The open source extract transaction infomation by using OCR.

Related tags

Computer Visionpythonapiocrtransactionocr-pythongoogle-ocr
Overview

Transaction OCR

Mã nguồn trích xuất thông tin transaction từ file scaned pdf, ở đây tôi lựa chọn tài liệu sao kê công khai của Thuy Tien. Mã nguồn có thể ứng dụng để giải quyết bài toán liên quan đến trích xuất thông tin văn bản từ hình ảnh (OCR - Optical Character Recognition) có cấu trúc nội dung xác định và với độ dài các dòng thông tin (row) bất kì như thông tin giao dịch, hóa đơn mua hàng,... Mã nguồn lựa chọn Cloud Vision API đại diện cho OCR model để có được độ chính xác cao, hoặc bạn có thể sử dụng model có sẵn như Vietocr hoặc có thể tự build custom OCR tiếng Việt từ clovaai: text-detection và text-recognition) mà tôi cho là khá tốt.

Getting Started

Dependency

git clone https://github.com/hungtooc/transaction_ocr.git

pip install -r requirements.txt

1. Repair data input

1.1 Download raw data

1.2 Convert pdf files to image

PDF password: [email protected]

python tools/pdf-to-images.py --pdf-password [email protected]

usage: pdf-to-images.py [-h] [--pdf-dir PDF_DIR] [--output-dir OUTPUT_DIR] [--pdf-password PDF_PASSWORD] [--from-page-no FROM_PAGE_NO] [--to-page-no TO_PAGE_NO] [--fix-page-number FIX_PAGE_NUMBER]

optional arguments:
  -h, --help            show this help message and exit
  --pdf-dir PDF_DIR     dir to pdf files
  --output-dir OUTPUT_DIR
                        dir to save images
  --pdf-password PDF_PASSWORD
                        pdf password
  --from-page-no FROM_PAGE_NO
                        extra image from page
  --to-page-no TO_PAGE_NO
                        extra image to page
  --fix-page-number FIX_PAGE_NUMBER
                        fix page number (page_no += fix_page_number)

2. Extract transaction information

The source perform the basic steps to extract transaction information, you may want to add additional processing to optimize the source code in lines marked #todo.

python run.py 

usage: run.py [-h] [--image-dir IMAGE_DIR] [--output-respone-dir OUTPUT_RESPONE_DIR] [--output-content-dir OUTPUT_CONTENT_DIR] [--processed-log-file PROCESSED_LOG_FILE]

optional arguments:
  -h, --help            show this help message and exit
  --image-dir IMAGE_DIR
                        dir to images
  --output-respone-dir OUTPUT_RESPONE_DIR
                        dir to save api respone
  --output-content-dir OUTPUT_CONTENT_DIR
                        dir to save transaction content
  --processed-log-file PROCESSED_LOG_FILE
                        path to log file

File run.py perform 7 main stages:

  • Step 1. Find header & footer.
  • Step 2. Re-rotate image based on header-corner.
  • Step 3. Clean image.
  • Step 4. Call request google-ocr api. (include:text-detection & text-recognition
  • Step 5. Detect transaction line.
    processing-step-boder

  • Step 6. Classify transaction content each line & each content type.
    read-transactions-border

