blurfilter.java

java 编程源代码

// BlurFilter.java
// Blurfilter is an Java2DImageFilter that blurs a BufferedImage.
package com.deitel.advjhtp1.java2d;

// Java core packages
import java.awt.image.*;

public class BlurFilter implements Java2DImageFilter {
   
   // apply blurring filter to BufferedImage
   public BufferedImage processImage( BufferedImage image ) 
   {
      // array used to blur BufferedImage
      float[] blurMatrix = {
         1.0f / 9.0f, 1.0f / 9.0f, 1.0f / 9.0f,
         1.0f / 9.0f, 1.0f / 9.0f, 1.0f / 9.0f,
         1.0f / 9.0f, 1.0f / 9.0f, 1.0f / 9.0f };
  
     // create ConvolveOp for blurring BufferedImage
     BufferedImageOp blurFilter = new ConvolveOp( 
        new Kernel( 3, 3, blurMatrix ), ConvolveOp.EDGE_NO_OP, null );
     
     // apply blurFilter to BufferedImage
     return blurFilter.filter( image, null );
     
   } // end method processImage
}

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 * (C) Copyright 2002 by Deitel & Associates, Inc. and         *
 * Prentice Hall. All Rights Reserved.                         *
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