If you think the image file is too large, you don't want to download all kinds of pictures,you can download images of the specified categories as needed.(如果嫌所有类别图像太大，不想下载所有类别图片的话，你可以根据自己的需要下载指定类别的图像)
modules
└──bounding_boxes.py
└──csv_downloader.py
└──downloader.py
└──image_level.py
└──parser.py
└──show.py
└──utils.py
|
OID
├──csv_folder_nl
| └──class-descriptions.csv
| └──train-annotations-machine-imagelabels.csv
|
└──Dataset_nl
|
main.py
|
classes_custom.txt
|
put_the_specified_category_image_into_CSV.py (如果你的内存够大，则忽略这个代码，如果内存小，那么该代码用于把指定类别的数据放到csv,新生成的csv用于替换原始的train-annotations-machine-imagelabels.csv，类别就变少了，就不会再出现内存问题了)
python main.py downloader_ill --sub m --classes Football --type_csv train --limit 1000
or
python main.py downloader_ill --sub m --classes classes_custom.txt --type_csv train --limit 1000
python main.py downloader_ill --sub m --classes Apple Banana Football --multiclasses 1 --type_csv train --limit 1000
or
python main.py downloader_ill --sub m --classes classes_custom.txt --type_csv train --limit 1000