"ClearPlate" for capturing printed information: A scanner and viewfinder in one optical unit

Atsuhiko Maeda, Kenji Hara, Minoru Kobayashi, Masanobu Abe

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


As it is becoming more common for various handheld devices to be equipped with a camera, applications that use image recognition are increasing. Therefore, improving the usability of these devices by enhancing their image capture characteristics is becoming more important. We present ClearPlate - a new optical unit for image capture. It has a physically transparent viewfinder through which the user can observe the target directly without offset; the framed image is captured by the built-in camera. We also present a user study that evaluates ClearPlate performance in the 2D barcode acquisition task. Results show that ClearPlate significantly outperforms the camera-phone-based approach with regard to 2D barcode acquisition.

Original languageEnglish
Title of host publicationCHI 2011 - 29th Annual CHI Conference on Human Factors in Computing Systems, Conference Proceedings and Extended Abstracts
PublisherAssociation for Computing Machinery
Number of pages4
ISBN (Print)9781450302289
Publication statusPublished - 2011

Publication series

NameConference on Human Factors in Computing Systems - Proceedings


  • 2D barcode
  • Camera
  • Image recognition
  • Paper interface
  • See-through interface
  • Target acquisition

ASJC Scopus subject areas

  • Software
  • Human-Computer Interaction
  • Computer Graphics and Computer-Aided Design


Dive into the research topics of '"ClearPlate" for capturing printed information: A scanner and viewfinder in one optical unit'. Together they form a unique fingerprint.

Cite this