Augmenting Light Field to model Wave Optics effects (2009)
Oh, Se Baek, Barbastathis, George, Raskar, Ramesh
The ray-based 4D light field representation cannot be directly used to analyze diffractive or phase--sensitive optical elements. In this paper, we exploit tools from wave optics and extend the light...
Simple LCD Transmitter Camera Receiver Data Link (2009)
Katabi, Dina, Raskar, Ramesh, Mohan, Ankit, Woo, Grace
We demonstrate a freespace optical system using a consumer camera and projector in indoor environments using available devices for visual computing. Through design, prototype and experimentation with...
Simple LCD Transmitter Camera Receiver Data Link (2009)
Katabi, Dina, Raskar, Ramesh, Mohan, Ankit, Woo, Grace
We demonstrate a freespace optical system using a consumer camera and projector in indoor environments using available devices for visual computing. Through design, prototype and experimentation with...
Abstract Interacting with Spatially Augmented Reality (2009)
Traditional user interfaces for off-the-desktop applications are designed to display the output on flat 2D surfaces while the input is with 2D or 3D devices. In this paper, we focus on projectorbased...
Abstract Handheld Projectors for Mixing Physical and Digital Textures (2009)
Paul Beardsley, Clifton Forlines, Ramesh Raskar, Jeroen Vanbaar
Handheld projectors offer a new type of display modality, not tied to a physical screen or to a fixed projection area, yet providing a larger display than is available from a handheld device with...
Multi-Flash Stereopsis: Depth Edge Preserving Stereo with Small Baseline Illumination (2009)
Rogerio Feris, Ramesh Raskar, Longbin Chen, Karhan Tan, Matthew Turk
Traditional stereo matching algorithms are limited in their ability to produce accurate results near depth discontinuities, due to partial occlusions and violation of smoothness constraints. In this...
Mitsubishi Electric Research Labs (2008)
Vidya Setlur, Saeko Takagi, Ramesh Raskar, Michael Gleicher, Bruce Gooch
Figure 1: left) The source image containing three areas of importance, the two boys, and the ball. center) The source image retargeted to fit a PDA display. right) The source image retargeted to fit...
Mitsubishi Electric Research Labs (2008)
Rogerio Feris, Matthew Turk, Ramesh Raskar, Kar-han Tan, Gosuke Ohashi
Although steady progress has been made on developing vision-based gesture recognition systems, state-of-the-art approaches are still limited to discriminate hand configurations with high amounts of...
Mitsubishi Electric Research Labs (2008)
Current blending methods in image-based rendering use local information such as “deviations from the closest views ” to find blending weights. They include approaches such as view-dependent...
Agile Spectrum Imaging: Programmable Wavelength Modulation for Cameras and Projectors (2008)
Ankit Mohan, Ramesh Raskar, Jack Tumblin
We advocate the use of quickly-adjustable, computer-controlled color spectra in photography, lighting and displays. We present an optical relay system that allows mechanical or electronic color...
Associate Professor, Peter Shirley, Professor Elaine Cohen, Professor Charles Hansen, Bruce Gooch, ...
Rogerio Feris, Ramesh Raskar, Kar-han Tan, Matthew Turk, Rogerio Feris
We present a novel method to reduce the effect of specularities in digital im-ages. Our approach relies on a simple modification of the capture setup: a multi-flash camera is used to take multiple...
Ramesh Raskar, Greg Welch, Matt Cutts, Adam Lake, Lev Stesin, Henry Fuchs
We introduce ideas, proposed technologies, and initial results for an office of the future that is based on a unified application of computer vision and computer graphics in a system that combines...
Abstract Image Precision Silhouette Edges (2008)
Finding and displaying silhouette edges is important in applications ranging from computer vision to nonphotorealistic rendering. To render visible silhouette edges of a polygonal object in a scene...
Bimber and Raskar, Spatial Augmented Reality Modern Approaches to Augmented Reality (2008)
This tutorial discusses the Spatial Augmented Reality (SAR) concept, its advantages and limitations. It will present examples of state-of-the-art display configurations, appropriate real-time...
