How to save data into .imdb format file in "gen_net_data_lmdb.py"

[TMaysGGS]

Hi,

First I want to thank you for your work, which gives me a better understanding on MTCNN.

I am confused about the last several lines of the codes in "gen_net_data_lmdb.py" since I cannot find any information about the format ".imdb". Are you actually using the lmdb format since the name of this Python script used "lmdb"?

Hope to hear from you. Thanks.