int x1=0;
    int y1=0;
    boolean res = false;
    System.out.println("in formatImage");

for (int x = 0; x <= w-1; x++) {
            for (int y = 0; y <= h-1; y++) {
                if(new Color(bi1.getRGB(x, y)).getRGB()==-1)
                {res=false;}
                else if (!new Color(bi1.getRGB(x, y)).equals(Color.WHITE)) {
                    res = true;
                }
                if (res) {
                    for (int p = y; p <= h-1; p++) {
                        b21.setRGB(x1,p,new Color(bi1.getRGB(x, p)).getRGB());
                    }
                    x1++;
                    res = false;
                    break;
                }
            }
        }
        b21=new BufferedImage(x1,h,BufferedImage.TYPE_INT_RGB);
        x1=0;
        for (int x = 0; x <= w-1; x++) {
            for (int y = 0; y <= h-1; y++) {
                if(new Color(bi1.getRGB(x, y)).getRGB()==-1)
                {res=false;}
                else if (!new Color(bi1.getRGB(x, y)).equals(Color.WHITE)) {
                    res = true;
                }
                if (res) {
                    for (int p = 0; p <= h-1; p++) {
                        b21.setRGB(x1,p,new Color(bi1.getRGB(x, p)).getRGB());
                    }
                    x1++;
                    res = false;
                    break;
                }
            }
        }

for (int y = 0; y <= h-1; y++) {
    System.out.println("Y = "+y);
    for (int x = 0; x <= x1-1; x++) {
        System.out.println("("+x+","+y+") : "+b21.getRGB(x, y));
        if (!new Color(b21.getRGB(x, y)).equals(Color.WHITE)) {
            res = true;
        }
        if (res) {
            for (int p = 0; p <= x1-1; p++) {
               b31.setRGB(p,y1,new Color(b21.getRGB(p, y)).getRGB());

            }
            y1++;
            res = false;
            break;
        }
    }
}
b31=new BufferedImage(x1,y1,BufferedImage.TYPE_INT_RGB);
int ty=y1;
y1=0;
for (int y = 0; y <= h-1; y++) {
    for (int x = 0; x <= x1-1; x++) {
        if (!new Color(b21.getRGB(x, y)).equals(Color.WHITE)) {
            res = true;
        }
        if (res) {
            for (int p = 0; p <= x1-1; p++) {
               b31.setRGB(p,y1,new Color(b21.getRGB(p, y)).getRGB());
            }
            y1++;
            res = false;
            break;
        }
    }
}

if (!new Color(b21.getRGB(x, y)).equals(Color.WHITE))

if (new Color(b21.getRGB(x, y)).getRGB()<-1000000)