Python 实现图片转换为字符画

主要使用 pillow  

如果没有安装 使用 pillow install pillow 安装一下

看代码：

from PIL import Image
import argparse

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

def getChar(r,g,b,alpha=256):
if alpha == 0:
return ' '
length = len(ascii_char)
gray = int(0.2126 * r + 0.7152 * g + 0.0722 * b)
unit = (256.0 + 1)/length
return ascii_char[int(gray/unit)]

parser = argparse.ArgumentParser()

parser.add_argument('file')
parser.add_argument('-o','--output')
parser.add_argument('--width', type = int, default = 80)
parser.add_argument('--height', type = int, default = 80)

args = parser.parse_args(http://www.my516.com)

IMG = args.file
WIDTH = args.width
HEIGHT = args.height
OUTPUT = args.output

if __name__ == '__main__':

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

txt=""

for i in range(HEIGHT):
for j in range(WIDTH):
txt += getChar(*im.getpixel((j,i)))
txt += '\n'

print(txt)

if OUTPUT:
with open(OUTPUT,'w') as f:
f.write(txt)
else:
with open('output.txt','w') as f:
f.write(txt)
 
---------------------