Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
권호 표지

Two camera based touch screen system for human computer interaction

인간과 컴퓨터 상호 작용을 위한 2개의 카메라 기반의 터치 스크린 시스템

  • Kim, Jin-Kuk (Department of Electronics and Computer Engineering, Korea University) ;
  • Min, Kyung-Won (Digital Media Research Center, Korea Electronics Technology Institute) ;
  • Ko, Han-Seok (Department of Electronics and Computer Engineering, Korea University)
  • 김진국 (고려대학교 전자컴퓨터 공학과) ;
  • 민경원 (전자부품 연구원 디지털미디어 연구센터) ;
  • 고한석 (고려대학교 전자컴퓨터 공학과)
  • Published : 2006.06.21
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we propose a vision based system employing two cameras to provide effective touch screen function. The two main processes - determining touch (or no-touch) and contact location of screen plane - are essential for enabling touch screen function. First region of interest is found by using color characteristic and histogram for determining the contact mode. Second, if the hand touches the mirror, the fingertip point in image is found using the correlation coefficient based on the mirror attribute. Subsequently, the fingertip coordinate in image is transformed to the location in mirror plane by using four predefined points (termed as four-point method) and bilinear transform. Representative experimental results show that the proposed system is suited to touch screen.

Keywords