python图像灰度化_python实现图片二值化及灰度处理方式

#!/usr/bin/env python3.5.2

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

&＃39;&＃39;&＃39;4图片灰度调整及二值化&＃xff1a;

集成环境&＃xff1a;win10 python3 Pycharm

&＃39;&＃39;&＃39;

from PIL import Image

# load a color image

im &＃61; Image.open(&＃39;picturehaha.png&＃39; )#当前目录创建picture文件夹

# convert to grey level image

Lim &＃61; im.convert(&＃39;L&＃39; )

Lim.save(&＃39;pice.jpg&＃39; )

# setup a converting table with constant threshold

threshold &＃61; 185

table &＃61; []for i in range(256):

if i

table.append(0)

else:

table.append(1)

# convert to binary image by the table

bim &＃61; Lim.point(table, &＃39;1&＃39; )

bim.save(&＃39;picf.png&＃39; )