Description


Multi-touch sensing over interactive surfaces is a pervasive feature present in mobile, PC and large form factor displays. It is an area of research that is changing and developing into one of the most important core issues regarding stability and growth in how users interact with applications. Our research focuses on producing a versatile technology both low-cost and user centric minded allowing for creative and novel applications using gesture and object detection.

Focused Areas of Research

  • Infrared-based multi-touch sensing
  • Mobile and large display platforms (Projection and LCD displays)
  • Finger and Hand Tracking (i.e. gesture support)
  • Unsupervised Object Detection using blob shape matching techniques

Multi-touch Hardware and Process


Laser Light Module Dual Plane Interaction Method


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[Process for Finger and Object Detection]



  • LLP+: Blob Detection


  • LLP+: Touch Detection and Stability Test

  • Publications


  • J.H Park, Tackdon Han, "LLP+: Multi-Touch Sensing Using Cross Plane Infrared Laser Light for Interactive Based Displays," Proceedings of the 37th International Conference and Exhibition on Computer Graphics and Interactive Techniques (Siggraph 2010), July 2010. (Poster)

  • Jae-Hee Park, Jonghoon Seo, Dongchul Kim, Tackdon Han, “Using LLP+ for Large Interactive Display”, Journal of Interacting with Computers, Elsevier, December 2011. (Awaiting publication)

  • Jae-Hee Park, Tackdon Han “Unsupervised Method of detecting Objects on Interactive Surfaces using Shape Matching Algorithms”, Journal of Interacting with Computers, Elsevier, December 2011. (Awaiting publication)

  • (Korea Patent), “상호작용을 기반으로하는 디스플레이를 위하여 크로스 플레인 적외선 레이저를 사용한 멀티 터치 센싱”, November 17, 2010.