private boolean isIncluded(Color target, Color pixel) 
    {
        int rT = target.getRed();
        int gT = target.getGreen();
        int bT = target.getBlue();
        int aT = target.getAlpha();        
        int rP = pixel.getRed();
        int gP = pixel.getGreen();
        int bP = pixel.getBlue();
        int aP = pixel.getAlpha();
        return(
            (rP<=rT) && (rT<=rP) &&
            (gP<=gT) && (gT<=gP) &&
            (bP<=bT) && (bT<=bP) &&
            (aP<=aT) && (aT<=aP) );
    }