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Study on Measuring Geometrical Modification of Document Image in Scanning Process

스캐닝 과정에서 발생하는 전자문서의 기하학적 변형감지에 관한 연구

  • Oh, Dong-Yeol (Department of Computer Science, SoongSil University) ;
  • Oh, Hae-Seok (Department of Computer Science, Kyungwon University) ;
  • Rhew, Sung-Yul (Department of Computer Science, SoongSil University)
  • 오동열 (숭실대학교 IT대학 컴퓨터학과) ;
  • 오해석 (경원대학교 IT대학 컴퓨터 공학) ;
  • 류성열 (숭실대학교 IT대학 컴퓨터학과)
  • Published : 2009.08.31

Abstract

Scanner which is a kind of optical devices is used to convert paper documents into document image files. The assessment of scanned document image is performed to check if there are any modification on document image files in scanning process. In assessment of scanned documents, user checks the degree of skew, noise, folded state and etc This paper proposed to how to measure geometrical modifications of document image in scanning process. In this study, we check the degree of modification in document image file by image processing and we compare the evaluation value which means the degree of modification in each items with OCR success ratio in a document image file. To analyse the correlation between OCR success ratio and the evaluation value which means the degree of modification in each items, we apply Pearson Correlation Coefficient and calculate weight value for each items to score total evaluation value of image modification degrees on a image file. The document image which has high rating score by proposed method also has high OCR success ratio.

Keywords

Quality Assurance;Document Image Quality Check;Document Image Processing

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