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
 # 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")