使用python一一打开文件夹中的图像？
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Open images from a folder one by one using python?
提问by user2766019
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.
大家好我需要从一个文件夹中一张一张地打开图像对图像进行一些处理并将它们保存回其他文件夹。我正在使用以下示例代码执行此操作。
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")
Is there any best way to do this?
有没有最好的方法来做到这一点？
Thanks!
谢谢！
采纳答案by Christian Ternus
Sounds like you want multithreading. Here's a quick rev that'll do that.
听起来你想要多线程。这是一个快速的 rev 可以做到这一点。
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)
(edit: use multiprocessinginstead of Thread, see that doc for more examples and information)
（编辑：使用multiprocessing而不是Thread，有关更多示例和信息，请参阅该文档）
回答by Pankaj Bokdia
You can use glob to read the images one by one
可以使用glob一一读取图片
import glob
from PIL import Image
images=glob.glob("*.jpg")
for image in images:
img = Image.open(image)
img1 = img.resize(50,50)
img1.save("newfolder\"+image)
