sharpenfilter.java

java 编程源代码

// SharpenFilter.java
// SharpenFilter is an Java2DImageFilter that sharpens the edges 
// in a BufferedImage.
package com.deitel.advjhtp1.java2d;

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

public class SharpenFilter implements Java2DImageFilter {
   
   // apply edge-sharpening filter to BufferedImage
   public BufferedImage processImage( BufferedImage image ) 
   {
      // array used to detect edges in image
      float[] sharpenMatrix = {
         0.0f, -1.0f, 0.0f,
         -1.0f, 5.0f, -1.0f,
         0.0f, -1.0f, 0.0f };
                            
      // create filter to sharpen edges
      BufferedImageOp sharpenFilter = 
         new ConvolveOp( new Kernel( 3, 3, sharpenMatrix ), 
            ConvolveOp.EDGE_NO_OP, null );
      
      // apply sharpenFilter to displayImage
      return sharpenFilter.filter( image, null );
      
   } // end method processImage
}

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 * (C) Copyright 2002 by Deitel & Associates, Inc. and         *
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