public static void main(String[] args) throws IOException {
        BufferedImage img = ImageIO.read(new File("D:\\IdeaProjects\\Test\\src\\main\\resources\\t.jpg"));

        for (int x = 0; x < img.getHeight(); ++x) {
            for (int y = 0; y < img.getWidth(); ++y) {
                Color color = new Color(img.getRGB(y, x));
                double v = (((color.getRed() * 0.30) + (color.getBlue() * 0.59) + (color.getGreen() * 0.11)));
                System.out.print(strChar(v));
            }
            System.out.println();
        }
    }
    public static String strChar(double g) {
        if (g >= 240) {
            return " ";
        } else if (g >= 210) {
            return ".";
        } else if (g >= 190) {
            return "*";
        } else if (g >= 170) {
            return "+";
        } else if (g >= 120) {
            return "^";
        } else if (g >= 110) {
            return "&";
        } else if (g >= 80) {
            return "8";
        } else if (g >= 50) {
            return "#";
        } else {
            return "@";
        }
    }