  • Step 7. Save transactions content to csv.
TNX Date Doc No Debit Credit Balance Transaction in detail (note)
13/10/2020 5091.55821 100.000 586062.131020.075756.Ung ho mien trung FT20287151644070 page_1
13/10/2020 5091.56080 1.000.000 586279.131020.075829.Ung ho dong bao mien Trung FT20287592192480 page_1
13/10/2020 5091.56138 200.000 219987.131020.075839.Trinh Thi Thu Thuy chuyen tien ung ho mien Trung page_1
13/10/2020 5091.56155 100.000 586295.131020.075826.UH mien trung FT20287432289640 page_1
13/10/2020 5078.68388 500.000 MBVCB.807033343.PHAM THUY TRANG chuyen tien ung ho tu thien.CT tu 0561000606153 PHAM THUY TRANG toi 0181003469746 TRAN THI THUY TIEN page_1
13/10/2020 5091.56261 1.000.000 184997.131020.075853.Em gui giup do ba con vung lu page_1
13/10/2020 5078.68496 200.000 MBVCB.807033583.Ung ho mien trung.CT tu 0051000531310 HUYNH THI NHU Y toi 0181003469746 TRAN THI THUY TIEN page_1
13/10/2020 5078.68526 100.000 MBVCB.807033514.ung ho mien trung.CT tu 0481000903279 NGUYEN THI HUONG AN toi 0181003469746 TRAN THI THUY TIEN page_1
13/10/2020 5091.56381 100.000 479592.131020.075909.ho tro mien trung page_1
13/10/2020 5078.68537 500.000 MBVCB.807034561.Ung ho Mien trung.CT tu 0721000588146 LE THI HONG DIEM toi 0181003469746 TRAN THI THUY TIEN page_1
13/10/2020 5091.56405 200.000 292363.131020.075845.Ngan hang TMCP Ngoai Thuong Viet Nam 0181003469746 LUC NGHIEM LE chuyen khoan ung ho mien trung page_1
13/10/2020 5091.56410 500.000 479627.131020.075913.Ung ho mien trung page_1

3. Export Excel

Export each csv directory to an excel file. Example:

python tools/export-excel.py --csv-dir "data/content/TÀI KHOẢN XXX746 (Pass_ [email protected])/TỪ 13.10.20 ĐẾN 23.11.20/1. TRANG 1 -1000.pdf"

usage: export-excel.py [-h] --csv-dir CSV_DIR [--output-dir OUTPUT_DIR] [--transaction-template TRANSACTION_TEMPLATE] [--filename FILENAME]

optional arguments:
  -h, --help            show this help message and exit
  --csv-dir CSV_DIR     csv dir
  --output-dir OUTPUT_DIR
                        output dir
  --transaction-template TRANSACTION_TEMPLATE
                        dir to save transaction content
  --filename FILENAME   output filename, leave blank to set default

4. Extract dataset

From api responed data, you can extract dataset to train text-recognization model:

 python tools/export-dataset.py 

usage: extract-dataset.py [-h] [--respone-dir RESPONE_DIR] [-a OUTPUT_ANNOTATION] [-i OUTPUT_IMAGE_DIR]

optional arguments:
  -h, --help            show this help message and exit
  --respone-dir RESPONE_DIR
                        dir to api respone
  -a OUTPUT_ANNOTATION, --output-annotation OUTPUT_ANNOTATION
                        path to save annotation file
  -i OUTPUT_IMAGE_DIR, --output-image-dir OUTPUT_IMAGE_DIR
                        path to save annotation file
  • Dataset of first 1000 pages lalebed by google-ocr (~336k): Google Drive
  • Tips: you may want to balance data text type before extract

5. Result

18107 transaction statement pages have been extracted from pdf format: Google Drive - Accuracy >99%.

You might also like...
Go package for OCR (Optical Character Recognition), by using Tesseract C++ library

gosseract OCR Golang OCR package, by using Tesseract C++ library. OCR Server Do you just want OCR server, or see the working example of this package?

Hiromu OCHIAI 1.9k Dec 28, 2022
Convert PDF/Image to TXT using EasyOcr - the best OCR engine available!
Convert PDF/Image to TXT using EasyOcr - the best OCR engine available!

PDFImage2TXT - DOWNLOAD INSTALLER HERE What can you do with it? Convert scanned PDFs to TXT. Convert scanned Documents to TXT. No coding required!! In

Hans Alemão 2 Feb 22, 2022
A bot that plays TFT using OCR. Keeps track of bench, board, items, and plays the user defined team comp.
A bot that plays TFT using OCR. Keeps track of bench, board, items, and plays the user defined team comp.

