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Low-cost multi-touch sensing through frustrated total internal reflection

Jefferson Y. Han
2005 Proceedings of the 18th annual ACM symposium on User interface software and technology - UIST '05  
While touch sensing is commonplace for single points of contact, it is still difficult and/or expensive to construct a touch sensor that can register multiple simultaneous points of contact."  ...  "While touch sensing is commonplace for single points of contact, it is still difficult and/or expensive to construct a touch sensor that can register multiple simultaneous points of contact."  ...  They can also be arranged in a matrix confi guration with ulti-touch interaction using our FTIR technique Low Cost Multi-Touch Sensing We present a simple technique for robust multi-touch sensing at  ... 
doi:10.1145/1095034.1095054 dblp:conf/uist/Han05 fatcat:qytp3lbakrh2hbjeeyj6vhc2uy

Low-Cost Malleable Surfaces with Multi-Touch Pressure Sensitivity

J. David Smith, T.C. Nicholas Graham, David Holman, Jan Borchers
2007 Second Annual IEEE International Workshop on Horizontal Interactive Human-Computer Systems (TABLETOP'07)  
The technique is an extension of previous work based on frustrated total internal reflection.  ...  We present a novel technique for the construction of a malleable surface with multi-touch sensitivity. The sensor is pressure sensitive and responds to near zero-force touch from any object.  ...  FTIR-Based Multi-touch Sensing Han proposed a low-cost, simple FTIR-based sensor.  ... 
doi:10.1109/tabletop.2007.28 dblp:conf/tabletop/SmithGHB07 fatcat:2smh265x65d5pcixqblmkdgci4

A Survey on the Development of Multi-touch Technology

Rong Chang, Feng Wang, Pengfei You
2010 2010 Asia-Pacific Conference on Wearable Computing Systems  
Furthermore the FTIR (Frustrated Total Internal Reflection) and DI (Diffused Illumination) which are based on computer vision multi-touch technology are highlighted.  ...  It is important for studying the technology of detection and tracking touch-point in multi-touch.  ...  Here are two kinds of computer vision and optical-based Multi-touch systems. Frustrated Total Internal Reflection (FTIR) Frustrated Total Internal Reflection is a kind of optical phenomenon.  ... 
doi:10.1109/apwcs.2010.99 dblp:conf/apwcs/ChangWY10 fatcat:lymq7uvhqval5lc5weopc6rrja

Building Interactive Multi-Touch Surfaces

Johannes Schöning, Jonathan Hook, Nima Motamedi, Patrick Olivier, Florian Echtler, Peter Brandl, Laurence Muller, Florian Daiber, Otmar Hilliges, Markus Loechtefeld, Tim Roth, Dominik Schmidt (+1 others)
2009 Journal of Graphics GPU and Game Tools  
Hardware implementations of multitouch interaction such as frustrated total internal reflection (FTIR) and diffused illumination (DI) have allowed for the low-cost development of surfaces.  ...  We draw upon our extensive experience as developers of multi-touch technology to provide practical advice in relation to building and deploying applications upon multi-touch surfaces.  ...  However, it was Han's 2005 presentation [Han 05 ] of a low-cost camera-based multi-touch sensing technique based upon frustrated total internal reflection (FTIR) that truly highlighted the potential role  ... 
doi:10.1080/2151237x.2009.10129285 fatcat:5pawhjamhfefviddbzg7pccz3e

Vision-Based Finger Detection, Tracking, and Event Identification Techniques for Multi-Touch Sensing and Display Systems

Yen-Lin Chen, Wen-Yew Liang, Chuan-Yen Chiang, Tung-Ju Hsieh, Da-Cheng Lee, Shyan-Ming Yuan, Yang-Lang Chang
2011 Sensors  
This study presents efficient vision-based finger detection, tracking, and event identification techniques and a low-cost hardware framework for multi-touch sensing and display applications.  ...  Experimental results demonstrate that the proposed vision-based finger detection, tracking, and event identification system is feasible and effective for multi-touch sensing applications in various operational  ...  Han [28] proposed a Frustrated Total Internal Reflection (FTIR) technique, which is inexpensive and easy to implement.  ... 
doi:10.3390/s110706868 pmid:22163990 pmcid:PMC3231698 fatcat:rkhe5zzszbet3p2usgzjkoausu

