This is the python version of captcha recognition implemented by MXNet.

It is modified from reference1:xlvector. There is also a R version of captcha recognition of MXNet reference2:incubator-mxnet. However the main difference is this version can recognize a captcha composed of number or lowercase letters or capital. For example:

Usage

• If you want to train from scratch, please run:

python captcha_train_from_scratch.py

• If you want to fine tune in the pretrained model(recommend), please run:

python captcha_train_finetune.py

Attention

• pretrained model can be download from:GoogleDrive

• If you train from scratch, the result of model is sensitive to learning rate and is a little difficult to converge, so fine tune is recommended.