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Displaying 1-36 out of 36 total
Guest Editorial for Special Section on Consumer Electronics
Found in: IEEE Transactions on Haptics
By Danny Grant,Seungmoon Choi,Reinhard Moeller
Issue Date:January 2012
pp. 4-5
The articles in this special section are devoted to the topic of consumer electronics.
 
System improvements in Mobile Haptic Interface
Found in: World Haptics Conference
By In Lee, Inwook Hwang, Kyung-Lyoung Han, Oh Kyu Choi, Seungmoon Choi, Jin S. Lee
Issue Date:March 2009
pp. 109-114
A Mobile Haptic Interface (MHI), a force-feedback haptic interface with a mobile base, allows to render very large virtual objects in a safe and portable manner. In this paper, we present a novel MHI system, featured with: 1) extended horizontal workspace ...
 
Erratum to
Found in: IEEE Transactions on Haptics
By Inwook Hwang,Hyeseon Lee,Seungmoon Choi
Issue Date:July 2014
pp. 411
The authors of
 
Saliency-Driven Real-Time Video-to-Tactile Translation
Found in: IEEE Transactions on Haptics
By Myongchan Kim,Sungkil Lee,Seungmoon Choi
Issue Date:July 2014
pp. 394-404
Tactile feedback coordinated with visual stimuli has proven its worth in mediating immersive multimodal experiences, yet its authoring has relied on content artists. This article presents a fully automated framework of generating tactile cues from streamin...
 
Rendering Virtual Tumors in Real Tissue Mock-Ups Using Haptic Augmented Reality
Found in: IEEE Transactions on Haptics
By Seokhee Jeon,Seungmoon Choi,Matthias Harders
Issue Date:January 2012
pp. 77-84
Haptic augmented reality (AR) is an emerging research area, which targets the modulation of haptic properties of real objects by means of virtual feedback. In our research, we explore the feasibility of using this technology for medical training systems. A...
 
Effect of Active and Passive Haptic Sensory Information on Memory for 2D Sequential Selection Task
Found in: International Symposium on Ubiquitous Virtual Reality
By Hojin Lee,Gabjong Han,In Lee,Sunghoon Yim,Kyungpyo Hong,Seungmoon Choi
Issue Date:July 2011
pp. 52-54
This paper introduces an education system for typical assembly procedures that provides various haptic sensory information including active and passive haptic feedbacks. Using the system, we implemented four kinds of training methods and experimentally eva...
 
Vibrotactile Feedback for Information Delivery in the Vehicle
Found in: IEEE Transactions on Haptics
By Jonghyun Ryu, Jaemin Chun, Gunhyuk Park, Seungmoon Choi, Sung H. Han
Issue Date:April 2010
pp. 138-149
As technology advances, more functions have been, and continue to be added to the vehicle, resulting in increased needs for improved user interfaces. In this paper, we investigate the feasibility of using vibrotactile feedback for in-vehicle information de...
 
Graphical authoring tools for vibrotactile patterns
Found in: World Haptics Conference
By Jaebong Lee, Jonghyun Ryu, Seungmoon Choi
Issue Date:March 2009
pp. 388-389
This paper presents two graphical authoring tools, posVibEditor and VibScoreEditor, developed for the intuitive and convenient design of vibrotactile patterns. The posVibEditor is for the signal-level design and supports drag-and-drop design paradigm, XML ...
 
Vibrotactile score: A score metaphor for designing vibrotactile patterns
Found in: World Haptics Conference
By Jaebong Lee, Jonghyun Ryu, Seungmoon Choi
Issue Date:March 2009
pp. 302-307
Despite the plethora of vibrotactile applications that already have begun to impact our everyday life, how to design vibrotactile patterns easily and efficiently remains to be a challenge. In this paper, we introduce a vibrotactile score, an effective mean...
 