A Handheld Projector supported by Computer Vision (2008)
Akash Kushal, Jeroen Van Baar, Ramesh Raskar, Paul Beardsley
Abstract. This paper describes the use of computer vision to support the operation of a handheld projector, and describes four applications. Projectors in the past have been used as fixed devices,...
Detecting and Segmenting Un-occluded Items by Actively Casting Shadows (2008)
Tze K. Koh, Amit Agrawal, Ramesh Raskar, Steve Morgan, Nicholas Miles, Barrie Hayes-gill
Abstract. We present a simple and practical approach for segmenting un-occluded items in a scene by actively casting shadows. By ’items’, we refer to objects (or part of objects) enclosed by...
EUROGRAPHICS 2006 STAR – State of the Art Report Computational Photography (2008)
Ramesh Raskar, Jack Tumblin, Ankit Mohan, Amit Agrawal, Yuanzen Li
Computational photography combines plentiful computing, digital sensors, modern optics, actuators, probes and smart lights to escape the limitations of traditional film cameras and enables novel...
Mitsubishi Electric Research, Ramesh Raskar, Amit Agrawal, Jack Tumblin, C Deblurred Image
In a conventional single-exposure photograph, moving objects or moving cameras cause motion blur. The exposure time defines a temporal box filter that smears the moving object across the image by...
EUROGRAPHICS Workshop on Sketch-Based Interfaces and Modeling (2004) (2008)
John Hughes And, John F. Hughes, Olga Karpenko, John F. Hughes, Ramesh Raskar
Single view sketch-based modelers like SKETCH and Teddy can be powerful tools, but sometimes their inferences are inadequate: in Teddy, for example, if one draws an animal shape, the centerline of...
Towards Passive 6D Reflectance Field Displays (2008)
Fuchs, Martin, Raskar, Ramesh, Seidel, Hans-Peter, Lensch, Hendrik P. A.
Traditional flat screen displays present 2D images. 3D and 4D displays have been proposed making use of lenslet arrays to shape a fixed outgoing light field for horizontal or bidirectional parallax....
Abstract Display Grid: Ad-hoc Clusters of Autonomous Projectors (2007)
Ramesh Raskar, Jeroen Vanbaar, Paul Beardsley
Inspired by emerging trends in grid computing, we present techniques for creating multi-projector displays via selfconfiguring clusters of autonomous projectors. The ad-hoc clustering approach avoids...
Large Displays Projected Imagery in Your “Office of (2007)
The Future, Andrei State, Greg Welch, Henry Fuchs, Ramesh Raskar, Herman Towles, ...
In July 1998 we presented a long-term vision for a project we call the “Office of the Future ” at ACM Siggraph 98. 1 Our dream, depicted in Figure 1, is that some day your office will have...
Multisurface Displays, Ramesh Raskar, Matt Cutts, Greg Welch, Wolfgang Strzlinger
Abstract. We describe an efficient approach to rendering a perspectively correct image on a potentially irregular display surface that may be illuminated with one or more distinct devices. The first...
Ramesh Raskar, Greg Welch, Matt Cutts, Adam Lake, Lev Stesin, Henry Fuchs
We introduce ideas, proposed technologies, and initial results for an office of the future that is based on a unified application of computer vision and computer graphics in a system that combines...
PERSPECTIVES Merging Fossil Specimens with (2007)
Stephen M. Gatesy, Lawrence M. Witmer, Ramesh Raskar, L. Miguel Encarnação
paleontology—the use of augmented reality technologies to clothe fossil skeletons with soft tissues and skin— will let paleontologists bring their bare-bones specimens to life.
Ramesh Raskar, Kok-lim Low, Greg Welch
UNC is an Equal Opportunity/Affirmative Action Institution. We describe a new paradigm for three-dimensional computer graphics, using projectors to graphically animate physical objects in the real...
