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Integrating Communication with Interaction: Computer Vision Challenges for Interactive and Intelligent Environments
Found in: Computer Vision for Interactive and Intelligent Environment
By Jeremy R. Cooperstock
Issue Date:November 2005
pp. 151-161
Interactive, Intelligent Environments involve a convergence of various research themes, including high-fidelity visualization, communication, gestural expression, and virtualized reality systems. Recent advances in real-time acquisition, transmission, and ...
Shadow Removal in Front Projection Environments Using Object Tracking
Found in: Computer Vision and Pattern Recognition, IEEE Computer Society Conference on
By Samuel Audet, Jeremy R. Cooperstock
Issue Date:June 2007
pp. 1-8
When an occluding object, such as a person, stands between a projector and a display surface, a shadow results. We can compensate by positioning multiple projectors so they produce identical and overlapping images and by using a system to locate shadows. E...
Requirements for Camera Calibration: Must Accuracy Come with a High Price?
Found in: Applications of Computer Vision and the IEEE Workshop on Motion and Video Computing, IEEE Workshop on
By Wei Sun, Jeremy R. Cooperstock
Issue Date:January 2005
pp. 356-361
Since a large number of vision applications rely on the mapping between 3D scenes and their corresponding 2D camera images, an important practical consideration for researchers is, what are the major determinants of camera calibration accuracy and what acc...
Probabilistic Tracking of Pedestrian Movements via In-Floor Force Sensing
Found in: Computer and Robot Vision, Canadian Conference
By Rishi Rajalingham, Yon Visell, Jeremy R. Cooperstock
Issue Date:June 2010
pp. 143-150
This article presents a probabilistic approach to the tracking and estimation of the lower body posture of users moving on foot over an instrumented floor surface. The latter consists of an array of low-cost force platforms providing intermittent foot-floo...
Interaction capture in immersive virtual environments via an intelligent floor surface
Found in: Virtual Reality Conference, IEEE
By Yon Visell,Alvin Law,Jessica Ip,Severin Smith,Jeremy R Cooperstock
Issue Date:March 2010
pp. 313-314
We present techniques to enable users to interact on foot with simulated natural ground surfaces, such as soil or ice, in immersive virtual environments. Position and force estimates from in-floor force sensors are used to synthesize plausible auditory and...
Contact sensing and interaction techniques for a distributed, multimodal floor display
Found in: 3D User Interfaces
By Yon Visell, Severin Smith, Alvin Law, Rishi Rajalingham, Jeremy R Cooperstock
Issue Date:March 2010
pp. 75-78
This paper presents a novel interface and set of techniques enabling users to interact via the feet with augmented floor surfaces. The interface consists of an array of instrumented floor tiles distributed over an area of several square meters. Intrinsic f...
Touch Is Everywhere: Floor Surfaces as Ambient Haptic Interfaces
Found in: IEEE Transactions on Haptics
By Yon Visell, Alvin Law, Jeremy R. Cooperstock
Issue Date:July 2009
pp. 148-159
Floor surfaces are notable for the diverse roles that they play in our negotiation of everyday environments. Haptic communication via floor surfaces could enhance or enable many computer-supported activities that involve movement on foot. In this paper, we...
Toward iconic vibrotactile information display using floor surfaces
Found in: World Haptics Conference
By Yon Visell, Alvin Law, Jeremy R. Cooperstock
Issue Date:March 2009
pp. 267-272
This paper presents our preliminary research on haptic displays integrated in floor surfaces. We emphasize potential roles for the latter as vibrotactile communication channels that might be seamlessly integrated in everyday environments. We describe the i...
Tech-note: Multimodal feedback in 3D target acquisition
Found in: 3D User Interfaces
By Dalia El-Shimy, Georgios Marentakis, Jeremy R. Cooperstock
Issue Date:March 2009
pp. 95-98
We investigated dynamic target acquisition within a 3D scene, rendered on a 2D display. Our focus was on the relative effects of specific perceptual cues provided as feedback. Participants were asked to use a specially designed input device to control the ...
Generic Real-Time Tracking Method on Semi-Dynamic Scenes
Found in: Pattern Recognition, International Conference on
By Francois Cayouette, Jeremy R. Cooperstock
Issue Date:August 2006
pp. 711-714
This paper describes a tracking method capable of following multiple targets for a generic scene in real-time. The tracker has no a priori knowledge of the objects and does not know how many objects will be present in the scene. The tracker uses straight-f...
