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public BufferedImage Embrossing(BufferedImage bi)
{
BufferedImage buff = new BufferedImage(bi.getWidth(), bi.getHeight(), bi.getType());

Kernel kernel = new Kernel(3, 3, new float[] {
-2f, 0f, 0f,
0f, 1f, 0f,
0f, 0f, 2f
});

ConvolveOp op = new ConvolveOp(kernel);
op.filter(bi, buff);

return buff;
}

public BufferedImage Blurring(BufferedImage bi)
{
BufferedImage buff = new BufferedImage(bi.getWidth(), bi.getHeight(), bi.getType());

Kernel kernel = new Kernel(3, 3, new float[] {
1f/9f, 1f/9f, 1f/9f,
1f/9f, 1f/9f, 1f/9f,
1f/9f, 1f/9f, 1f/9f
});

ConvolveOp op = new ConvolveOp(kernel);
op.filter(bi, buff);

return buff;
}

public BufferedImage Sharpening(BufferedImage bi)
{
BufferedImage buff = new BufferedImage(bi.getWidth(), bi.getHeight(), bi.getType());

Kernel kernel = new Kernel(3, 3, new float[] {
-1f, -1f, -1f,
-1f,  9f, -1f,
-1f, -1f, -1f
});

ConvolveOp op = new ConvolveOp(kernel);
op.filter(bi, buff);

return buff;
}

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