An Adjustment Method of a Convergence Point for Zoom-In on a Dual Lens Stereoscopic Camera

  • JongSoo Ha
  • ChaeHoon Ban
  • DaeWoong Kim
  • Tatsuro Ishii
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 235)


Recently, even non-professional photographers are using a dual lens stereoscopic camera which allows for convenient stereoscopic photography. The necessity for the research comes up, since the dual lens stereoscopic camera can cause visual discomfort during zoom-in due to the fixed convergence point. We propose a method based on which a convergence point can be adjusted to prevent visual discomfort during zoom-in for a dual lens stereoscopic camera. First, the relational model is classified into nine kinds and defined, depending on locations of focus, object, and convergence point. And then, the method to minimize visual discomfort is suggested by adjusting convergence point on the given model.


Dual lens stereoscopic camera Convergence point Auto focus Visual discomfort Zoom Binocular disparity 


  1. 1.
    Yano S, Emoto M, Mitsuhashi T (2004) Two factors in visual fatigue caused by stereoscopic HD TV images. Proc Displays 25:141–150Google Scholar
  2. 2.
    Motoki T, Isono H, Yuyama I (1995) Present status of three dimensional television research. Proc IEEE 83:1009–1021Google Scholar
  3. 3.
    Knorr S, Ide K, Kunter M, Sikora T (2012) The avoidance of visual discomfort and basic rules for producing good 3D pictures. SMPTE 7:72–79CrossRefGoogle Scholar
  4. 4.
    Shibata T, Kim J, Hoffman DM, Banks MS (2011) The zone of comfort: predicting visual discomfort with stereo displays. J Vis 11:1–29CrossRefGoogle Scholar
  5. 5.
    3D Consortium (2006) 3DC safety guidelines for popularization of human-friendly 3D, 3D ConsortiumGoogle Scholar
  6. 6.
    Ujike H (2009) Estimation of visually induced motion sickness from velocity component of moving image, virtual and mixed reality. LNCS 5622:136–142Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • JongSoo Ha
    • 1
  • ChaeHoon Ban
    • 2
  • DaeWoong Kim
    • 3
  • Tatsuro Ishii
    • 3
  1. 1.Subdivision of Broadcasting and ImageKyungnam College of Information and TechnologyBusanKorea
  2. 2.Department of Internet BusinessKosin UniversityBusanKorea
  3. 3.Faculty of Design, Department of Contents Creative DesignKyushu UniversityFukuokaJapan

Personalised recommendations