import java.awt.image.BufferedImage;
import java.awt.image.BufferedImageOp;
import java.awt.image.ConvolveOp;
import java.awt.image.Kernel;
public class Main {
public static void main(String[] argv) throws Exception {
BufferedImage bufferedImage = new BufferedImage(200, 200,
BufferedImage.TYPE_BYTE_INDEXED);
Kernel kernel = new Kernel(3, 3, new float[] { -2, 0, 0, 0, 1, 0, 0, 0, 2 });
BufferedImageOp op = new ConvolveOp(kernel);
bufferedImage = op.filter(bufferedImage, null);
}
}