Convert BMP to 12-bit RGB values

gistfile1.txt

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;

public class Main {

	/**
	 * @param args
	 * @throws IOException
	 */
	public static void main(String[] args) throws IOException {
		File f = new File("/Users/kartben/Downloads/gas.bmp");
		BufferedImage image = ImageIO.read(f);
		int i = 0;
		short convertedPixel = 0;
		for (int x = 0; x < image.getWidth(); x++) {
			for (int y = 0; y < image.getHeight(); y++) {
				int pixel = image.getRGB(x, y);
				byte red = (byte) (((pixel >> 16) & 0xff) / 16);
				byte green = (byte) (((pixel >> 8) & 0xff) / 16);
				byte blue = (byte) (((pixel) & 0xff) / 16);

				convertedPixel = (short) (red * 256 + green * 16 + blue);
				System.out.printf("0x%02X, ", convertedPixel);
			}
			System.out.println();

		}
	}
}