Linux上安装Python的PIL和Pillow库处理图片的实例教程

pip install PIL==1.1.7

pip install Pillow==2.9.0

*** TKINTER support not available
*** JPEG support not available
*** WEBP support not available
*** ZLIB (PNG/ZIP) support not available
*** FREETYPE2 support not available
*** LITTLECMS support not available

ll /usr/lib/libjpeg.*

-rw-r--r-- 1 root root 221942 Jun 30 2010 /usr/lib/libjpeg.a
-rw-r--r-- 1 root root  918 Jun 30 2010 /usr/lib/libjpeg.la
lrwxrwxrwx 1 root root   17 Mar 21 16:19 /usr/lib/libjpeg.so -> libjpeg.so.62.0.0
lrwxrwxrwx 1 root root   17 Jan 10 10:44 /usr/lib/libjpeg.so.62 -> libjpeg.so.62.0.0
-rw-r--r-- 1 root root 145048 Jun 30 2010 /usr/lib/libjpeg.so.62.0.0

apt-get install libjpeg8-dev for jpg
apt-get install zlib1g-dev for png
apt-get install libwebp-dev for webp

yum install libjpeg-devel libpng-devel libwebp-devel

ln -s /usr/lib/x86_64-linux-gnu/libjpeg.so /usr/lib
ln -s /usr/lib/x86_64-linux-gnu/libfreetype.so /usr/lib
ln -s /usr/lib/x86_64-linux-gnu/libz.so /usr/lib
ln -s /usr/lib/x86_64-linux-gnu/libwebp.so /usr/lib

ls -s /usr/lib64/libjpeg.so /usr/lib
ls -s /usr/lib64/libz.so /usr/lib
ls -s /usr/lib64/libwebp.so /usr/lib

pip install -I PIL==1.1.7

wget http://effbot.org/downloads/Imaging-1.1.7.tar.gz
tar -xzvf Imaging-1.1.7.tar.gz
cd Imaging-1.1.7
python setup.py install

python selftest.py
* TKINTER support not installed
—- JPEG support ok
—- ZLIB (PNG/ZIP) support ok

#coding=utf-8 
from PIL import Image#需要pillow库 
import glob, os 
in_dir ='tmp_photo'#源图片目录 
out_dir = in_dir+'_out'#转换后图片目录 
percent = 0.4#缩放比例 
if not os.path.exists(out_dir): os.mkdir(out_dir) 
 
#图片批处理 
def main(): 
  for files in glob.glob(in_dir+'/*'): 
    filepath,filename = os.path.split(files) 
    im = Image.open(files) 
    w,h = im.size 
    im = im.resize((int(w*percent), int(h*percent))) 
    im.save(os.path.join(out_dir,filename)) 
 
if __name__=='__main__': 
  main()