14.3: Illumination Design of a Multi-Touch Sensing Projection Screen for Augmented Virtual Environments

Sheng Liu, Hong Hua, Chunyu Gao
2008 SID Symposium Digest of Technical Papers  
The paper presents the illumination engineering for a low-cost multi-touch projection screen.  ...  A similar method based on frustrated total internal reflection (FTIR) was presented by Han for multi-touch sensing [6] .  ...  The technology may be applied to rear projection displays for optical multi-touch sensing. 6. 14.3 / S.  ... 
doi:10.1889/1.3069512 fatcat:qybg6yysgrdrlpjjldtd3q5h5e


Ramon Hofer, Daniel Naeff, Andreas Kunz
2009 Proceedings of the 3rd International Conference on Tangible and Embedded Interaction - TEI '09  
ABSTRACT In this paper, we suggest a new way to add multi-touch capabilities to an LC-screen. For this, FTIR and IR-sensing behind the LC-screen will be combined.  ...  Using a large infrared sensor array mounted behind the LC-matrix, infrared light in front of the screen, which is strong enough to pass through the LCscreen's components, can be detected The FTIR-technology  ...  FTIR (frustrated total internal reflection) If light is coupled into a thin acrylic glass plate from the side, most of the rays are internally totally reflected and do not exit the plate.  ... 
doi:10.1145/1517664.1517730 dblp:conf/tei/HoferNK09 fatcat:of4gfnrgh5cxhcfyyd565pr4v4

Enhancing Multi-user Interaction with Multi-touch Tabletop Displays Using Hand Tracking

K. C. Dohse, Thomas Dohse, Jeremiah D. Still, Derrick J. Parkhurst
2008 First International Conference on Advances in Computer-Human Interaction  
A rear-projection multi-touch tabletop display was augmented with hand tracking utilizing computer vision techniques.  ...  To solve this problem, we combine touch detection and hand tracking techniques in order to allow multiple users to simultaneously interact with the display without interference.  ...  System We developed a rear-projection tabletop display with multi-touch sensing capabilities using the principles of frustrated total internal reflection (see Figure 1 ).  ... 
doi:10.1109/achi.2008.11 dblp:conf/achi/DohseDSP08 fatcat:2bmgrvdqx5aozhkbjnyc3jmyoi

Process Pad

Jain Kim, Colin Meltzer, Shima Salehi, Paulo Blikstein
2011 Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces - ITS '11  
This paper introduces Process Pad, an interactive, low-cost multi-touch tabletop platform designed to capture students' thought process and facilitate their explanations.  ...  The way we implemented the finger touch surface, considering cost-minimization issues, was by using Frustrated Total Internal Reflection (FTIR) technique [7] .  ...  INTRODUCTION This paper introduces Process Pad, an interactive, low-cost multi-touch tabletop platform designed to capture students' thought process and facilitate their explanations.  ... 
doi:10.1145/2076354.2076411 dblp:conf/tabletop/KimMSB11 fatcat:bvv2heqg45aijjz2zy73ybrky4

TACTUS: A Hardware and Software Testbed for Research in Multi-Touch Interaction [chapter]

Paul Varcholik, Joseph J. Laviola, Denise Nicholson
2009 Lecture Notes in Computer Science  
This paper presents the TACTUS Multi-Touch Research Testbed, a hardware and software system for enabling research in multi-touch interaction.  ...  This includes a comprehensive description of the vision-based image processing pipeline, developed for the TACTUS software library, which makes surface interactions available to multi-touch applications  ...  In 2005, Han presented work on constructing low-cost multi-touch surfaces using Frustrated Total Internal Reflection [2] . Much of our hardware is a derivative of Han's work.  ... 
doi:10.1007/978-3-642-02577-8_57 fatcat:hi65xyx5ivamfks7hcve5lwwwu

