[Python] python图片转字符画代码是什么

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# !/usr/bin/env python

# -*- coding:utf-8 -*-

from PIL import Image

import argparse
#命令行输入参数处理

parser = argparse.ArgumentParser()

parser.add_argument('file')   #输入文件

parser.add_argument('-o', '--output')  #输出文件

parser.add_argument('--width', type = int, default = 50) #输出字符画宽

parser.add_argument('--height', type = int, default = 50) #输出字符画高

#获取参数

args = parser.parse_args()

IMG = args.file

WIDTH = args.width

HEIGHT = args.height

OUTPUT = args.output

# 字符画使用的字符集

ascii_char = list("$@B%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_ ~<>i!lI;:,"^`'. ")

def get_char(r,g,b,alpha = 256):

  """将256灰度映射到70个字符上"""

  if alpha == 0:

    return ' '

  length = len(ascii_char)

  # 计算灰度的公式

  gray = int(0.2126 * r 0.7152 * g 0.0722 * b)

  unit = (256.0 1)/length

  index=int(gray/unit)

  return ascii_char[index]

if __name__ == '__main__':

  im = Image.open(IMG)

  im = im.resize((WIDTH,HEIGHT), Image.NEAREST)

  txt = ""

  # 获取每个像素点对应的字符

  for i in range(HEIGHT):

    for j in range(WIDTH):

      txt = get_char(*im.getpixel((j,i)))

    txt = '\n'

  print(txt)

  #字符画输出到文件

  if OUTPUT:

    with open(OUTPUT,'w') as f:

      f.write(txt)

  else:

    with open("output.txt",'w') as f:

      f.write(txt)z