Show-through cancellation in scanned images of thick-printed documents

Kousuke Kojima, Masanobu Takahashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Show-through occurs when a duplex printed paper is scanned using a scanner or a copy machine. The image of backside printing shows through the paper and mixes with the frontside image. Conventional work to cancel show-through considers this problem as a blind source separation problem. Both corrected images and point spread functions, which express blurring of the back-side image, are estimated by an optimization process using a cost function. The conventional method, however, cannot cancel the show-through well when the front-side printing is thick because the effect of front-side printing on the show-through is not taken into account. We propose an improved cancellation method that can be applied to thick-printed areas. The effectiveness of the method was verified by experiments.

Original languageEnglish
Title of host publicationProceedings of SICE Annual Conference 2010, SICE 2010 - Final Program and Papers
PublisherSociety of Instrument and Control Engineers (SICE)
Number of pages4
ISBN (Print)9784907764364
Publication statusPublished - 2010 Jan 1

Publication series

NameProceedings of the SICE Annual Conference


  • BSS
  • Component
  • Cost function
  • PSF
  • Show-through

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering


Dive into the research topics of 'Show-through cancellation in scanned images of thick-printed documents'. Together they form a unique fingerprint.

Cite this