最近學習了PIL，主要學習的是如何把當前目錄下的圖片拼接在一起，以下僅僅是拼接圖片的學習筆記：

一、學習的網(wǎng)址：
??PIL - 廖雪峰的官方網(wǎng)站
??圖像簡單處理（PIL or Pillow）
??Python拼接圖片
??PIL官方文檔：http://effbot.org/imagingbook/

二、下載：
??（1）windows不能通過pip直接安裝(我目前是還沒找到安裝的方法，如有人找到了請告知一下我，此處省略一萬個感謝)
??（2）根據(jù)需要自己去官網(wǎng)選擇適合自己電腦的安裝包，PIL官方網(wǎng)站：http://pythonware.com/products/pil/
安裝的需要了解更多詳情，看官方文檔 or 問度娘都是可以的 這里就不搬磚了

三、拼接圖片：
??（1）橫向拼接：

import os
from PIL import Image

UNIT_SIZE = 768#高
TARGET_WIDTH = 1184*6 # 拼接完后的橫向長度

path = "D:/imgs/"
images = [] # 先存儲所有的圖像的名稱
for root, dirs, files in os.walk(path):     
    for f in files :
        images.append(f)
for i in range(len(images)/6): # 6個圖像為一組
    imagefile = []
    j = 0
    for j in range(6):
        imagefile.append(Image.open(path+images[i*6+j])) 
    target = Image.new('RGB', (TARGET_WIDTH, UNIT_SIZE))    
    left = 0
    right = UNIT_SIZE
    for image in imagefile:     
        target.paste(image, (left, 0, right, UNIT_SIZE))# 將image復制到target的指定位置中
        left += UNIT_SIZE # left是左上角的橫坐標，依次遞增
        right += UNIT_SIZE # right是右下的橫坐標，依次遞增
        quality_value = 100 # quality來指定生成圖片的質(zhì)量，范圍是0～100
        target.save(path+'/result/'+os.path.splitext(images[i*6+j])[0]+'.jpg', quality = quality_value)
    imagefile = []

（2）縱向拼接：

import os
from PIL import Image

high_size = 768#高
width_size = 1184#寬

path = u'D:/imgs/'
imghigh = sum([len(x) for _, _, x in os.walk(os.path.dirname(path))])#獲取當前文件路徑下的文件個數(shù)
print imghigh
imagefile = []
for root,dirs,files in os.walk(path):
    for f in files:
        imagefile.append(Image.open(path+f))

target = Image.new('RGB',(width_size,high_size*imghigh))#最終拼接的圖像的大小
left = 0
right = high_size
for image in imagefile:
    target.paste(image,(0,left,width_size,right))
    left += high_size#從上往下拼接，左上角的縱坐標遞增
    right += high_size#左下角的縱坐標也遞增
    target.save(path+'result.jpg',quality=100)

*ValueError: images do not match表示圖片大小和box對應的寬度不一致，參考API說明：Pastes another image into this image. The box argument is either a 2-tuple giving the upper left corner, a 4-tuple defining the left, upper, right, and lower pixel coordinate, or None (same as (0, 0)). If a 4-tuple is given, the size of the pasted image must match the size of the region.使用2緯的box避免上述問題

后續(xù)再更新...

操作圖像部分源碼：
https://github.com/michaelliao/learn-python3/blob/master/samples/packages/pil/use_pil_resize.py
https://github.com/michaelliao/learn-python3/blob/master/samples/packages/pil/use_pil_blur.py
https://github.com/michaelliao/learn-python3/blob/master/samples/packages/pil/use_pil_draw.py
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