Publication statistics

Pub. period:1999-2012
Pub. count:26
Number of co-authors:61


Number of publications with 3 favourite co-authors:

Robert Lin:
Neesha Subramaniam:
Shree K. Nayar:



Productive colleagues

Ramesh Raskar's 3 most productive colleagues in number of publications:

Hans-Peter Seidel:118
Scott E. Hudson:113
Hiroshi Ishii:111

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Ramesh Raskar


Publications by Ramesh Raskar (bibliography)

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Schonauer, Christian, Fukushi, Kenichiro, Olwal, Alex, Kaufmann, Hannes and Raskar, Ramesh (2012): Multimodal motion guidance: techniques for adaptive and dynamic feedback. In: Proceedings of the 2012 International Conference on Multimodal Interfaces 2012. pp. 133-140.

The ability to guide human motion through automatically generated feedback has significant potential for applications in areas, such as motor learning, human-computer interaction, telepresence, and augmented reality. This paper focuses on the design and development of such systems from a human cognition and perception perspective. We analyze the dimensions of the design space for motion guidance systems, spanned by technologies and human information processing, and identify opportunities for new feedback techniques. We present a novel motion guidance system, that was implemented based on these insights to enable feedback for position, direction and continuous velocities. It uses motion capture to track a user in space and guides using visual, vibrotactile and pneumatic actuation. Our system also introduces motion retargeting through time warping, motion dynamics and prediction, to allow more flexibility and adaptability to user performance.

© All rights reserved Schonauer et al. and/or ACM Press

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DeVincenzi, Anthony, Yao, Lining, Ishii, Hiroshi and Raskar, Ramesh (2011): Kinected conference: augmenting video imaging with calibrated depth and audio. In: Proceedings of ACM CSCW11 Conference on Computer-Supported Cooperative Work 2011. pp. 621-624.

The proliferation of broadband and high-speed Internet access has, in general, democratized the ability to commonly engage in videoconference. However, current video systems do not meet their full potential, as they are restricted to a simple display of unintelligent 2D pixels. In this paper we present a system for enhancing distance-based communication by augmenting the traditional video conferencing system with additional attributes beyond two-dimensional video. We explore how expanding a system's understanding of spatially calibrated depth and audio alongside a live video stream can generate semantically rich three-dimensional pixels containing information regarding their material properties and location. We discuss specific scenarios that explore features such as synthetic refocusing, gesture activated privacy, and spatiotemporal graphic augmentation.

© All rights reserved DeVincenzi et al. and/or their publisher

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Zizka, Jan, Olwal, Alex and Raskar, Ramesh (2011): SpeckleSense: fast, precise, low-cost and compact motion sensing using laser speckle. In: Proceedings of the 2011 ACM Symposium on User Interface Software and Technology 2011. pp. 489-498.

Motion sensing is of fundamental importance for user interfaces and input devices. In applications, where optical sensing is preferred, traditional camera-based approaches can be prohibitive due to limited resolution, low frame rates and the required computational power for image processing. We introduce a novel set of motion-sensing configurations based on laser speckle sensing that are particularly suitable for human-computer interaction. The underlying principles allow these configurations to be fast, precise, extremely compact and low cost. We provide an overview and design guidelines for laser speckle sensing for user interaction and introduce four general speckle projector/sensor configurations. We describe a set of prototypes and applications that demonstrate the versatility of our laser speckle sensing techniques.

© All rights reserved Zizka et al. and/or ACM Press

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Miaw, Dennis R. and Raskar, Ramesh (2010): Second Skin: Motion capture with actuated feedback for motor learning. In: Lok, Benjamin, Klinker, Gudrun and Nakatsu, Ryohei (eds.) IEEE Virtual Reality Conference, VR 2010 March 20-24, 2010, Waltham, Massachusetts, USA. pp. 289-290.

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Fuchs, Martin, Chen, Tongbo, Wang, Oliver, Raskar, Ramesh, Seidel, Hans-Peter and Lensch, Hendrik P. A. (2010): Real-time temporal shaping of high-speed video streams. In Computers & Graphics, 34 (5) pp. 575-584.