Abstract Dynamic Spatially Augmented 3D Painting (2007)
Deepak Bandyopadhyay, Ramesh Raskar, Andrei State, Henry Fuchs
We present techniques for creating a Spatially Augmented Reality for moving polygonal objects in an indoor environment, and a system that uses these techniques for painting in 3D on these objects in...
Dynamic Shader Lamps: Painting on Movable Objects (2007)
Deepak B, Deepak Bandyopadhyay, Ramesh Raskar, Ramesh Raskar, Henry Fuchs, Henry Fuchs
We present a Dynamic Spatially Augmented Reality system for augmenting movable 3D objects in an indoor environment using multiple projectors. We describe a realtime system for applying virtual paint...
Raskar, Ramesh, Nii, Hideaki, DE DECKER, Bert, Hashimoto, Yuki, Summet, Jay, Moore, Dylan, ...
In this paper, we present a high speed optical motion capture method that can measure three dimensional motion, orientation, and incident illumination at tagged points in a scene. We use tracking...
Resolving Objects at Higher Resolution from a Single Motion-blurred Image (2007)
Motion blur can degrade the quality of images and is considered a nuisance for computer vision problems. In this paper, we show that motion blur can in-fact be used for increasing the resolution of a...
Ashok Veeraraghavan, Ramesh Raskar, Amit Agrawal, Ankit Mohan, Jack Tumblin
Figure 1: Our heterodyne light field camera provides 4D light field and full-resolution focused image simultaneously. (First Column) Raw sensor image. (Second Column) Scene parts which are in-focus...
Edge Suppression by Gradient Field Transformation Using Cross-Projection Tensors (2006)
Amit Agrawal, Ramesh Raskar, Rama Chellappa
We propose a new technique for edge-suppressing operations on images. We introduce cross projection tensors to achieve affine transformations of gradient fields. We use these tensors, for example, to...
What is the Range of Surface Reconstructions from a (2006)
Gradient Field Amit, Amit Agrawal, Ramesh Raskar
We propose a generalized equation to represent a continuum of surface reconstruction solutions of a given non-integrable gradient field. We show that common approaches such as Poisson solver and...
Bimber and Raskar, Spatial Augmented Reality Modern Approaches to Augmented Reality (2006)
Oliver Bimber, Ramesh Raskar, Oliver Bimber, Ramesh Raskar
This tutorial discusses the Spatial Augmented Reality (SAR) concept, its advantages and limitations. It will present examples of state-of-the-art display configurations, appropriate realtime...
Dealing with multi-scale depth changes and motion in depth edge detection (2006)
Rogerio Feris, Matthew Turk, Ramesh Raskar, Rogerio Feris, Matthew Turk, Ramesh Raskar
Sharp discontinuities in depth, or depth edges, are very important low-level features for scene understanding. Recently, we have proposed a solution to the depth edge detection problem using a simple...
What is the range of surface reconstructions from a gradient field (2006)
Abstract. We propose a generalized equation to represent a continuum of surface reconstruction solutions of a given non-integrable gradient field. We show that common approaches such as Poisson...
Fast separation of direct and global components of a scene using high frequency illumination (2006)
Shree K. Nayar, An Krishnan, Michael D. Grossberg, Ramesh Raskar
We present fast methods for separating the direct and global illumination components of a scene measured by a camera and illuminated by a light source. In theory, the separation can be done with just...
Coded exposure photography: motion deblurring using fluttered shutter (2006)
Ramesh Raskar, Ramesh Raskar, Amit Agrawal, Amit Agrawal, Jack Tumblin, Jack Tumblin
In a conventional single-exposure photograph, moving objects or moving cameras cause motion blur. The exposure time defines a temporal box filter that smears the moving object across the image by...
Natural Video Matting using Camera Arrays (2006)
Ramesh Raskar, Jeroen Van Baar, Paul Beardsley, Thomas Willwacher, Srinivas Rao, Neel Joshi, ...
