python小项目练习之转换像素图片为字符图

实例来源实验楼网站，没事可以多逛逛，在此多谢实验楼的无私分享

 1 from PIL import Image
 2 import argparse
 3
 4 """
 5 description:
 6     将图片像素转换为字母重新绘制输出
 7 """
 8
 9 ascii_char = list("[email protected]%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_+~<>i!lI;:,\"^`‘. ")
10
11 parser = argparse.ArgumentParser()
12
13 parser.add_argument(‘file‘)
14 parser.add_argument(‘-o‘,‘--output‘)
15 parser.add_argument(‘--width‘,type=int,default=80)
16 parser.add_argument(‘--height‘,type=int,default= 80)
17
18 args = parser.parse_args()
19
20 IMG = args.file
21 WIDTH = args.width
22 HEIGHT = args.height
23 OUTPUT = args.output
24
25 def get_char(r,g,b,alpha = 256):
26     if alpha == 0:
27         return ‘ ‘
28     length = len(ascii_char)
29     gray = int(0.2126 * r + 0.7152 * g + 0.0722 * b)
30     unit = (256.0 + 1)/length
31     return ascii_char[int(gray/unit)]
32
33 def main():
34     im = Image.open(IMG)
35     im = im.resize((WIDTH,HEIGHT),Image.NEAREST)
36     txt = ""
37     for i in range(HEIGHT):
38         for j in range(WIDTH):
39             txt += get_char(*im.getpixel((j,i)))
40         txt += ‘\n‘
41     print txt
42
43 if __name__=="__main__":
44     main()

在文件所在的当前目录存放待转换图片，直接执行命令： python convert.py test.png