python实现将文件夹内的每张图片批量分割成多张

# -*- coding: utf-8 -*-
"""
Created on Thu Aug 23 18:19:09 2018
@author: Administrator
"""
 
import os
from PIL import Image
 
# 切割图片
def splitimage(src, rownum, colnum, dstpath):
  img = Image.open(src)
  w, h = img.size
  if rownum <= h and colnum <= w:
    print('Original image info: %sx%s, %s, %s' % (w, h, img.format, img.mode))
    print('图片切割')
 
    s = os.path.split(src)
    if dstpath == '':
      dstpath = s[0]
    fn = s[1].split('.')
    basename = fn[0]
    ext = fn[-1]
 
    num = 0
    rowheight = h // rownum
    colwidth = w // colnum
    for r in range(rownum):
      for c in range(colnum):
        box = (c * colwidth, r * rowheight, (c + 1) * colwidth, (r + 1) * rowheight)
        img.crop(box).save(os.path.join(dstpath, basename + '_' + str(num) + '.' + ext), ext)
        num = num + 1
 
    print('共生成 %s 张小图片。' % num)
  else:
    print('error')
 
# 创建文件夹
def mkdir(path):
  # 去除首位空格
  path = path.strip()
  # 去除尾部 \ 符号
  path = path.rstrip("\\")
 
  # 判断路径是否存在
  # 存在   True
  # 不存在  False
  isExists = os.path.exists(path)
 
  # 判断结果
  if not isExists:
    os.makedirs(path)
    print (path+' 创建成功')
    return True
  else:
    print (path + ' 目录已存在')
    return False
 
 
folder = r'C:/Users/Administrator/Desktop/testresults' # 存放图片的文件夹
path = os.listdir(folder)
# print(path)
 
for each_bmp in path: # 批量操作
    first_name, second_name = os.path.splitext(each_bmp)
    each_bmp = os.path.join(folder, each_bmp)
    src = each_bmp
    print(src)
    print(first_name)
    # 定义要创建的目录
    mkpath = "C:/Users/Administrator/Desktop/results/"+ first_name
    <b style="color:transparent">本文来源gao@!dai!ma.com搞$$代^@码!网!</b># 调用函数
    mkdir(mkpath)
    if os.path.isfile(src):
      dstpath = mkpath
      if (dstpath == '') or os.path.exists(dstpath):
        row = int(1) # 切割行数
        col = int(10) # 切割列数
        if row > 0 and col > 0:
          splitimage(src, row, col, dstpath)
        else:
          print('无效的')
      else:
        print('图片保存目录 %s 不存在！' % dstpath)
    else:
      print('图片文件 %s 不存在！' % src)

from PIL import Image
 
for i in range(1,100):
  img = Image.open("C:/Users/Administrator/Desktop/test_results/"+str(i)+".png")
  img = img.convert("L")
  img = img.resize((960,96))
 
  img.save("C:/Users/Administrator/Desktop/test_results/"+str(i)+".png", "PNG")