图片转像素风实现

Python用来写各种小工具简直是神器，昨天晚上花了点时间实现了一个图片转像素风的小工具，下面附上图片Demo和代码

下面是实现的具体代码：

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('--maxlen', type=int, default=150)
  
# 获取参数  
args = parser.parse_args()  
  
IMG = args.file  
MAXLEN = args.maxlen  
OUTPUT = args.output

def resize_image(im):
    (width, height) = im.size
    max_len = max(width, height)

    if max_len <= MAXLEN:
        return im
    else:
        scale = max_len / MAXLEN
        size = (int(width//scale), int(height//scale))
        return  im.resize(size, Image.NEAREST) 
  
if __name__ == '__main__':  

    im = Image.open(IMG)  
    im = resize_image(im) 
  
    txt = ""  
    (width, height) = im.size
    for i in range(height):  
        for j in range(width):  
            (r, b, g) = im.getpixel((j, i))
            txt += "<font style='background:rgb({},{},{});display:inline-block;width:3px;height:3px;margin:1px;'></font>".format(r, b, g)
        txt += '</br>'  
  
    if not OUTPUT:
        OUTPUT =  "output.txt"

    with open(OUTPUT,'w') as f:  
        f.write(txt)