An Application of Image Processing in Optical Mark Recognition

Date Received: Apr 23, 2020

Date Published: Dec 31, 2020

DOI: https://doi.org/10.31817/vjas.2020.3.4.09

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Issue: Vol. 3 No. 4 (2020): Vietnam Journal of Agricultural Sciences

Section:

ENGINEERING AND TECHNOLOGY

How to Cite:

Ha, T., & Thu, N. (2020). An Application of Image Processing in Optical Mark Recognition. Vietnam Journal of Agricultural Sciences, 3(4), 864–871. https://doi.org/10.31817/vjas.2020.3.4.09

An Application of Image Processing in Optical Mark Recognition

Tran Vu Ha (*) 1   , Nguyen Thi Thu 2

  • Corresponding author: tvha@vnua.edu.vn
  • 1 Faculty of Information Technology, Vietnam National University of Agriculture, Hanoi 131000, Vietnam
  • 2 Faculty of Animal Science, Vietnam National University of Agriculture, Hanoi 131000, Vietnam

    • Keywords

    Image processing, optical mark recognition, survey

    Abstract


    The Optical Mark Recognition (OMR) is very popular with universities for the reading of multiple-choice questions. In this article, we presented a software system for processing surveys at the Vietnam National University of Agriculture based on digital image processing. This software was built using MATLAB and easy to use. The surveys were digitized using a scanner and sent to the software tool. In this study, we tested more than 170 surveys of nine different types. The software tool correctly detected all the valid answers. It was also able to detect all questions with no or multiple marks.