(For example: there are a total of 68114 images in the dataset, only 64564 images in lmdb format can be converted)
Problem point: The lmdb script can only convert part of the image text correctly, so that the dictionary mapping error occurs during crnn model training.
Reason: It is related to the format of the self-made script, for example: LLDCL/7×7_1.ttf and fonts/LLDCL/12px.ttf have different effects on the character symbol (℃).