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?

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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