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
Python Computer Vision Aim Bot for Roblox's Phantom Forces

Python-Phantom-Forces-Aim-Bot Python Computer Vision Aim Bot for Roblox's Phanto

drag0ngam3s 2 Jul 11, 2022
Indonesian ID Card OCR using tesseract OCR

KTP OCR Indonesian ID Card OCR using tesseract OCR KTP OCR is python-flask with tesseract web application to convert Indonesian ID Card to text / JSON

Revan Muhammad Dafa 5 Dec 06, 2021
TextBoxes re-implement using tensorflow

TextBoxes-TensorFlow TextBoxes re-implementation using tensorflow. This project is greatly inspired by slim project And many functions are modified ba

Gu Xiaodong 44 Dec 29, 2022
CNN+LSTM+CTC based OCR implemented using tensorflow.

CNN_LSTM_CTC_Tensorflow CNN+LSTM+CTC based OCR(Optical Character Recognition) implemented using tensorflow. Note: there is No restriction on the numbe

Watson Yang 356 Dec 08, 2022
A simple Security Camera created using Opencv in Python where images gets saved in realtime in your Dropbox account at every 5 seconds

Security Camera using Opencv & Dropbox This is a simple Security Camera created using Opencv in Python where images gets saved in realtime in your Dro

Arpit Rath 1 Jan 31, 2022
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
Introduction to Augmented Reality (AR) with Python 3 and OpenCV 4.2.

Introduction to Augmented Reality (AR) with Python 3 and OpenCV 4.2.

fernanda rodríguez 85 Jan 02, 2023
One Metrics Library to Rule Them All!

onemetric Installation Install onemetric from PyPI (recommended): pip install onemetric Install onemetric from the GitHub source: git clone https://gi

Piotr Skalski 49 Jan 03, 2023
A curated list of papers, code and resources pertaining to image composition

A curated list of resources including papers, datasets, and relevant links pertaining to image composition.

BCMI 391 Dec 30, 2022
Roboflow makes managing, preprocessing, augmenting, and versioning datasets for computer vision seamless.

Roboflow makes managing, preprocessing, augmenting, and versioning datasets for computer vision seamless. This is the official Roboflow python package that interfaces with the Roboflow API.

Roboflow 52 Dec 23, 2022
Provides OCR (Optical Character Recognition) services through web applications

OCR4all As suggested by the name one of the main goals of OCR4all is to allow basically any given user to independently perform OCR on a wide variety

174 Dec 31, 2022
The code for “Oriented RepPoints for Aerail Object Detection”

Oriented RepPoints for Aerial Object Detection The code for the implementation of “Oriented RepPoints”, Under review. (arXiv preprint) Introduction Or

WentongLi 207 Dec 24, 2022
Library used to deskew a scanned document

Deskew //Note: Skew is measured in degrees. Deskewing is a process whereby skew is removed by rotating an image by the same amount as its skew but in

Stéphane Brunner 273 Jan 06, 2023
Code for CVPR'2022 paper ✨ "Predict, Prevent, and Evaluate: Disentangled Text-Driven Image Manipulation Empowered by Pre-Trained Vision-Language Model"

PPE ✨ Repository for our CVPR'2022 paper: Predict, Prevent, and Evaluate: Disentangled Text-Driven Image Manipulation Empowered by Pre-Trained Vision-

Zipeng Xu 34 Nov 28, 2022
Solution for Problem 1 by team codesquad for AIDL 2020. Uses ML Kit for OCR and OpenCV for image processing

CodeSquad PS1 Solution for Problem Statement 1 for AIDL 2020 conducted by @unifynd technologies. Problem Given images of bills/invoices, the task was

Burhanuddin Udaipurwala 111 Nov 27, 2022
Visual Attention based OCR

Attention-OCR Authours: Qi Guo and Yuntian Deng Visual Attention based OCR. The model first runs a sliding CNN on the image (images are resized to hei

Yuntian Deng 1.1k Jan 02, 2023
TextBoxes: A Fast Text Detector with a Single Deep Neural Network https://github.com/MhLiao/TextBoxes 基于SSD改进的文本检测算法，textBoxes_note记录了之前整理的笔记。

TextBoxes: A Fast Text Detector with a Single Deep Neural Network Introduction This paper presents an end-to-end trainable fast scene text detector, n

zhangjing1 24 Apr 28, 2022
MXNet OCR implementation. Including text recognition and detection.

insightocr Text Recognition Accuracy on Chinese dataset by caffe-ocr Network LSTM 4x1 Pooling Gray Test Acc SimpleNet N Y Y 99.37% SE-ResNet34 N Y Y 9

Deep Insight 99 Nov 01, 2022
This is a GUI for scrapping PDFs with the help of optical character recognition making easier than ever to scrape PDFs.

pdf-scraper-with-ocr With this tool I am aiming to facilitate the work of those who need to scrape PDFs either by hand or using tools that doesn't imp

Jacobo José Guijarro Villalba 75 Oct 21, 2022
text detection mainly based on ctpn model in tensorflow, id card detect, connectionist text proposal network

text-detection-ctpn Scene text detection based on ctpn (connectionist text proposal network). It is implemented in tensorflow. The origin paper can be

Shaohui Ruan 3.3k Dec 30, 2022