Haptic augmented reality: Modulation of real object stiffness
Found in: World Haptics Conference
By Seokhee Jeon, Seungmoon Choi
Issue Date:March 2009
pp. 384-385
Haptic augmented reality allows a user to feel the sensation of a real object augmented with synthetic haptic stimuli created by a haptic interface. For example, the user feels a soft sponge as if it is a stiffer rubber. This demonstration presents a hapti...
 
Real-Time Depth-of-Field Rendering Using Anisotropically Filtered Mipmap Interpolation
Found in: IEEE Transactions on Visualization and Computer Graphics
By Sungkil Lee, Gerard Jounghyun Kim, Seungmoon Choi
Issue Date:May 2009
pp. 453-464
This article presents a real-time GPU-based post-filtering method for rendering acceptable depth-of-field effects suited for virtual reality. Blurring is achieved by nonlinearly interpolating mipmap images generated from a pinhole image. Major artifacts co...
 
Perceived Magnitudes of Vibrations Transmitted Through Mobile Device
Found in: Haptic Interfaces for Virtual Environment and Teleoperator Systems, International Symposium on
By Jonghyun Ryu, Jaehoon Jung, Seungmoon Choi
Issue Date:March 2008
pp. 139-140
In this paper, we report the design and results of a psychophysical experiment wherein the perceived magnitudes of vibrations with various frequencies (20
 
Haptizing Surface Topography with Varying Stiffness Based on Force Constancy: Extended Algorithm
Found in: Haptic Interfaces for Virtual Environment and Teleoperator Systems, International Symposium on
By Jaeyoung Cheon, Inwook Hwang, Gabjong Han, Seungmoon Choi
Issue Date:March 2008
pp. 193-200
This article introduces a novel haptization method for rendering surface topography with varying stiffness via a force-feedback haptic interface. Previously, we showed that when surface topography with varying stiffness is rendered with the conventional pe...
 
Haptic Weather
Found in: Haptic Interfaces for Virtual Environment and Teleoperator Systems, International Symposium on
By Chaehyun Lee, B.D. Adelstein, Seungmoon Choi
Issue Date:March 2008
pp. 473-474
We overview a new approach for displaying meteorological information in which weather features extracted from weather maps are rendered haptically. This weather display enables users to feel the weather at the geographic locality indicated by the position ...
 
Perceptual Issues in Haptic Digital Watermarking
Found in: IEEE Multimedia
By Domenico Prattichizzo, Mauro Barni, Gloria Menegaz, Alessandro Formaglio, Hong Z. Tan, Seungmoon Choi
Issue Date:July 2007
pp. 84-91
The growing interest in haptic applications suggests that haptic digital media will soon become widely available, and the need will arise to protect digital haptic data from misuse. In this article, we present our study and findings on psychophysical exper...
 
Mechanical Impedance of the Hand Holding a Spherical Tool at Threshold and Suprathreshold Stimulation Levels
Found in: World Haptics Conference
By Ali Israr, Seungmoon Choi, Hong Z. Tan
Issue Date:March 2007
pp. 56-60
We report mechanical impedance of the hand for sinusoidal stimulation at the threshold and suprathreshold levels in the frequency range of 10-500 Hz delivered through a ball-shaped interface. The participants held the ball mounted on a minishaker in a way ...
 
Haptizing a Surface Height Change with Varying Stiffness Based on Force Constancy: Effect of Surface Normal Render
Found in: World Haptics Conference
By Jaeyoung Cheon, Seungmoon Choi
Issue Date:March 2007
pp. 84-89
This work has been motivated by our prior efforts for perceptualizing the scientific data sets of surface topography and stiffness distribution measured with a scanning probe microscope. Previously, we showed that the surface topography information with va...
 
Portable Haptic Display for Large Immersive Virtual Environments
Found in: Haptic Interfaces for Virtual Environment and Teleoperator Systems, International Symposium on
By Enkhtuvshin Dorjgotov, Seungmoon Choi, Steven R. Dunlop, Gary R. Bertoline
Issue Date:March 2006
pp. 48
This paper introduces Portable Haptic Display (PHD), a novel platform-independent haptic rendering system that can be conveniently integrated into a large immersive virtual environment while maximizing the individual reusability of haptic interfaces and vi...
 
