# ChineseAddress_OCR

**Repository Path**: egg_tree/ChineseAddress_OCR

## Basic Information

- **Project Name**: ChineseAddress_OCR
- **Description**: Photographing Chinese-Address OCR implemented using CTPN+CTC+Address Correction. 拍照文档中文地址文字识别。
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 1
- **Created**: 2020-04-02
- **Last Updated**: 2023-03-03

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# ChineseAddress_OCR
## 环境不可控场景下拍照文档地址文字识别
Photographing Chinese-Address OCR implemented using CTPN+CTC+Address Correction.   
  
This is a project of the 2018 Deecamp 25th group (DRPRG). Thanks to my team members!  
这个是 2018年 Deecamp 25组 (深度受限抠图小组) 的项目，非常非常的感谢每一位队友！  
  
Our Demo: https://www.bilibili.com/video/av30081208  
Our Wechat Program (微信小程序)： OCRdeecamp  
<img src="https://github.com/Walleclipse/ChineseAddress_OCR/raw/master/demo/demo.png" width="600" >  
Reference Paper: [Detecting Text in Natural Image with Connectionist Text Proposal Network](https://arxiv.org/pdf/1609.03605.pdf)  
Reference Code: https://github.com/YCG09/chinese_ocr (Thanks to Yang Chenguang)  


## Method 
Text Detection : [CTPN](https://arxiv.org/pdf/1609.03605.pdf)  
Text Recognition: CTC+DenseNet  
Address Judgment: Light GBM or [textgrocery](https://github.com/2shou/TextGrocery)  
Address Correction: Fuzzy matching based on address library   

<div style="float:center;border:solid 1px 000;margin:2px;"><img src="https://github.com/Walleclipse/ChineseAddress_OCR/raw/master/demo/method.png"  width="700" ></div>  
  
## About Code
`demo_final.py`    
You can simply run demo_final.py for inference. Input a picture and output the Chinese address string.   
`run_flask.py`  
Communication between server and Wechat program with flask  
`ocr_whole.py`    
Text detection with CTPN, and text recognition with Densenet  
`stupid_addrs_rev.py`    
Address correction using fuzzy-matching based on address library  
`ctpn`    
If you want to know more details about CTPN codes, please check https://github.com/eragonruan/text-detection-ctpn  
`wechat_program`    
Some files of Wechat program (微信小程序的一些文件)

## Results
In our dataset, the accuracy of exactly correct is 83%, the accuracy of edit distance less than 3 is 97%.   
Our program has high accuracy at identifying very fuzzy multi-line addresses. 

<div style="float:left;border:solid 1px 000;margin:2px;"><img src="https://github.com/Walleclipse/ChineseAddress_OCR/raw/master/demo/result2.png" width="750" ></div>   

If you want to know more details, please read [ChineseAddress_OCR_Report.pdf](ChineseAddress_OCR_Report.pdf)(中文).

## Simple Use
You need to create a new py file and call the `def demo_flask` from `demo_final.py` to run the project.
```
from demo_final import demo_flask
image_file="./demo.png" # image path
output_file,ret_total = demo_flask(image_file)
print('Recognition Result:')
print(ret_total)
```
If you encounter the error related to "converter", you need to rewrite some code lines to Python 3 grammar.