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SKETCH: An interface for sketching 3d scenes

SKETCH: An interface for sketching 3d scenes

引用

ACM SIGGRAPH 2007 - International Conference on computer graphics and Interactive Techniques

作者： Zeleznik, Robert C. Herndon, Kenneth P. Hughes, John F. Brown University NSF Science and Technology Center for Computer Graphics and Scientific Visualization PO Box 1910 Providence RI 02912 United States

Sketching communicates ideas rapidly through approximate visual images with low overhead (pencil and paper), no need for precision or specialized knowledge, and ease of low-level correction and revision. In contrast, most 3D computer modeling systems are good at generating arbitrary views of precise 3D models and support high-level editing andrevision. The SKETCH application described in this paper attempts to combine the advantages of each in order to create an environment for rapidly conceptualizing and editing approximate 3D scenes. To achieve this, SKETCH uses simple non-photorealistic rendering and a purely gestural interface based on simplified line drawings of primitives that allows all operations to be specified within the 3D world.

关键词： Three dimensional computer graphics

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SKETCH: An interface for sketching 3D scenes 06

SKETCH: An interface for sketching 3D scenes

引用

2006 ACM SIGGRAPH Courses, SIGGRAPH 2006

作者： Zeleznik, Robert C. Herndon, Kenneth P. Hughes, John F. NSF Science and Technology Center for Computer Graphics and Scientific Visualization PO Box 1910 ProvidenceRI02912 United States

ISBN: (纸本)1595933646

Sketching communicates ideas rapidly through approximate visual images with low overhead (pencil and paper), no need for precision or specialized knowledge, and ease of low-level correction and revision. In contrast, most 3D computer modeling systems are good at generating arbitrary views of precise 3D models and support high-level editing and revision. The SKETCH application described in this paper attempts to combine the advantages of each in order to create an environment for rapidly conceptualizing and editing approximate 3D scenes. To achieve this, SKETCH uses simple non-photorealistic rendering and a purely gestural interface based on simplified line drawings of primitives that allows all operations to be specified within the 3D world.

关键词： Three dimensional computer graphics

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Granularity in the design of interactive illustrations 13

Granularity in the design of interactive illustrations

引用

13th SIGCSE Technical Symposium on computer science Education, SIGCSE 1999

作者： Gould, Daniel L. Simpson, Rosemary M. Van Dam, Andries Brown University NSF Science and Technology Center Computer Graphics and Scientific Visualization Box 1910 ProvidenceRI02912 United States

ISBN: (纸本)9781581130850

We describe some issues in designing and building educational Java applets for an introductory computer graphics course. The design problem involves balancing educational goals of building intuition about fundamental concepts in a domain against heterogeneity both in subject material and in student backgrounds. We present our design approach for resolving these forces - fine-grained units addressing small concepts - and discuss its effects on other areas including hypertext structure, interface design, and software engineering. © 1999 ACM.

关键词： User interfaces

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A multimodal interface framework for using hand gestures and speech in virtual environment applications 3rd

A multimodal interface framework for using hand gestures and...

引用

3rd International Gesture Workshop on Gesture-Based Communication in Human-computer Interaction, GW 1999

作者： Laviola, Joseph J. Brown University Site of the NSF Science and Technology Center Computer Graphics and Scientific Visualization PO Box 1910 ProvidenceRI02912 United States

ISBN: (纸本)3540669353

Recent approaches to providing users with a more natural method of interacting with virtual environment applications have shown that more than one mode of input can be both beneficial and intuitive as a communication medium between humans and computer applications. Hand gestures and speech appear to be two of the most logical since users will typically be in environments that will have them immersed in a virtual world with limited access to traditional input devices such as the keyboard or the mouse. In this paper, we describe an ongoing research project to develop multimodal interfaces that incorporate 3D hand gestures and speech in virtual environments. © Springer-Verlag Berlin Heidelberg 1999.

