createScaledRendering weird problem when create small thumbnail

From: xj92wang_at_hotmail.com (xj92wang_at_yahoo.com)
Date: 06/28/04 

Date: 28 Jun 2004 07:44:53 -0700

I have following code to convert a big image to smaller thumbnail,
it work's fine until one day this image come out

http://www.here4now.com/mobdata/sunbleached/Untitled-2.gif

The original size is 200x205, if I resize it to 101x103, it looks
still fine, but one pixed smaller , say 100x102, the result image is
total unacceptable.

Any help or hint will be appreciate

Ivan Wang

P.S. I didn't use Image.getScaledInstance to resize the image because
our server don't have X-window installed.

/*******************************************************************/
public static void resize(String file1, String file2){
      source = JAI.create("fileload", file1);
      ParameterBlock pb = new ParameterBlock();
      pb.addSource(source);
      pb.add(null).add(null).add(null).add(null).add(null);
      RenderableImage ren = JAI.createRenderable("renderable", pb);
      pb = new ParameterBlock();
      pb.addSource(ren);
      int w = source.getWidth()/2;
      int h = source.getHeight()/2;
      //RenderingHints renderingHints = new RenderingHints( null );
      //renderingHints.put( RenderingHints.KEY_COLOR_RENDERING,
      // RenderingHints.VALUE_COLOR_RENDER_QUALITY );
      PlanarImage dst = (PlanarImage)ren.createScaledRendering(w, h,
null);
      JAI.create("filestore",dst,file2,"PNG");
}
/*******************************************************************/

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