Projectors are currently undergoing a transformation as they evolve from static output devices to portable, environment-aware, communicating systems. An enhanced projector can determine and respond...
via Photosensing Wireless Tags and Projectors (2006)
Ramesh Raskar, Paul Beardsley, Jeroen Van Baar, Yao Wang, Paul Dietz, Johnny Lee, ...
This paper describes how to instrument the physical world so that objects become self-describing, communicating their identity, geometry, and other information such as history or user annotation. The...
Fast separation of direct and global components of a scene using high frequency illumination (2006)
Shree K. Nayar, Gurunandan Krishnan, Michael D. Grossberg, Ramesh Raskar
Figure 1: (a) A scene lit by a single source of light. The scene includes a wide variety of physical phenomena that produce complex global illumination effects. We present several methods for...
Removing photography artifacts using gradient projection and flash-exposure sampling (2005)
Amit Agrawal, Ramesh Raskar, Shree K. Nayar, Yuanzhen Li
Figure 1: Undesirable artifacts in photography can be reduced by comparing image gradients at corresponding locations in a pair of flash and ambient images. (Left) Removing flash hot spot. Flash and...
Discontinuity preserving stereo with small baseline multi-flash illumination (2005)
Rogerio Feris, Ramesh Raskar, Longbin Chen, Kar-han Tan, Matthew Turk
Currently, sharp discontinuities in depth and partial occlusions in multiview imaging systems pose serious challenges for many dense correspondence algorithms. However, it is important for 3D...
Mitsubishi Electric Research Laboratories (2005)
Http Www Merl, Amit Agrawal, Ramesh Raskar, Jack Tumblin, Jack Tumblin
of Maryland aagrawal@umd.edu Ramesh Raskar MERL raskar@merl.com We propose a camera that measures static gradients instead of static intensities. Quantizing sensed intensity differences between...
Low-Cost Multi-Projector Curved Screen Displays (2005)
Ramesh Raskar, Jeroen Van Baar
This paper focuses on spherical and cylindrical displays used in immersive VR, and that use projection to display imagery on the display surface. Close proximity to these types of curved display...
Videoshop: A New Framework for Spatio-Temporal Video Editing (2005)
Hongcheng Wang, Ning Xu, Ramesh Raskar, Narendra Ahuja
This paper proposes a new framework for video editing in gradient domain. The spatio-temporal gradient fields of target videos are modified and/or mixed to generate a new gradient field which is...
Clifton Forlines, Clifton Forlines, Ravin Balakrishnan, Ravin Balakrishnan, Paul Beardsley, Paul Beardsley, ...
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...
Clifton Forlines, Ravin Balakrishnan, Paul Beardsley, Jeroen Van Baar, Ramesh Raskar
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...
Discontinuity Preserving Stereo with Small Baseline Multi-Flash Illumination (2005)
Rogerio Feris Ramesh, Ramesh Raskar, Longbin Chen, Kar-han Tan, Matthew Turk
Currently, sharp discontinuities in depth and partial occlusions in multiview imaging systems pose serious challenges for many dense correspondence algorithms. However, it is important for 3D...
Mitsubishi Electric Research Laboratories (2005)
Http Www Merl, Hongchen Wang, Hongcheng Wang, Ramesh Raskar, Ramesh Raskar, Narendra Ahuja, ...
This paper presents a new framework for seamless video Editing in the gradient domain. The spatio-temporal gradient fields of target videos are modified or mixed to generate a new gradient field,...
Paul Beardsley, Ramesh Raskar, Clifton Forlines, Jeroen Van Baar
this paper is interactive projection - a technique for moving a cursor across a projection, allowing all the familiar mouse-interactions from the desktop to be transposed to a handheld projector, and...
Removing Photography Artifacts Using Gradient Projection and Flash-Exposure Sampling (2005)
Amit Agrawal, Ramesh Raskar, Shree K. Nayar, Yuanzhen Li
Flash images are known to suffer from several problems: saturation of nearby objects, poor illumination of distant objects, reflections of objects strongly lit by the flash and strong highlights due...