关键词： Virtual reality

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Skin: A constructive approach to modeling free-form shapes 99

Skin: A constructive approach to modeling free-form shapes

引用

26th Annual Conference on computer graphics and Interactive Techniques, SIGGRAPH 1999

作者： Markosian, Lee Cohen, Jonathan M. Crulli, Thomas Hughes, John Brown University Site of the NSF Technology Center for Computer Graphics and Scientific Visualization Box 1910 ProvidenceRI02912 United States

ISBN: (纸本)0201485605

We present a new particle-based surface representation with which a user can interactively sculpt free-form surfaces. The particles maintain mesh connectivity and operate under rules that lead them to form triangulations with properties that make them suitable for use in subdivision. A user interactively guides the particles, which we call skin, to grow over a given collection of polyhedral elements (or skeletons), yielding a smooth surface (through subdivision) that approximates the underlying skeletal shapes. Skin resembles blobby modeling in the constructive approach to modeling it supports, but allows a richer vocabulary of skeleton shapes, supports sharp creases where desired, and provides a convenient mechanism for adding multiresolution surface detail. Copyright ACM 1999.

关键词： Musculoskeletal system

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An interface for sketching 3D curves 99

An interface for sketching 3D curves

引用

Proceedings of the 1999 symposium on Interactive 3D graphics

作者： Jonathan M. Cohen Lee Markosian Robert C. Zeleznik John F. Hughes Ronen Barzel Brown University Site of the NSF Science and Technology Center for Computer Graphics and Scientific Visualization Providence RI PIXAR

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The office of the future: A unified approach to image-based modeling and spatially immersive displays 98

The office of the future: A unified approach to image-based ...

引用

25th Annual Conference on computer graphics and Interactive Techniques, SIGGRAPH 1998

作者： Raskar, Ramesh Welch, Greg Cutts, Matt Lake, Adam Stesin, Lev Fuchs, Henry University of North Carolina at Chapel Hill NSF Science and Technology Center for Computer Graphics and Scientific Visualization CB 3175 Sitterson Hall Chapel Hill NC 27599-3175 United States

ISBN: (纸本)0897919998

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 and builds upon the notions of the CAVE™, tiled display systems, and image-based modeling. The basic idea is to use real-time computer vision techniques to dynamically extract per-pixel depth and reflectance information for the visible surfaces in the office including walls, furniture, objects, and people, and then to either project images on the surfaces, render images of the surfaces, or interpret changes in the surfaces. In the first case, one could designate every-day (potentially irregular) real surfaces in the office to be used as spatially immersive display surfaces, and then project high-resolution graphics and text onto those surfaces. In the second case, one could transmit the dynamic image-based models over a network for display at a remote site. Finally, one could interpret dynamic changes in the surfaces for the purposes of tracking, interaction, or augmented reality applications. To accomplish the simultaneous capture and display we envision an office of the future where the ceiling lights are replaced by computer controlled cameras and "smart" projectors that are used to capture dynamic image-based models with imperceptible structured light techniques, and to display high-resolution images on designated display surfaces. By doing both simultaneously on the designated display surfaces, one can dynamically adjust or autocalibrate for geometric, intensity, and resolution variations resulting from irregular or changing display surfaces, or overlapped projector images. Our current approach to dynamic image-based modeling is to use an optimized structured light scheme that can capture per-pixel depth and reflectance at interactive rates. Our system implementation is not yet imperceptible, but we can demonstrate the approach in the laboratory. Our approach to rende

关键词： Reflection

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Two pointer input for 3D interaction 97

Two pointer input for 3D interaction

引用

Proceedings of the 1997 symposium on Interactive 3D graphics

作者： Robert C. Zeleznik Andrew S. Forsberg Paul S. Strauss Brown University site of the NSF Science and Technology Center for Computer Graphics and Scientific Visualization Providence RI Silicon Graphics Computer Systems

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Image plane interaction techniques in 3D immersive environments 97

Image plane interaction techniques in 3D immersive environme...

引用

Proceedings of the 1997 symposium on Interactive 3D graphics

作者： Jeffrey S. Pierce Andrew S. Forsberg Matthew J. Conway Seung Hong Robert C. Zeleznik Mark R. Mine Department of Computer Science University of Virginia Charlottesville VA Brown University site of the NSF Science and Technology Center for Computer Graphics and Scientific Visualization Providence RI Department of Computer Science University of North Carolina Chapel Hill NC

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The Lego interface toolkit 96

The Lego interface toolkit

引用

Proceedings of the 9th annual ACM symposium on User interface software and technology

作者： Matthew Ayers Robert Zeleznik Brown University site of the NSF Science and Technology Center for Computer Graphics and Scientific Visualization Providence RI

No abstract available.

ISBN: (纸本)9780897917988

No abstract available.

关键词： 3D interface virtual reality snap-together reconfigurable hardware Lego prototype

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