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Miaw, Dennis R. and Raskar, Ramesh (2009): Second skin: motion capture with actuated feedback for motor learning. In: Proceedings of ACM CHI 2009 Conference on Human Factors in Computing Systems 2009. pp. 4537-4542.

Second Skin aims to combine three-dimensional motion tracking with real-time tactile feedback for the purpose of improving users' motor-learning ability. The system tracks a user's body and limb movements as he or she is performing an action, and the user is given automatic, real-time tactile feedback to aid in the correction of movement and position errors. A number of components integral to the motion tracking and tactile feedback systems must be bound to the user's body, and as such, an important goal is to design a lightweight and minimally inhibitive wearable suit that contains all of these elements.

© All rights reserved Miaw and Raskar and/or ACM Press

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Ogata, Masato, Wada, Hiroyuki, Baar, Jeroen van and Raskar, Ramesh (2009): A Unified Calibration Method with a Parametric Approach for Wide-Field-of-View Multiprojector Displays. In: IEEE Virtual Reality Conference 2009 VR 2009 14-18 March, 2009, Lafayette, Louisiana, USA. pp. 235-236.

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Mohan, Ankit, Raskar, Ramesh and Tumblin, Jack (2008): Agile Spectrum Imaging: Programmable Wavelength Modulation for Cameras and Projectors. In Comput. Graph. Forum, 27 (2) pp. 709-717.

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Zhang, Li, Subramaniam, Neesha, Lin, Robert, Raskar, Ramesh and Nayar, Shree K. (2008): Capturing Images with Sparse Informational Pixels using Projected 3D Tags. In: IEEE Virtual Reality Conference 2008 VR 2008 8-12 March, 2008, Reno, Nevada, USA. pp. 11-18.

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Raskar, Ramesh and Furness, Tom A. (2006): Keynote speeches - The poor man's palace: special effects in the real world / Do we have six brains?. In: Fifth IEEE and ACM International Symposium on Mixed and Augmented Reality - ISMAR 2006 October 22-25, 2006, Santa Barbara, CA, USA. .

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Forlines, Clifton, Balakrishnan, Ravin, Beardsley, Paul, Baar, Jeroen van and Raskar, Ramesh (2005): Zoom-and-pick: facilitating visual zooming and precision pointing with interactive handheld projectors. In: Proceedings of the 2005 ACM Symposium on User Interface Software and Technology 2005. pp. 73-82.

Designing interfaces for interactive handheld projectors is an exiting new area of research that is currently limited by two problems: hand jitter resulting in poor input control, and possible reduction of image resolution due to the needs of image stabilization and warping algorithms. We present the design and evaluation of a new interaction technique, called zoom-and-pick, that addresses both problems by allowing the user to fluidly zoom in on areas of interest and make accurate target selections. Subtle design features of zoom-and-pick enable pixel-accurate pointing, which is not possible in most freehand interaction techniques. Our evaluation results indicate that zoom-and-pick is significantly more accurate than the standard pointing technique described in our previous work.

© All rights reserved Forlines et al. and/or ACM Press

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Setlur, Vidya, Takagi, Saeko, Raskar, Ramesh, Gleicher, Michael and Gooch, Bruce (2005): Automatic image retargeting. In: Billinghurst, Mark (ed.) MUM 2005 - Proceedings of the 4th International Conference on Mobile and Ubiquitous Multimedia December 8-10, 2005, Christchurch, New Zealand. pp. 59-68.

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Raskar, Ramesh, Beardsley, Paul A., Dietz, Paul H. and Baar, Jeroen van (2005): Photosensing wireless tags for geometric procedures. In Communications of the ACM, 48 (9) pp. 46-51.