NOTES: To ensure best results, make sure you are running this on a computer that has decent specs. 1920x1080 fullscreen is required in League, game mu

francis 125 Dec 30, 2022
This pyhton script converts a pdf to Image then using tesseract as OCR engine converts Image to Text

Script_Convertir_PDF_IMG_TXT Este script de pyhton convierte un pdf en Imagen luego utilizando tesseract como motor OCR convierte la Imagen a Texto. p

alebogado 1 Jan 27, 2022
Extract tables from scanned image PDFs using Optical Character Recognition.

ocr-table This project aims to extract tables from scanned image PDFs using Optical Character Recognition. Install Requirements Tesseract OCR sudo apt

Abhijeet Singh 209 Dec 6, 2022
Ready-to-use OCR with 80+ supported languages and all popular writing scripts including Latin, Chinese, Arabic, Devanagari, Cyrillic and etc.
Ready-to-use OCR with 80+ supported languages and all popular writing scripts including Latin, Chinese, Arabic, Devanagari, Cyrillic and etc.

EasyOCR Ready-to-use OCR with 80+ languages supported including Chinese, Japanese, Korean and Thai. What's new 1 February 2021 - Version 1.2.3 Add set

Jaided AI 16.7k Jan 3, 2023
A Python wrapper for the tesseract-ocr API

tesserocr A simple, Pillow-friendly, wrapper around the tesseract-ocr API for Optical Character Recognition (OCR). tesserocr integrates directly with

Fayez 1.7k Dec 31, 2022
FastOCR is a desktop application for OCR API.

FastOCR FastOCR is a desktop application for OCR API. Installation Arch Linux fastocr-git @ AUR Build from AUR or install with your favorite AUR helpe

Bruce Zhang 58 Jan 7, 2023
OCR-D-compliant page segmentation

ocrd_segment This repository aims to provide a number of OCR-D-compliant processors for layout analysis and evaluation. Installation In your virtual e

OCR-D 59 Sep 10, 2022
Owner
Nguyen Xuan Hung
R&D
Nguyen Xuan Hung
GitHub Repository
Forked from argman/EAST for the ICPR MTWI 2018 CHALLENGE

EAST_ICPR: EAST for ICPR MTWI 2018 CHALLENGE Introduction This is a repository forked from argman/EAST for the ICPR MTWI 2018 CHALLENGE. Origin Reposi

Haozheng Li 157 Aug 23, 2022
Multi-choice answer sheet correction system using computer vision with opencv & python.

Multi choice answer correction 🔴 5 answer sheet samples with a specific solution for detecting answers and sheet correction. 🔴 By running the soluti

Reza Firouzi 7 Mar 07, 2022
RepMLP: Re-parameterizing Convolutions into Fully-connected Layers for Image Recognition

RepMLP RepMLP: Re-parameterizing Convolutions into Fully-connected Layers for Image Recognition Released the code of RepMLP together with an example o

260 Jan 03, 2023
Make OpenCV camera loops less of a chore by skipping the boilerplate and getting right to the interesting stuff

camloop Forget the boilerplate from OpenCV camera loops and get to coding the interesting stuff Table of Contents Usage Install Quickstart More advanc

Gabriel Lefundes 9 Nov 12, 2021
Unofficial implementation of "TableNet: Deep Learning model for end-to-end Table detection and Tabular data extraction from Scanned Document Images"

TableNet Unofficial implementation of ICDAR 2019 paper : TableNet: Deep Learning model for end-to-end Table detection and Tabular data extraction from

Jainam Shah 243 Dec 30, 2022
Code for the paper: Fusformer: A Transformer-based Fusion Approach for Hyperspectral Image Super-resolution

Fusformer Code for the paper: "Fusformer: A Transformer-based Fusion Approach for Hyperspectral Image Super-resolution" Plateform Python 3.8.5 + Pytor

Jin-Fan Hu (胡锦帆) 11 Dec 12, 2022
MORAN: A Multi-Object Rectified Attention Network for Scene Text Recognition

MORAN: A Multi-Object Rectified Attention Network for Scene Text Recognition Python 2.7 Python 3.6 MORAN is a network with rectification mechanism for