A New Photo Consistency Test for Voxel Coloring
Found in: Computer and Robot Vision, Canadian Conference
By Jianfeng Yin, Jeremy R. Cooperstock
Issue Date:May 2005
pp. 566-570
Volumetric scene reconstruction is an important task for many vision applications. Most voxel coloring or space carving techniques required for this purpose suffer from the coupled problems of visibility and photo consistency. We propose a new photo consis...
High-Resolution Video Synthesis from Mixed-Resolution Video Based on the Estimate-and-Correct Method
Found in: Applications of Computer Vision and the IEEE Workshop on Motion and Video Computing, IEEE Workshop on
By St├ęphane Pelletier, Stephen P. Spackman, Jeremy R. Cooperstock
Issue Date:January 2005
pp. 172-177
A technique for increasing the frame rate of CMOS video cameras is presented. The method uses the non-destructive readout capabilities of CMOS imagers to obtain low-speed, high-resolution frames and high-speed, low-resolution frames simultaneously. The alg...
Arm Gesture Detection in a Classroom Environment
Found in: Applications of Computer Vision, IEEE Workshop on
By Jie Yao, Jeremy R. Cooperstock
Issue Date:December 2002
pp. 153
Detecting human arm motion in a typical classroom environment is a challenging task due to the noisy and highly dynamic background, varying light conditions, as well as the small size and multiple number of possible matched objects. A robust vision system ...
Automated Feature Registration for Robust Tracking Methods
Found in: Pattern Recognition, International Conference on
By Shawn Arseneau, Jeremy R. Cooperstock
Issue Date:August 2002
pp. 21078
Tracking people within a scene has been a longstanding challenge in the field of computer vision. A common approach involves matching the background against the incoming video stream, with the assumption that any unmatched pixels belong to the people being...
Listen to it yourself!: evaluating usability of what's around me? for the blind
Found in: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '13)
By Adriana Olmos, Jeffrey R. Blum, Jeremy R. Cooperstock, Sabrina A. Panëels
Issue Date:April 2013
pp. 2107-2116
Although multiple GPS-based navigation applications exist for the visually impaired, these are typically poorly suited for in-situ exploration, require cumbersome hardware, lack support for widely accessible geographic databases, or do not take advantage o...
Overcoming limitations of the trackpad for 3d docking operations
Found in: CHI '13 Extended Abstracts on Human Factors in Computing Systems (CHI EA '13)
By David Glesser, François Bérard, Jeremy R. Cooperstock
Issue Date:April 2013
pp. 1239-1244
From notebook trackpads to mobile phones to tabletop surface computing, multitouch input surfaces have become one of the most dominant interfaces for human-computer interaction. Although these are clearly effective for interaction with 2D graphical user in...
Multiple angle viewer for remote medical training
Found in: Proceedings of the second ACM international workshop on Multimedia technologies for distance leaning (MTDL '10)
By Adriana Olmos, Jeremy R. Cooperstock, Kevin Lachapelle
Issue Date:October 2010
pp. 19-24
We present the design of an interface for a camera array that will enable mentoring and monitoring of dissections and surgical procedures for medical instructors and students. While considerable research has investigated the recording and broadcasting of s...
Multimodal floor for immersive environments
Found in: ACM SIGGRAPH 2009 Emerging Technologies (SIGGRAPH '09)
By Alvin W. Law, Benjamin V. Peck, Jeremy R. Cooperstock, Jessica W. Ip, Paul G. Kry, Yon Visell
Issue Date:August 2009
pp. 1-1
We have developed an interactive system that allows untethered users to experience walking on virtual ground surfaces resembling natural materials. The demonstration consists of a multimodal floor interface for providing auditory, tactile and visual feedba...
Beating the limitations of camera-monitor mediated telepresence with extra eyes
Found in: Proceedings of the SIGCHI conference on Human factors in computing systems: common ground (CHI '96)
By Jeremy R. Cooperstock, Kimiya Yamaashi, Tracy Narine, William Buxton
Issue Date:April 1996
pp. 50-57
We present an approach to control information flow in object-oriented systems. The decision of whether an informatin flow is permitted or denied depends on both the authorizations specified on the objects and the process by which information is obtained an...
Reactive environments
Found in: Communications of the ACM
By Jeremy R. Cooperstock, Kenneth C. Smith, Sidney S. Fels, William Buxton
Issue Date:January 1988
pp. 65-73
The online Risks Forum has long been a hotbed for discussions of the relative merits of openness relating to the dissemination of knowledge about security vulnerabilities. The debate has now been rekindled, and is summarized here.