Abstract Flexible Calibration of Multiple Projectors for Low-Cost Curved Screen Displays (2005)
Current systems for high resolution curved screen displays are expensive and target high-end applications. These types of displays could be very useful in other applications areas besides high-end,...
Tags are Coming! Photosensing Wireless Tags for Geometric Procedures (2005)
Ramesh Raskar, Paul Beardsley, Paul Dietz, Jeroen Van Baar, Ramesh Raskar, Paul Beardsley, ...
Radio frequency tags allow objects to become self-describing, communicating their identity to a close at hand RF reader. Our goal is to build a radio frequency identity and geometry (RFIG)...
High dynamic range video using split aperture camera (2005)
Hongcheng Wang, Ramesh Raskar, Narendra Ahuja
We present a new approach to display High Dynamic Range (HDR) video using gradient based high dynamic range compression. To obtain HDR video, we utilize the split aperture camera. We apply a...
Automatic image retargeting (2005)
Vidya Setlur, Saeko Takagi, Ramesh Raskar, Michael Gleicher, Bruce Gooch
We present a non-photorealistic algorithm for automatically retargeting images for a variety of display devices, while preserving the images ' important features and qualities. Image...
Automatic image retargeting (2005)
Vidya Setlur, Ramesh Raskar, Saeko Takagi, Michael Gleicher, Bruce Gooch
Figure 1: Preserving functional realism rather than photo-realism by image retargeting. (a) The source image containing three areas of higher importance, the two boys, and the ball. (b) The source...
Specular reflection reduction with multi-flash imaging (2004)
Rogerio Feris, Ramesh Raskar, Karhan Tan, Matthew Turk
Abstract. We present a novel method to reduce the effect of specularities in digital images. Our approach relies on a simple modification of the capture setup: a multi-flash camera is used to take...
Image fusion for context enhancement and video surrealism (2004)
Figure 1: Automatic context enhancement of a night time scene. The image is reconstructed from a gradient field. The gradient field is a linear blend of intensity gradients of the night time image...
Multiprojectors and implicit interaction in persuasive public displays (2004)
Paul Dietz, Ramesh Raskar, Shane Booth, Jeroen Van Baar, Kent Wittenburg, Brian Knep
Recent advances in computer video projection open up new possibilities for real-time interactive, persuasive displays. Now a display can continuously adapt to a viewer so as to maximize its...
Specular reflection reduction with multi-flash imaging (2004)
Rogerio Feris, Ramesh Raskar, Kar-han Tan, Matthew Turk
We present a novel method to reduce the effect of specularities in digital images. Our approach relies on a simple modification of the capture setup: a multi-flash camera is used to take multiple...
Exploiting Depth Discontinuities for Vision-based Fingerspelling Recognition (2004)
Rogerio Feris, Matthew Turk, Ramesh Raskar, Karhan Tan, Gosuke Ohashi
We present a novel method for automatic fingerspelling recognition which is able to discriminate complex hand configurations with high amounts of finger occlusions. Such a scenario, while common in...
Exploiting Depth Discontinuities for Vision-based Fingerspelling Recognition (2004)
Rogerio Feris, Matthew Turk, Ramesh Raskar, Karhan Tan, Gosuke Ohashi
We present a novel method for automatic fingerspelling recognition which is able to discriminate complex hand configurations with high amounts of finger occlusions. Such a scenario, while common in...
Shape-Enhanced Surgical Visualizations and Medical Illustrations with Multi-Flash Imaging (2004)
Kar-han Tan, James Kobler, Rogerio S. Feris, Paul Dietz, Ramesh Raskar
We present a novel approach for enhancing images and video used in endoscopic surgery so that they are better able to convey shape.
Specular Reflection Reduction with Multi-Flash Imaging (2004)
Rogerio Feris, Ramesh Raskar, Kar-han Tan, Matthew Turk
We present a novel method to reduce the effect of specularities in digital images. Our approach relies on a simple modification of the capture setup: a multi-flash camera is used to take multiple...
