChooser chooser){
  FileNameExtensionFilter filter = new FileNameExtensionFilter("JPG & PNG Images","jpg","png");
  chooser.setFileFilter(filter);
  }
  public void openView(){
  setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  setPreferredSize(new Dimension(800,600));
  pack();
  setVisible(true);
  }
  public static void main(String args[]){
  UI_MainUI ui = new UI_MainUI();
  ui.openView();
  }
  }