调整图像亮度、对比度、饱和度

完整代码如下：
1、主要方法编写类
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();//调整各系数取值范围
int width = src.getWidth();
int height = src.getHeight();
if(dest == null){
dest = creatCompatibleDestImage(src,null);
}
int[] inpixels = new int[widthheight];
int[] outpixels = new int[widthheight];
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转换为HSL色彩空间
double[] hsl = rgb2Hsl(new int[]{tr,tg,tb});

//调整饱和度
hsl[1] = hsl[1]*saturation;
if(hsl[1]<0.0){
hsl[1] = 0.0;
}
if(hsl[1]>255.0){
hsl[1] = 255.0;
}

//调整亮度
hsl[2] = hsl[2]*brightness;
if(hsl[2]<0.0){
hsl[2] = 0.0;
}
if(hsl[2]>255.0){
hsl[2] = 255.0;
}
//HSL转换为rgb空间
int[] rgb = hsl2RGB(hsl);
tr = clamp(rgb[0]);
tg = clamp(rgb[1]);
tb = clamp(rgb[2]);

//调整对比度
double cr = ((tr/255.0d)-0.5d)contrast;
double cg = ((tg/255.0d)-0.5d)contrast;
double cb = ((tb/255.0d)-0.5d)contrast;
//输出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、抽象类，集成公有类方法
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(){}
  //读取像素数据
  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);
  }
  }
  //写入像素数据
  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色彩空间转换为HSL色彩空间
  public double[] rgb2Hsl(int[] hsl){
  double min,max,dif,sum;
  double f1,f2;
  double h,s,l;//HSL色彩空间的三个分量
  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;//亮度仅与图像的最多颜色成分和最少的颜色成分的总量有关。亮度越小，图像越趋于黑色。亮度越高图像越趋于明亮的白色。
  if(dif == 0){//最大值与最小值相同，则表示为灰色，那么s定义为0，h未定义通常也写为0
  h = 0.0;
  s = 0.0;
  } else if(l<127.5){//根据亮度l计算饱和度
  s = 255.0dif/sum;
  } else{
  s = 255.0dif/(510.0-sum);
  }
  h = (f1 +60.0f2)/dif;//计算色调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色彩空间转换为RGB色彩空间
  public int[] hsl2RGB(double[] hsl){
  double h,s,l;//HSL色彩空间的三个分量
  h = hsl[0];
  s = hsl[1];
  l = hsl[2];
  int[] rgb1={0,0,0};//RGB数组初始化
  double v1,v2,v3,h1;
  //HSL 转换为 RGB
  if(s == 0){//表示灰色，R，G，B定义为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;
  //计算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;
  }
  //计算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;
  }
  //计算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、图像面板类
  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、滑动窗口面板类
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,"调整图像亮度、对比度、饱和度");
  initComponent();
  }
  public void initComponent(){
  okBtn = new JButton("确定");
  bLabel = new JLabel("亮度");
  cLabel = new JLabel("对比度");
  sLabel = new JLabel("饱和度");
  bSlider = new JSlider(JSlider.HORIZONTAL,-100,100,0);//滑块最大值最小值与初始值
  bSlider.setMajorTickSpacing(40);//主刻度标记之间间隔
  bSlider.setMinorTickSpacing(10);//次刻度标记之间间隔
  bSlider.setPaintLabels(true);//确定是否绘制标签
  bSlider.setPaintTicks(true);//确定是否在滑块上绘制刻度标记
  bSlider.setPaintTrack(true);//确定是否在滑道上绘制滑道

  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){//调整窗口位置
  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();//返回滑块的当前亮度值
  }
  public int getContrast(){
  return cSlider.getValue();//返回滑块当前对比度值
  }
  public int getSat(){
  return sSlider.getValue();//返回滑块当前饱和度值
  }
  public void showUI(){
  centre(this);
  this.setVisible(true);
  }

  public void setActionListener(ActionListener l){
  this.okBtn.addActionListener(l);
  }
  }
  5、测试类
  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 = "选择图像...";
  private static final String PROCESS_CMD = "处理";

  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,"请先选择图像源文件");
  JFileChooser chooser = new JFileChooser();
  chooser.showOpenDialog(null);
  setFileTypeFilter(chooser);
  File f = chooser.getSelectedFile();
  if(f != null){
  srcImage = ImageIO.read(f);
  imageJPanel.setSourceImage(srcImage);//图像面板添加图像
  imageJPanel.repaint();
  }
  } catch (IOException e1) {
  e1.printStackTrace();
  }
  return ;
  }
  if (IMG_CMD.equals(e.getActionCommand())){
  if(srcImage == null){

  try {
  JOptionPane.showMessageDialog(this,"请先选择图像源文件");
  JFileChooser chooser = new JFileChooser();
  chooser.showOpenDialog(null);
  File f = chooser.getSelectedFile();
  if(f != null){
  srcImage = ImageIO.read(f);
  imageJPanel.setSourceImage(srcImage);//图像面板添加图像
  imageJPanel.repaint();
  }
  } catch (IOException e1) {
  e1.printStackTrace();
  }
  }
  }else if(PROCESS_CMD.equals(e.getActionCommand())){
  //如果点击“处理”按钮，则跳出调整图像饱和度，对比度，亮度窗口

  final BrightContrastSatUI bcsUI = new BrightContrastSatUI(this);//调整图像饱和度，对比度，亮度窗口
  //点击“确定”按钮，触发事件
  bcsUI.setActionListener(new ActionListener() {//点击确定按钮后执行
  @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();
  }
  }