public class ImgToStr {

     public static void main(String args []){

         //图片路径

         ImgToStr.createAsciiPic("D:\\StrLogo\\GUTy6x2.png");

     }

     public static void createAsciiPic(final String path) {

         //final String base = "@#&$%*o!;.";// 字符串由复杂到简单

         final String base = "/lVXvi*!;.'";

         try {

             final BufferedImage image = ImageIO.read(new File(path));

             System.out.println("W:"+image.getWidth()+" H:"+image.getHeight());

             for (int y = 0; y < image.getHeight(); y += 6) {

                 for (int x = 0; x < image.getWidth(); x+= 2) {

                     final int pixel = image.getRGB(x, y);

                     final int r = (pixel & 0xff0000) >> 16, g = (pixel & 0xff00) >> 8, b = pixel & 0xff;

                     final float gray = 0.299f * r + 0.578f * g + 0.114f * b;

                     final int index = Math.round(gray * (base.length() + 1) / 255);

                     System.out.print(index >= base.length() ? " " : String.valueOf(base.charAt(index)));

                 }

                 System.out.println();

             }

         } catch (final IOException e) {

             e.printStackTrace();

         }

     }

 }