Turns a 25x25 gif single frame image into arduino code for a 25x25 led matrix

DALE-convert-img.java

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;

import java.io.*;
import java.lang.*;
public class Convert {
  public static void main(String[] args) {
		boolean preview = false;
		if (args.length >0 && args[0].equals("p")) {
			preview=true;
		}
		BufferedImage image = null;
		try {
		    image = ImageIO.read(new File("gif.gif"));
		} catch (IOException e) {
		}

		for (int i=0; i<25; i++) {
			for (int j=0; j<25; j++) {
				int c = image.getRGB(j,i);
				int  red = (c & 0x00ff0000) >> 16;
				int  green = (c & 0x0000ff00) >> 8;
				int  blue = c & 0x000000ff;
				// and the Java Color is ...
				int lum = (int) Math.sqrt( .241*red*red + .691*green*green + .068*blue*blue);
				if (lum >200) 	{		
					if (preview) {
						System.out.print("#");
					} else {
						System.out.println("displayArea.SetPoint(" + i + ", " + j + ");");
					}
				} else {
					if (preview) {
						System.out.print("  ");			
					}					
				}
			}
			if (preview) {
				System.out.println();			
			}		
		}
	}
}