Specular Reflection Reduction with Multi-Flash Imaging (2004)
R.S. Feris, R. Raskar, K. Tan, M. Turk, Rogerio Feris, Ramesh Raskar, ...
We present a novel method to reduce the effect of specularities in digital images. Our approach relies on a simple modification of the capture setup: a multi-flash camera is used to take multiple...
Exploiting Depth Discontinuities for Vision-Based Fingerspelling Recognition (2004)
Kar-han Tan, Rogerio Feris, Rogerio Feris, Matthew Turk, Matthew Turk, Ramesh Raskar, ...
this paper is organized as follows: in Section 2 we describe our multi-flash technique for extraction of depth edges. Section 3 covers our shape descriptor and classification method. We report our...
Merl -- A Mitsubishi Electric Research Laboratory (2004)
Http Www Merl, Ramesh Raskar, Jeroen Baar, Paul Beardsley, Ramesh Raskar, Jeroen Vanbaar, ...
this paper, we are not discussing the photometric correction aspects or issues of image quality due to warping. The demonstration shows a front projection setup, but the ideas can be used in a...
Depth edge detection and stylized rendering using multi-flash imaging (2004)
Ramesh Raskar, Kar-han Tan, Rogerio Feris, Jingyi Yu, Matthew Turk, Ramesh Raskar, ...
We present a non-photorealistic rendering approach to capture and convey shape features of real-world scenes. We use a camera with multiple flashes that are strategically positioned to cast shadows...
Ramesh Raskar, Kar-han Tan, Rogerio Feris, Jingyi Yu, Matthew Turk
Figure 1: (a) A photo of a car engine (b) Stylized rendering highlighting boundaries between geometric shapes. Notice the four spark plugs and the dip-stick which are now clearly visible (c) Photo of...
Automatic Projector Calibration with Embedded Light Sensors (2004)
Johnny C. Lee, Paul H. Dietz, Dan Maynes-aminzade, Ramesh Raskar, Scott E. Hudson
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...
Hongcheng Wang, Ramesh Raskar, Narendra Ahuja
This paper presents a new framework for seamless video Editing in the gradient domain. The spatio-temporal gradient fields of target videos are modified or mixed to generate a new gradient field,...
A.: A non-photorealistic camera: Detecting silhouettes with multi-flash (2003)
We describe a non-photorealistic camera (‘NPR camera’) to robustly capture edge information in real scenes. New stylized images are synthesized by highlighting or de-emphasizing the detected...
Seamless Multi-Projector Display on Curved Screens (2003)
Jeroen Van Baar, Jeroen Van Baar, Thomas Willwacher, Thomas Willwacher, Srinivas Rao, Srinivas Rao, ...
this paper is a contribution in that direction. In particular, we have designed a system for deploying modestly sized (4-6 projector), but highly flexible curved display composed entirely of...
Abstract Intelligent Clusters and Collaborative Projector-based Displays (2003)
Ramesh Raskar, Jeroen Van Baar, Paul Beardsley, Clifton Forlines, Paul Dietz, Alan Esenther, ...
As computing has moved off the desktop, visualization research in interaction, computer graphics and usability has become more interdisciplinary. In this paper we focus on our work in two areas. We...
Abstract Intelligent Clusters and Collaborative Projector-based Displays (2003)
Ramesh Raskar, Jeroen Van Baar, Paul Beardsley, Clifton Forlines, Paul Dietz, Alan Esenther, ...
As computing has moved off the desktop, visualization research in interaction, computer graphics and usability has become more interdisciplinary. In this paper we focus on our work in two areas. We...
ilamps: Geometrically aware and self-configuring projectors (2003)
Ramesh Raskar, Ramesh Raskar, Jeroen Baar, Jeroen Baar, Paul Beardsley, Paul Beardsley, ...
Projectors are currently undergoing a transformation as they evolve from static output devices to portable, environment-aware, communicating systems. An enhanced projector can determine and respond...
