Python实现批量修改图片格式和大小的方法【opencv库与PIL库】

2020-01-04 13:56:58

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本文实例讲述了Python实现批量修改图片格式和大小的方法。分享给大家供大家参考，具体如下：

第一种方法用到opencv库

import osimport timeimport cv2def alter(path,object):  result = []  s = os.listdir(path)  count = 1  for i in s:    document = os.path.join(path,i)    img = cv2.imread(document)    img = cv2.resize(img, (20,20))    listStr = [str(int(time.time())), str(count)]    fileName = ''.join(listStr)    cv2.imwrite(object+os.sep+'%s.jpg' % fileName, img)    count = count + 1alter('C://imgDemo','C://imgDemo1')

第二种方法用到PIL库

import osimport timefrom PIL import Imagedef alter(path,object):  s = os.listdir(path)  count = 1  for i in s:    document = os.path.join(path,i)    img = Image.open(document)    out = img.resize((20,20))    listStr = [str(int(time.time())), str(count)]    fileName = ''.join(listStr)    out.save(object+os.sep+'%s.jpg' % fileName)    count = count + 1alter('C://imgDemo','C://imgDemo1')

运行上述代码可得到C:/imgDemo目录下对应批量生成的20*20大小的图片。

运行效果如下：

Python,批量,修改,图片格式,opencv,PIL