使用python一一打开一个文件夹中的图像? [英] Open images from a folder one by one using python?
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问题描述
您好,我需要一一打开一个文件夹中的图像,然后对图像进行一些处理,然后将其保存回另一个文件夹.我正在使用以下示例代码进行此操作.
Hi all I need to open images from a folder one by one do some processing on images and save them back to other folder. I am doing this using following sample code.
path1 = path of folder of images
path2 = path of folder to save images
listing = os.listdir(path1)
for file in listing:
im = Image.open(path1 + file)
im.resize((50,50)) % need to do some more processing here
im.save(path2 + file, "JPEG")
有什么最好的方法吗?
谢谢!
推荐答案
想要多线程处理的声音.这是一个快速的版本,可以完成.
Sounds like you want multithreading. Here's a quick rev that'll do that.
from multiprocessing import Pool
import os
path1 = "some/path"
path2 = "some/other/path"
listing = os.listdir(path1)
p = Pool(5) # process 5 images simultaneously
def process_fpath(path):
im = Image.open(path1 + path)
im.resize((50,50)) # need to do some more processing here
im.save(os.path.join(path2,path), "JPEG")
p.map(process_fpath, listing)
(使用多重处理代替Thread
,请参阅该文档有关更多示例和信息)
(edit: use multiprocessing instead of Thread
, see that doc for more examples and information)
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