Projector-based three dimensional graphics [microform] / (2002)
Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 2002.
Cartoon Dioramas in Motion (2002)
Ramesh Raskar, Ramesh Raskar, Remo Ziegler, Remo Ziegler, Thomas Willwacher, Thomas Willwacher
Cartoon animations delight the audience with moving characters but they remain on a flat 2D screen. The cartoon dioramas, on the other hand, are detailed, three-dimensional and allow physical...
Lyudmil Vladimirov Antonov, Ramesh Raskar, Ph D
Researchers have developed a technique such that when the colors of a static image are toggled on a screen, the illusion of continuous movement in a certain direction is produced. This phenomenon is...
Cartoon Dioramas in Motion (2002)
Ramesh Raskar, Remo Ziegler, Thomas Willwacher
Cartoon animations delight the audience with moving characters but they remain on a flat 2D screen. The cartoon dioramas, on the other hand, are detailed, three-dimensional and allow physical...
Free-form sketching with variational implicit surfaces (2002)
Olga Karpenko, John F. Hughes, Ramesh Raskar
With the advent of sketch-based methods for shape construction, there’s a new degree of power available in the rapid creation of approximate shapes. Sketch [Zeleznik, 1996] showed how a...
A Low-Cost Projector Mosaic with Fast Registration (2002)
Jeroen Van Baar, Ramesh Raskar, Ramesh Raskar, Jeroen Baar, Jin Xiang Chai, Jin Xiang Chai
this paper, we present a set of techniques to compute the pixel mapping between uncalibrated projectors by exploiting planar homographies. We then demonstrate a method for correctly displaying...
Mitsubishi Electric Research Laboratories (2002)
Http Www Merl, Olga Karpenko, John F. Hughes, Ramesh Raskar
this paper, we discuss our preliminary efforts at using variational implicit surfaces [Turk, 2000] as a representation in a free-form modeler. We also discuss the implementation of several operations...
Cartoon Dioramas in Motion (2002)
Ramesh Raskar, Ramesh Raskar, Remo Ziegler, Remo Ziegler, Thomas Willwacher, Thomas Willwacher
Cartoon animations delight the audience with moving characters but they remain on a flat 2D screen. The cartoon dioramas, on the other hand, are detailed, three-dimensional and allow physical...
Cartoon Dioramas in Motion (2002)
Ramesh Raskar, Remo Ziegler, Thomas Willwacher
Cartoon animations delight the audience with moving characters but they remain on a flat 2D screen. The cartoon dioramas, on the other hand, are detailed, three-dimensional and allow physical...
Projector-Based Three Dimensional Graphics (2002)
Reader Guido Gerig, Gary Bishop, Leonard Mcmillan, Ramesh Raskar, ...
Projector-based Three Dimensional Graphics (Under the direction of Henry Fuchs and Gregory Welch) Light projectors can be arranged into electronic displays that offer large, bright, and high...
Dynamic Shader Lamps: Painting on Movable Objects (2001)
Deepak Bandyopadhyay, Ramesh Raskar, Henry Fuchs
We present a Dynamic Spatially Augmented Reality system for augmenting movable 3D objects in an indoor environment using multiple projectors. We describe a real-time system for applying virtual paint...
Mitsubishi Electric Research Laboratories (2001)
Http Www Merl, Ramesh Raskar, Ramesh Raskar, Kok-lim Low, Kok-lim Low
this paper, we focus on projectorbased augmented reality applications. We describe a framework to easily incorporate the interaction on a continuum of display surfaces and input devices
Mitsubishi Electric Research Laboratories (2001)
Http Www Merl, Ramesh Raskar, Greg Welch, Kok-lim Low, Deepak Bandyopadhyay
this paper, we have mainly focussed on the visualization aspect, but a more detailed study of human interaction and issues is necessary
Mitsubishi Electric Research Laboratories (2001)
Http Www Merl, Ramesh Raskar, Paul Beardsley
this paper, we present a technique to calibrate a projector, and associated camera, by exploiting planar homographies. We then demonstrate a method for correctly displaying rectangular images on a...