Canjie Luo 595 Dec 27, 2022
keras复现场景文本检测网络CPTN: 《Detecting Text in Natural Image with Connectionist Text Proposal Network》；欢迎试用，关注，并反馈问题...

keras-ctpn [TOC] 说明 预测 训练 例子 4.1 ICDAR2015 4.1.1 带侧边细化 4.1.2 不带带侧边细化 4.1.3 做数据增广-水平翻转 4.2 ICDAR2017 4.3 其它数据集 toDoList 总结 说明 本工程是keras实现的CPTN: Detecti

mick.yi 107 Jan 09, 2023
Pure Javascript OCR for more than 100 Languages 📖🎉🖥

Version 2 is now available and under development in the master branch, read a story about v2: Why I refactor tesseract.js v2? Check the support/1.x br

Project Naptha 29.2k Jan 05, 2023
Ready-to-use OCR with 80+ supported languages and all popular writing scripts including Latin, Chinese, Arabic, Devanagari, Cyrillic and etc.

EasyOCR Ready-to-use OCR with 80+ languages supported including Chinese, Japanese, Korean and Thai. What's new 1 February 2021 - Version 1.2.3 Add set

Jaided AI 16.7k Jan 03, 2023
A fastai/PyTorch package for unpaired image-to-image translation.

Unpaired image-to-image translation A fastai/PyTorch package for unpaired image-to-image translation currently with CycleGAN implementation. This is a

Tanishq Abraham 120 Dec 02, 2022
Document manipulation detection with python

image manipulation detection task: -- tianchi function image segmentation salie

JiaKui Hu 3 Aug 22, 2022
Use Convolutional Recurrent Neural Network to recognize the Handwritten line text image without pre segmentation into words or characters. Use CTC loss Function to train.

Handwritten Line Text Recognition using Deep Learning with Tensorflow Description Use Convolutional Recurrent Neural Network to recognize the Handwrit

sushant097 224 Jan 07, 2023

Installations for running keras-theano on GPU Upgrade pip and install opencv2 cd ~ pip install --upgrade pip pip install opencv-python Upgrade keras

Berat Kurar Barakat 14 Sep 30, 2022
Use Youdao OCR API to covert your clipboard image to text.

Alfred Clipboard OCR 注：本仓库基于 oott123/alfred-clipboard-ocr 的逻辑用 Python 重写，换用了有道 AI 的 API，准确率更高，有效防止百度导致隐私泄露等问题，并且有道 AI 初始提供的 50 元体验金对于其资费而言个人用户基本可以永久使用

Junlin Liu 6 Sep 19, 2022
Repository for playing the computer vision apps: People analytics on Raspberry Pi.

play-with-torch Repository for playing the computer vision apps: People analytics on Raspberry Pi. Tools Tested Hardware RasberryPi 4 Model B here, RA

eMHa 1 Sep 23, 2021
基于Paddle框架的PSENet复现

PSENet-Paddle 基于Paddle框架的PSENet复现 本项目基于paddlepaddle框架复现PSENet，并参加百度第三届论文复现赛，将在2021年5月15日比赛完后提供AIStudio链接～敬请期待 AIStudio链接 参考项目： whai362-PSENet 环境配置 本项目

QuanHao Guo 4 Apr 24, 2022
Distort a video using Seam Carving (video) and Vibrato effect (sound)

Distort videos Applies a Seam Carving algorithm (aka liquid rescale) on every frame of a video, and a vibrato effect on the audio to distort the video

AlexZeGamer 6 Dec 06, 2022
Write-ups for the SwissHackingChallenge2021 CTF.

SwissHackingChallenge 2021 : Write-ups This repository contains a collection of my write-ups for challenges solved during the SwissHackingChallenge (S

Julien Béguin 3 Jun 07, 2021
A synthetic data generator for text recognition

TextRecognitionDataGenerator A synthetic data generator for text recognition What is it for? Generating text image samples to train an OCR software. N

Edouard Belval 2.5k Jan 04, 2023