grayimage.java

计算机图象处理的java源代码,可以实现图象的放大缩小等基本功能

package image;
import   com.sun.image.codec.jpeg.JPEGCodec; 
import   com.sun.image.codec.jpeg.JPEGImageEncoder; 
import   java.awt.Graphics; 
import   java.awt.Image; 
import java.awt.Toolkit;
import   java.awt.image.BufferedImage; 
import java.awt.image.ImageObserver;
import java.awt.image.MemoryImageSource;
import java.awt.image.PixelGrabber;
import java.awt.image.Raster;
import   java.io.*; 

import   javax.imageio.ImageIO; 
import javax.swing.ImageIcon;
public class GrayImage extends BasicImage {

	Image imageProcessed=null;
	public GrayImage() {
		super();
		// TODO 自动生成构造函数存根
	}
	public GrayImage(String fileName) {
		super(fileName);
		// TODO 自动生成构造函数存根
	}

	 public int  graysinglepixel(int x, int y, int pixel) {//读取 alpha  red   green   blue 的值
         int alpha = (pixel >> 24) & 0xff;
         int red   = (pixel >> 16) & 0xff;
         int green = (pixel >>  8) & 0xff;
         int blue  = (pixel      ) & 0xff;
         int gray=(int)( 0.30*red+0.59*green+0.11*blue);    
         return gray;//Gray＝0.30*R+0.59*G+0.11*B
         // Deal with the pixel as necessary...
         
  }
     
     public int[] grayImage(Image img, int x, int y, int w, int h)
     {
     	 int[] gray_data = this.imageData;
     	 //int [] gray_data=new int[w * h];
        
          for (int j = 0; j < h; j++) {
              for (int i = 0; i < w; i++) {
             	int gray=graysinglepixel(x+i, y+j, gray_data[j * w + i]);
             	gray_data[w*j+i]=(255<<24)|(gray<<16)|(gray<<8)|gray;
             	//gray_data[j * w + i]=cell_gray_value;
              }
          }
          return  gray_data;
     }
     public int[] grayImage() 
     {
    System.out.println("-------------grayImage()");
    	return this.grayImage(image,0,0,this.wideth,this.height); 
    	 
     }
     
public Image imageProcess()
{
	 System.out.println("-------------imageProcess()");
	 int [] data_gray=  this.grayImage();
	 imageProcessed=this.createImage(data_gray);
	
	return imageProcessed;
}
	
	
	public  void saveImageAfterProcess()
	{
		 System.out.println("-------------imageProcess()");
		this.saveImage("d:\\006.bmp");
	}
	
	public  void showImageAfterProcess()
	{}
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO 自动生成方法存根
		GrayImage zyy=new GrayImage("003.jpg");
		  zyy.imageProcess();
		  zyy.saveImage("d:\\007.bmp");
		
	}

}