png转mnist格式数据出现error：OverflowError: unsigned byte integer is greater than maximum

最新推荐文章于 2021-05-19 22:31:22 发布

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最新推荐文章于 2021-05-19 22:31:22 发布 · 1k 阅读

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在使用特定转换脚本将PNG图像转换为MNIST格式时，遇到OverflowError：unsigned byte integer is greater than maximum。问题源于脚本中的十六进制转换。解决方案包括检查‘batches.meta.txt’文件中的序号标签是否正确匹配。

大神地址：https://github.com/gskielian/JPG-PNG-to-MNIST-NN-Format

一般在`Traceback (most recent call last):
File “convert-images-to-mnist-format.py”, line 47, in
header.append(int(‘0x’+hexval[2:][2:],16))
OverflowError: unsigned byte integer is greater than maximum

如果出现以上错误：
(1)查看‘’batches.meta.txt‘’ 序号标签是否匹配
在这里插入图片描述

	 （2）修改代码

import os
from PIL import Image
from array import *
from random import shuffle

# Load from and save to
Names = [['./training-images', 'train'], ['./test-images', 'test']]

for name in Names:

    data_image = array('B')
    data_label = array('B')

    FileList = []
    for dirname in os.listdir(name[0]):  # [1:] Excludes .DS_Store from Mac OS
        path = os.path.join(name[0], dirname)
        for filename in os.listdir(path):
            if filename.endswith(".png"):
                FileList.append(os.path.join(name[0], dirname, filename))

    shuffle(FileList)  # Usefull for further segmenting the validation set