Java图像处理技巧四则(3)

中华网科技 http://tech.china.com 2005-07-19 13:50:31

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public int filterRGB(int x,int y,int pixel) {
return pixel;
}
}

　　要想取得自己的效果，需要修改ReverseColorModel.java中的三个方法，getRed、getGreen、getBlue。
　　下面是上面的效果的一个总的演示程序。
/*GrayImage.java*/
/*@author:cherami */
/*email:cherami@163.net*/
import java.awt.*;
import java.awt.image.*;
import javax.swing.*;
import java.awt.color.*;

public class GrayImage extends JFrame{
Image source,gray,gray3,clip,bigimg;
BufferedImage bimg,gray2;
GrayFilter filter,filter2;
ImageIcon ii;
ImageFilter cropFilter;
int iw,ih;
public GrayImage() {
ii=new ImageIcon("images/11.gif");
source=ii.getImage();
iw=source.getWidth(this);
ih=source.getHeight(this);
filter=new GrayFilter();
filter2=new GrayFilter(GrayModel.CS_FLOAT);
gray=createImage(new FilteredImageSource(source.getSource(),filter));
gray3=createImage(new FilteredImageSource(source.getSource(),filter2));
cropFilter=new CropImageFilter(5,5,iw-5,ih-5);
clip=createImage(new FilteredImageSource(source.getSource(),cropFilter));
bigimg=source.getScaledInstance(iw*2,ih*2,Image.SCALE_DEFAULT);
MediaTracker mt=new MediaTracker(this);
mt.addImage(gray,0);
try {
mt.waitForAll();
} catch (Exception e) {
}
}
public void paint(Graphics g) {
Graphics2D g2=(Graphics2D)g;
bimg=new BufferedImage(iw, ih, BufferedImage.TYPE_INT_RGB);
Graphics2D srcG = bimg.createGraphics();
RenderingHints rhs = g2.getRenderingHints();
srcG.setRenderingHints(rhs);
srcG.drawImage(source, 0, 0, null);
ColorSpace graySpace=ColorSpace.getInstance(ColorSpace.CS_GRAY);
ColorConvertOp op=new ColorConvertOp(graySpace,rhs);
gray2=new BufferedImage(iw, ih, BufferedImage.TYPE_INT_RGB);
op.filter(bimg,gray2);
g2.drawImage(source,40,40,this);
g2.drawImage(gray,80,40,this);
g2.drawImage(gray2,120,40,this);
g2.drawImage(gray3,160,40,this);
g2.drawImage(clip,40,80,this);
g2.drawImage(bigimg,80,80,this);
}
public void update(Graphics g) {
paint(g);
}
public static void main(String args[]) {
GrayImage m=new GrayImage();
m.setSize(400,400);
m.setVisible(true);
}
}

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