Perceptibility of Haptic Digital Watermarking of Virtual Textures
Found in: World Haptics Conference
By Domenico Prattichizzo, Mauro Barni, Hong Z. Tan, Seungmoon Choi
Issue Date:March 2005
pp. 50-55
Digital watermarking refers to the process of embedding a digital code into an image, video, printed document or audio media. The code should not interfere with the normal use of the media but can be recovered later. With the growing interest in haptic int...
 
Discrimination of Virtual Haptic Textures Rendered with Different Update Rates
Found in: World Haptics Conference
By Seungmoon Choi, Hong Z. Tan
Issue Date:March 2005
pp. 114-119
This paper addresses the discriminability of virtual haptic textures rendered with different update rates. Two psychophysical experiments were conducted. In the first experiment, we examined the pairwise discriminability of textured surfaces rendered with ...
 
Multi-Modal Perceptualization of Volumetric Data and Its Application to Molecular Docking
Found in: World Haptics Conference
By Ross Maciejewski, Seungmoon Choi, David S. Ebert, Hong Z. Tan
Issue Date:March 2005
pp. 511-514
In this paper, we present a multi-modal data perceptualization system used to analyze the benefits of augmenting a volume docking problem with other perceptual cues, particularly stereoscopic vision and haptic rendering. This work focuses on the problem of...
 
Toward Realistic Haptic Rendering of Surface Textures
Found in: IEEE Computer Graphics and Applications
By Seungmoon Choi, Hong Z. Tan
Issue Date:March 2004
pp. 40-47
<p>New sophisticated haptic-rendering algorithms let users experience virtual objects through touch. The authors systematically investigate the unrealistic behavior of virtual haptic textures.</p>
 
An Experimental Study of Perceived Instability During Haptic Texture Rendering: Effects of Collision Detection Algorithm
Found in: Haptic Interfaces for Virtual Environment and Teleoperator Systems, International Symposium on
By Seungmoon Choi, Hong Z. Tan
Issue Date:March 2003
pp. 197
This paper presents a quantitative characterization of the instability that a human user often experiences while interacting with a virtual textured surface rendered with a force-reflecting haptic interface. Psychophysical experiments were conducted to mea...
 
An Analysis of Perceptual Instability During Haptic Texture Rendering
Found in: Haptic Interfaces for Virtual Environment and Teleoperator Systems, International Symposium on
By Seungmoon Choi, Hong Z. Tan
Issue Date:March 2002
pp. 129
This paper investigates the problem of perceived instability during haptic texture rendering. We focus on the perceptual analysis of the stability of textured surfaces rendered with a force-reflecting device. The method of limits is used to assess the dete...
 
Discrimination of Virtual Environments Under Visual and Haptic Rendering Delays
Found in: Frontiers in the Convergence of Bioscience and Information Technologies
By In Lee, Seungmoon Choi
Issue Date:October 2007
pp. 554-562
Many virtual reality systems have a distributed structure for certain purposes such as more computational power, tele-presence, collaboration, and portability. However, network delays are inevitable in the distributed structure and often make sensory infor...
 
Consonance of Vibrotactile Chords
Found in: IEEE Transactions on Haptics
By Yongjae Yoo, Inwook Hwang, Seungmoon Choi
Issue Date:January 2014
pp. 3-13
This paper is concerned with the perception of complex vibrotactile stimuli in which a few sinusoidal vibrations with different frequencies are superimposed. We begin with an observation that such vibrotactile signals are analogous to musical chords in whi...
   
Topography Compensation for Haptization of a Mesh Object and Its Stiffness Distribution
Found in: IEEE Transactions on Haptics
By Sunghoon Yim,Seokhee Jeon,Seungmoon Choi
Issue Date:December 2013
pp. 1
This work was motivated by the need for perceptualizing nano-scale scientific data, e.g., those acquired by a scanning probe microscope, where collocated topography and stiffness distribution of a surface can be measured. Previous research showed that when...
 
