# captcha_tf

**Repository Path**: lichuan2013/captcha_tf

## Basic Information

- **Project Name**: captcha_tf
- **Description**: No description available
- **Primary Language**: Python
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2017-08-03
- **Last Updated**: 2020-12-19

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

Introduce
=========
image recognition captchas using TensorFlow, no need to cut off image, run on ubuntu 16.04, python 2.7

![captcha](https://raw.githubusercontent.com/PatrickLib/captcha_recognition/master/data/test_data/CMQVA_num717_1.png)![captcha](https://raw.githubusercontent.com/PatrickLib/captcha_recognition/master/data/test_data/CMQZJ_num908_1.png)![captcha](https://raw.githubusercontent.com/PatrickLib/captcha_recognition/master/data/test_data/CRGEU_num339_1.png)![captcha](https://raw.githubusercontent.com/PatrickLib/captcha_recognition/master/data/test_data/CZHBN_num989_1.png)![captcha](https://raw.githubusercontent.com/PatrickLib/captcha_recognition/master/data/test_data/DZPEW_num388_1.png)

accuracy 99.7% judged by captcha_eval.py, training size 50000, after 20000 steps
captcha generator: https://github.com/lepture/captcha

![captcha](https://raw.githubusercontent.com/PatrickLib/captcha_recognition/master/data/test_data/1ab2s_num286.jpg)![captcha](https://raw.githubusercontent.com/PatrickLib/captcha_recognition/master/data/test_data/1ezx8_num398.jpg)![captcha](https://raw.githubusercontent.com/PatrickLib/captcha_recognition/master/data/test_data/1iv22_num346.jpg)![captcha](https://raw.githubusercontent.com/PatrickLib/captcha_recognition/master/data/test_data/1kxw2_num940.jpg)![captcha](https://raw.githubusercontent.com/PatrickLib/captcha_recognition/master/data/test_data/3mtj9_num765.jpg)

accuracy 52.1% judged by captcha_eval.py, training size 100000, after 200000 steps
captcha generator: https://github.com/Gregwar/CaptchaBundle
 
Dependence
==========
### python 2.7
### Anaconda2 4.3.1
https://www.continuum.io/downloads#linux
### TensorFlow 1.1
https://github.com/tensorflow/tensorflow
### captcha
https://pypi.python.org/pypi/captcha/0.1.1

Usage
=====
## 1.prepare captchas
put your own captchas in **<current_dir>/data/train_data/** for training, **<current_dir>/data/valid_data/** for evaluating and **<current_dir>/data/test_data/** for prediction testing, images file name must be **label_\*.jpg** or **label_\*.png** and recommend size **128x48**. you can also use default generation:
```
python captcha_gen_default.py
```

## 2.convert dataset to tfrecords
the result file will be **<current_dir>/data/train.tfrecord** and **<current_dir>/data/valid.tfrecord**
```
python captcha_records.py
```

## 3.training
train and evaluate neural network on CPU or one single GPU
```
python captcha_train.py
```
you can also train over multiple GPUs
```
python captcha_multi_gpu_train.py
```

## 4.evaluate
```
python captcha_eval.py
```

## 5.predicte 
read captchas from **<current_dir>/data/test_data/** for recogition
```
python captcha_predict.py
```
result like this
```
...
image WFPMX_num552.png precise ----> 'WFPMX'
image QUDKM_num468.png precise ----> 'QUDKM'
```