图片转字符画

ImgToChar.java

import java.awt.image.BufferedImage;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import javax.imageio.ImageIO;

//可以将图片转换为字符画
public class ImgToChar {
    static String charList = new String("$@B%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\\|()1{}[]?-_+~<>i!lI;:,\"^`'. ");
    static String imgPath = "input";//图片的路径
    static String outputName = "output.txt";//输出TXT文件的路径
    public static void main(String[] args) throws IOException {
        BufferedImage image= ImageIO.read(new File(imgPath));
        File writename = new File(outputName);
        writename.createNewFile();
        BufferedWriter out = new BufferedWriter(new FileWriter(writename));
        int density = 4;
        for(int y = 0;y<image.getHeight();++y)
        {
            if((y%density )!=0)
                continue;
            for(int x =0 ;x<image.getWidth();++x)
            {
                if((x%density )!=0)
                    continue;
                int RGB = image.getRGB(x, y);
                int a = (RGB>>24) & 255;
                int r = (RGB>>16) & 255;
                int g = (RGB>>8) & 255;
                int b = RGB & 255;
                char c = getChar(r,g,b,a);
                out.write(c);
                out.write(c);
            }
            out.newLine();
        }
        out.flush();
        out.close();

    }

    static char getChar(int r,int g,int b,int a)
    {
        if(a==0)
            return ' ';
        int gray =  (int) (0.2126 * r + 0.7152 * g + 0.0722 * b);
        double unti = 256.0/charList.length();
        int index = (int) (gray/unti);
        return charList.charAt(index);
    }
}