Perceptual Analysis of Vibrotactile Flows on a Mobile Device
Found in: IEEE Transactions on Haptics
By Jongman Seo, Seungmoon Choi
Issue Date:October 2013
pp. 522-527
No summary available.
 
Real-Time Dual-Band Haptic Music Player for Mobile Devices
Found in: IEEE Transactions on Haptics
By Inwook Hwang, Hyeseon Lee, Seungmoon Choi
Issue Date:July 2013
pp. 340-351
We introduce a novel dual-band haptic music player for real-time simultaneous vibrotactile playback with music in mobile devices. Our haptic music player features a new miniature dual-mode actuator that can produce vibrations consisting of two principal fr...
 
Vibrotactile Perceived Intensity for Mobile Devices as a Function of Direction, Amplitude, and Frequency
Found in: IEEE Transactions on Haptics
By Inwook Hwang, Jongman Seo, Myongchan Kim, Seungmoon Choi
Issue Date:July 2013
pp. 352-362
Vibrotactile rendering is an emerging interaction method for information transmission in mobile devices, replacing or supplementing visual and auditory displays. To design effective vibrotactile actuators or display algorithms, an understanding of the perc...
 
Real-time perception-level translation from audio signals to vibrotactile effects
Found in: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '13)
By Jaebong Lee, Seungmoon Choi
Issue Date:April 2013
pp. 2567-2576
In this paper, we propose a real-time perception-level audio-to-vibrotactile translation algorithm. Unlike previous signal-level conversion methods, our algorithm considers only perceptual characteristics, such as loudness and roughness, of audio and tacti...
     
Improving vibrotactile pattern identification for mobile devices using perceptually transparent rendering
Found in: Proceedings of the 12th international conference on Human computer interaction with mobile devices and services (MobileHCI '10)
By Chil-Woo Lee, Jonghyun Ryu, Seungmoon Choi
Issue Date:September 2010
pp. 257-260
At present, vibration feedback is widely used to improve the limited user interface of a mobile device. Despite recent advances of miniature actuator technology, a vibration motor is still a dominant actuator for commercial mobile devices. In this paper, w...
     
Improving perceived hardness of haptic rendering via stiffness shifting: an initial study
Found in: Proceedings of the 16th ACM Symposium on Virtual Reality Software and Technology (VRST '09)
By Gabjong Han, Seokhee Jeon, Seungmoon Choi
Issue Date:November 2009
pp. 87-90
Rendering a stiff virtual surface using a force-feedback haptic interface has been one of the most classic and important research issues in haptics. In this paper, we present an initial study for a novel haptic rendering technique, named stiffness shifting...
     
Towards realistic haptic rendering of surface texture
Found in: ACM SIGGRAPH 2005 Courses (SIGGRAPH '05)
By Hong Tan, Seungmoon Choi
Issue Date:July 2005
pp. 52-es
We present a system, ArtNova, for 3D model design with a haptic interface. ArtNova offers the novel capability of interactively applying textures onto 3D surfaces directly by brush strokes, with the orientation of the texture determined by the stroke. Buil...
     
Toward realistic haptic rendering of surface textures
Found in: ACM SIGGRAPH 2005 Courses (SIGGRAPH '05)
By Hong Z. Tan, Seungmoon Choi
Issue Date:July 2005
pp. 125-es
The emerging science of haptic rendering consists of delivering properties of physical objects through the sense of touch. Owing to the recent development of sophisticated haptic-rendering algorithms, users can now experience virtual objects through touch ...
     
Force constancy and its effect on haptic perception of virtual surfaces
Found in: ACM Transactions on Applied Perception (TAP)
By Hong Z. Tan, Laron Walker, Ron Reifenberger, Scott Crittenden, Seungmoon Choi
Issue Date:April 2005
pp. 89-105
The force-constancy hypothesis states that the user of a force-feedback device maintains a constant penetration force when stroking virtual surfaces in order to perceive their topography. The hypothesis was developed to address a real-world data perceptual...
     
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