Optimization of a Multi-Touch Sensing Device for Biomedical Applications

Septimiu Crisan, Ioan Gavril Tarnovan
2013 Advanced Engineering Forum  
used in dedicated medical visualization or sensing multi-touch software applications.  ...  Based on previous research concerning multi-touch systems and their potential usefulness in the medical field, this paper describes the optimization process of a multi-touch sensing device for biomedical  ...  POSDRU/89/1.5/S/52603, project co-funded by the European Social Fund through Sectoral Operational Programme Human Resources Development 2007-2013.  ... 
doi:10.4028/ fatcat:oiroulhjenhs7j5avespq7e2pi

Implementation of Context-aware Digital Signage System based on Mobile CPU Platform

Euiseok Nahm
2015 Indian Journal of Science and Technology  
We developed a low-power low-cost digital signage system and a remote content management program based on web server.  ...  For resolving this problem we used the Smartphone mounted in ARM Cortex family of multi-core processor-based mobile platform.  ...  : Multi-touch Interface Technology Table Setting Display Technology Since refining the FTIR (Frustrated Total Internal Reflection) sensing technique, we've been experimenting with a wide variety of  ... 
doi:10.17485/ijst/2015/v8i14/73191 fatcat:4d4xjwgwnbfyzmeghp577gmcqa

Creating malleable interactive surfaces using liquid displacement sensing

Otmar Hilliges, David Kim, Shahram Izadi
2008 2008 3rd IEEE International Workshop on Horizontal Interactive Human Computer Systems  
We present a new approach for rapidly prototyping multi-touch and object sensing surfaces. It works by liquid displacement inside a malleable projection surface.  ...  The system provides both touch and pressure information and a distinct organic quality when touched.  ...  This approach provides an even easier mechanism to build interactive surfaces than techniques such as frustrated total internal reflection (FTIR) [3] , requiring no Infrared (IR) lighting, no mounting  ... 
doi:10.1109/tabletop.2008.4660199 dblp:conf/tabletop/HilligesKI08 fatcat:lnma6x5ekbeojf3ryst4cmvm74

Poster: Interscopic multi-touch surfaces: Using bimanual interaction for intuitive manipulation of spatial data

Johannes Schoning, Frank Steinicke, Antonio Kruger, Klaus Hinrichs
2009 2009 IEEE Symposium on 3D User Interfaces  
multi-touch surfaces (iMUTS).  ...  Multi-touch interaction has received considerable attention in the last few years, in particular for non-immersive, natural 2D interaction.  ...  Recently the FTIR (frustrated total internal reflection) technology and its cheap footprint [8] has accelerated the usage of multi-touch in the last three years.  ... 
doi:10.1109/3dui.2009.4811219 dblp:conf/3dui/SchoningSKH09 fatcat:w63fetlcivdbfdtkrqrpdxcxgq


Steve Hodges, Shahram Izadi, Alex Butler, Alban Rrustemi, Bill Buxton
2007 Proceedings of the 20th annual ACM symposium on User interface software and technology - UIST '07  
Figure 1 : ThinSight enables multi-touch sensing using novel hardware embedded behind an LCD. Left: photo manipulation using multi-touch interaction on a regular laptop.  ...  With our approach, fingertips and hands are clearly identifiable through the display, allowing zero force multi-touch interaction.  ...  Han [6] describes a straightforward yet powerful technique for enabling high-resolution multi-touch sensing on rear-projected surfaces based on frustrated total internal reflection.  ... 
doi:10.1145/1294211.1294258 dblp:conf/uist/HodgesIBRB07 fatcat:42fnlmpewvbmremcwiltzzuiua
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