A new method for multi-finger detection using a regular diffuser

Li-Wwei Chan*, Yi Fan Chuang, Yi Wei Chia, Yi Ping Hung, Jane Hsu

*Corresponding author for this work

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

7 Scopus citations

Abstract

In this paper, we developed a fingertip finding algorithm working with a regular diffuser. The proposed algorithm works on images captured by infra-red cameras, settled on one side of the diffuser, observing human gestures taken place on the other side. With diffusion characteristics of the diffuser, we can separate finger-touch from palm-hover events when the user interacts with the diffuser. This paper contributes on: Firstly, the technique works with a regular diffuser, infra-red camera coupled with an infra-red illuminator, which is easy to deploy and cost effective. Secondly, the proposed algorithm is designed to be robust for casually illuminated surface. Lastly, with diffusion characteristics of the diffuser, we can detect finger-touch and palm-hover events, which is useful for natural user interface design. We have deployed the algorithm on a rear-projection multi-resolution tabletop, called I-M-Top. A video retrieval application using the two events on design of UIs is implemented to show its intuitiveness on the tabletop system.

Original languageEnglish
Title of host publicationHuman-Computer Interaction
Subtitle of host publicationHCI Intelligent Multimodal Interaction Environments - 12th International Conference, HCI International 2007, Proceedings
Pages573-582
Number of pages10
EditionPART 3
DOIs
StatePublished - 1 Dec 2007
Event12th International Conference on Human-Computer Interaction, HCI International 2007 - Beijing, China
Duration: 22 Jul 200727 Jul 2007

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
NumberPART 3
Volume4552 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference12th International Conference on Human-Computer Interaction, HCI International 2007
CountryChina
CityBeijing
Period22/07/0727/07/07

Keywords

  • Intuitive interaction
  • Multi-finger detection

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