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The Image Preprocessing and Check of Amount for VAT Invoices

  • Yue Yin
  • Yu Wang
  • Ying Jiang
  • Shangang FanEmail author
  • Jian Xiong
  • Guan Gui
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 516)

Abstract

With the continuous development of the social economy, the problem of low efficiency of invoice reimbursement has received more and more attention from companies, universities, and governments in China. In this paper, based on the recognition of invoices by OCR, we use Hough transform to preprocess the scanned image of invoices and creatively introduce the idea of checking the amount of money. We proofread the uppercase and lowercase amounts in the OCR recognition results. Using this method, the accuracy rate of OCR recognition increased from 95 to 99%, which greatly reduced the employees’ reimbursement time.

Keywords

Image processing Hough transform Check amount VAT invoice 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Yue Yin
    • 1
  • Yu Wang
    • 1
  • Ying Jiang
    • 1
  • Shangang Fan
    • 1
    Email author
  • Jian Xiong
    • 1
  • Guan Gui
    • 1
  1. 1.College of Telecommunication and Information EngineeringNanjing University of Posts and TelecommunicationsNanjingChina

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