Mitsubishi Electric Research Laboratories (2001)
ering MERL, Mitsubishi Electric Research Labs Special features such as ridges, valleys and silhouettes, of a polygonal scene are usually displayed by explicitly identifying and then rendering...
Image-Based Visual Hulls (2000)
Wojciech Matusik, Chris Buehler, Ramesh Raskar, Steven Gortler, Leonard McMillan
In this paper, we describe an efficient image-based approach to computing and shading visual hulls from silhouette image data. Our algorithm takes advantage of epipolar geometry and incremental...
Ramesh Raskar, Greg Welch, Wei-chao Chen
Despite the availability of high-quality graphics systems, architects and designers still build scaled physical models of buildings and products. These physical models have many advantages, however...
Multi-Projector Displays Using Camera-Based Registration (1999)
Ramesh Raskar, Michael Brown, Ruigang Yang, Wei-chao Chen, Greg Welch, Herman Towles, ...
Conventional projector-based display systems are typically designed around precise and regular configurations of projectors and display surfaces. While this results in rendering simplicity and speed,...
Ramesh Raskar, Greg Welch, Wei-Chao Chen
Despite the availability of high-quality graphics systems, architects and designers still build scaled physical models of buildings and products. These physical models have many advantages, however...
Multi-Projector Displays Using Camera-Based Registration (1999)
Ramesh Raskar, Michael Brown, Ruigang Yang, Wei-chao Chen, Greg Welch, Herman Towles, ...
Conventional projector-based display systems are typically designed around precise and regular configurations of projectors and display surfaces. While this results in rendering simplicity and speed,...
Efficient Image Generation for Multiprojector and Multisurface Displays (1998)
Ramesh Raskar, Matt Cutts, Greg Welch, Wolfgang Stüerzlinger
Abstract. We describe an efficient approach to rendering a perspectively correct image for a single eye point, on a potentially irregular display surface that is illuminated with one or more distinct...
Augmented reality visualization for laparoscopic surgery (1998)
Henry Fuchs, Mark A. Livingston, Ramesh Raskar, Andrei State, Jessica R. Crawford, Paul Rademacher, ...
Abstract. We present the design and a prototype implementation of a three-dimensional visualization system to assist with laparoscopic surgical procedures. The system uses 3D visualization, depth...
Seamless Projection Overlaps Using Image Warping and Intensity Blending (1998)
Ramesh Raskar, Greg Welch, Henry Fuchs
Abstract. High-resolution Spatially Immersive Displays (SID) generally involve wide field of view (WFOV) image generation using multiple projectors. This paper describes a robust calibration and...
Spatially Augmented Reality (1998)
Ramesh Raskar, Greg Welch, Henry Fuchs
To create an effective illusion of virtual objects coexisting with the real world, see-through HMD-based Augmented Reality techniques supplement the user's view with images of virtual objects....
Efficient Image Generation for Multiprojector and Multisurface Displays (1998)
Ramesh Raskar, Matt Cutts, Greg Welch, Wolfgang Stÿrzlinger
Abstract. We describe an efficient approach to rendering a perspectively correct image on a potentially irregular display surface that may be illuminated with one or more distinct devices. The first...
Efficient Image Generation for Multiprojector and Multisurface Displays (1998)
Ramesh Raskar, Matt Cutts, Greg Welch, Wolfgang Stürzlinger
We describe an efficient approach to rendering a perspectively correct image on a potentially irregular display surface that may be illuminated with one or more distinct devices. The first pass of...
Spatially Augmented Reality (1998)
Ramesh Raskar, Greg Welch, Henry Fuchs
To create an effective illusion of virtual objects coexisting with the real world, see-through HMD-based Augmented Reality techniques supplement the user's view with images of virtual objects....
Edge-based correspondence using the Viterbi algorithm /--by Ramesh Raskar. (1995)
Typescript (photocopy).