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Bimber, Oliver and Raskar, Ramesh (2005): Spatial Augmented Reality: Merging Real and Virtual Worlds. A K Peters, Ltd

Like virtual reality, augmented reality is becoming an emerging platform in new application areas for museums, edutainment, home entertainment, research, industry, and the art communities using novel approaches which have taken augmented reality beyond traditional eye-worn or hand-held displays. In this book, the authors discuss spatial augmented reality approaches that exploit optical elements, video projectors, holograms, radio frequency tags, and tracking technology, as well as interactive rendering algorithms and calibration techniques in order to embed synthetic supplements into the real environment or into a live video of the real environment. Special Features Comprehensive overview Detailed mathematical equations Code fragments Implementation instructions Examples of Spatial AR displays

© All rights reserved Bimber and Raskar and/or A K Peters, Ltd

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Beardsley, Paul A., Baar, Jeroen van, Raskar, Ramesh and Forlines, Clifton (2005): Interaction Using a Handheld Projector. In IEEE Computer Graphics and Applications, 25 (1) pp. 39-43.

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Raskar, Ramesh, Tan, Kar-Han, Feris, Rogrio Schmidt, Turk, Matthew, Kobler, James and Yu, Jingyi (2005): Harnessing Real-World Depth Edges with Multiflash Imaging. In IEEE Computer Graphics and Applications, 25 (1) pp. 32-38.

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Lee, Johnny C., Dietz, Paul H., Maynes-Aminzade, Dan, Raskar, Ramesh and Hudson, Scott E. (2004): Automatic projector calibration with embedded light sensors. In: Proceedings of the 2004 ACM Symposium on User Interface Software and Technology 2004. pp. 123-126.

Projection technology typically places several constraints on the geometric relationship between the projector and the projection surface to obtain an undistorted, properly sized image. In this paper we describe a simple, robust, fast, and low-cost method for automatic projector calibration that eliminates many of these constraints. We embed light sensors in the target surface, project Gray-coded binary patterns to discover the sensor locations, and then prewarp the image to accurately fit the physical features of the projection surface. This technique can be expanded to automatically stitch multiple projectors, calibrate onto non-planar surfaces for object decoration, and provide a method for simple geometry acquisition.

© All rights reserved Lee et al. and/or ACM Press

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Dietz, Paul H., Raskar, Ramesh, Booth, Shane, Baar, Jeroen van, Wittenburg, Kent and Knep, Brian (2004): Multi-projectors and implicit interaction in persuasive public displays. In: Costabile, Maria Francesca (ed.) AVI 2004 - Proceedings of the working conference on Advanced visual interfaces May 25-28, 2004, Gallipoli, Italy. pp. 209-217.

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Raskar, Ramesh, Baar, Jeroen van, Willwacher, Thomas and Rao, Srinivas (2004): Quadric Transfer for Immersive Curved Screen Displays. In Comput. Graph. Forum, 23 (3) pp. 451-460.

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Bimber, Oliver, Gatesy, Stephen M., Witmer, Lawrence M., Raskar, Ramesh and Encarnacao, L. Miguel (2002): Merging Fossil Specimens with Computer-Generated Information. In IEEE Computer, 35 (9) pp. 25-30.

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Karpenko, Olga A., Hughes, John F. and Raskar, Ramesh (2002): Free-form sketching with variational implicit surfaces. In Comput. Graph. Forum, 21 (3) .

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Bandyopadhyay, Deepak, Raskar, Ramesh and Fuchs, Henry (2001): Dynamic Shader Lamps: Painting on Movable Objects. In: 4th International Symposium on Augmented Reality ISAR 2001 29-30 October, 2001, New York, NY, USA. pp. 207-216.

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Raskar, Ramesh (2000): Immersive Planar Display using Roughly Aligned Projectors. In: VR 2000 2000. pp. 109-116.

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Welch, Greg, Fuchs, Henry, Raskar, Ramesh, Towles, Herman and Brown, Michael S. (2000): Projected Imagery in Your "Office of the Future. In IEEE Computer Graphics and Applications, 20 (4) pp. 62-67.

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Raskar, Ramesh, Brown, Michael S., Yang, Ruigang, Chen, Wei-Chao, Welch, Greg, Towles, Herman, Seales, W. Brent and Fuchs, Henry (1999): Multi-Projector Displays Using Camera-Based Registration. In: IEEE Visualization 1999 1999. pp. 161-168.

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Raskar, Ramesh and Cohen, Michael F. (1999): Image precision silhouette edges. In: SI3D 1999 1999. pp. 135-140.

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