酸洗图像对象? [英] pickling an image object?

问题描述

我是pickle的完全新手，我有一堆(大约100,000张)图片需要pickle.

I'm a complete novice with pickle, and I have a bunch of (about 100,000) images that need to be pickled.

它们首先作为图像对象加载，并转换为数据如下:

They are first loaded as image object, and converted to data as following:

image = {
    'pixels': im.tostring(),
    'size': im.size,
    'mode': im.mode,
}

现在如何将它们腌制到一个 pkl 文件中?

Now how do I pickle them into one pkl file?

推荐答案

你可以这样做:

file = open('data.pkl', 'wb')

# Pickle dictionary using protocol 0.
pickle.dump(image, file)
file.close()

要在字典中阅读，您可以这样做:

To read in the dictionary, you can do it like this:

file = open('data.pkl', 'rb')

image = pickle.load(pkl_file)
print image
file.close()

也可以将数据转储两次:

It is also possible to dump the data twice:

import pickle

# Write to file.
file = open("data.pkl", "wb")
pickle.dump(image1, file)
pickle.dump(image2, file)
file.close()

# Read from file.
file = open("data.pkl", "rb")
image1 = pickle.load(file)
image2 = pickle.load(file)
file.close()

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