We describe an integrated set of tools for interacting with volumetric data. These tools consist of a unified set of filters, which operate on volumetric data;mappers, which reduce volume data to lower dimensional geo...
详细信息
We describe an integrated set of tools for interacting with volumetric data. These tools consist of a unified set of filters, which operate on volumetric data;mappers, which reduce volume data to lower dimensional geometric primitives;and renderers, which create pictures based on images, three-dimensional geometries, and volumes. These tools are designed as applications within the framework of Stellar's Application Visualization System (AVS). We present three examples from different scientific disciplines.
A methodology is proposed for creating and animating computer generated characters which combines recent research advances in robotics, physically based modeling and geometric modeling. The control points of geometric...
详细信息
ISBN:
(纸本)0897913124
A methodology is proposed for creating and animating computer generated characters which combines recent research advances in robotics, physically based modeling and geometric modeling. The control points of geometric modeling deformations are constrained by an underlying articulated robotics skeleton. These deformations are tailored by the animator and act as a muscle layer to provide automatic squash and stretch behavior of the surface geometry. A hierarchy of composite deformations provides the animator with a multi-layered approach to defining both local and global transition of the character's shape. The muscle deformations determine the resulting geometric surface of the character. This approach provides independent representation of articulation from surface geometry, supports higher level motion control based on various computational models, as well as a consistent, uniform character representation which can be tuned and tweaked by the animator to meet very precise expressive qualities. A prototype system (Critter) currently under development demonstrates research results towards layered construction of deformable animated characters.
Good afternoon, ladies and gentlemen. Thank you very much fortaking time out from the parties to join us for one of theperipheral activities of SIGGRAPH. As you know, the panel thatwe're going to be holding this a...
详细信息
ISBN:
(纸本)0897913531
Good afternoon, ladies and gentlemen. Thank you very much fortaking time out from the parties to join us for one of theperipheral activities of SIGGRAPH. As you know, the panel thatwe're going to be holding this afternoon is entitled the Multi-Media Workstation. Before I make some introductory remarks, Iam required to make some administrative remarks. The first thing is to remind you that the proceedings of all of the panels are being audio taped this year for subsequenttranscription and publication. What that means, is that when wehave the audience interaction, please come to the microphones thatare scattered around the floor to make your remarks. Otherwise, Iwon't be able to recognize you. The second thing I want to mention to you is that when we'redone at 5:15 we are going to vacate the stage. We're going tovacate the room so the AV people can lock up. If you want tocontinue discussion with us, there's a breakout room that's beenset aside, Salon J, which is down around the corner. So join usthere please, because we'll be scooting out of here right away. Finally, I need to tell you that the - for those of you whoare involved - the Pioneers Reception will be held between 6:00and 9:00 at the computer Museum this evening, and buses will leavefrom the Boylston Street exit of the Convention Center at 5:00,5:30 and 6:00. Absolutely no video or audio taping allowed at the Pioneers. You don't want to hear any of those old reminiscencesrepeated. Let's get on with the business of the afternoon. Multi-MediaWorkstations. A couple of preliminary remarks that I think all ofmy colleagues up here will agree with. The things that we're goingto be discussing this afternoon do not represent fundamentally newtechnologies. You've been able to buy add-in video cards and audiodevices for personal computers and workstations for some years now. What we are going to be addressing is a confluence of manytechnologies - hardware and software - that has finally made itpossible to envision a fu
Let S C R3 be an n-set in general position. A plane containing three of the points is. called a halving plane if it dissects S into two parts of equal cardinelity. It is proved that the number of halving planes is at ...
This paper describes the design of a scientific prototyping environment in Smalltalk and discusses implementation strategies to achieve high performance interactive modeling of computationally intensive physical probl...
详细信息
In this paper we describe the evolution of a whole-hand interface to our virtual-environment graphical system. We present a set of abstractions that can be used to implement device-independent interfaces for hand meas...
详细信息
ISBN:
(纸本)0897913353
In this paper we describe the evolution of a whole-hand interface to our virtual-environment graphical system. We present a set of abstractions that can be used to implement device-independent interfaces for hand measurement devices. Some of these abstractions correspond to known logical device abstractions, while others take further advantage of the richness of expression in the human hand. We describe these abstractions in the context of their use in our development of virtual environments.
Three-dimensional imaging is a rapidly developing activity in medical imaging with great potential for improved human health care. The three aspects of this activity - visualization, manipulation, and analysis - toget...
详细信息
Three-dimensional imaging is a rapidly developing activity in medical imaging with great potential for improved human health care. The three aspects of this activity - visualization, manipulation, and analysis - together can contribute significanty to both medical diagnosis and therapy, both for routine patient care and for furthering clinical research. Conventional computergraphicstechniques have been found not to be appropriate in this activity, as such numerous new methodologies have evolved during the past ten years. Much of the past effort has been on visualization, and to a lesser extent on analysis, and there is very little published work on the interactive manipulation of medical objects and its applications. This paper summarizes the authors' new results in this direction.
Good morning. My name is Tim Heidmann and I'd like to welcomeyou all to this panel, which is entitled Future Directions in Desktop Video, and I'd especially like to thank all you people whostayed up a little l...
详细信息
ISBN:
(纸本)0897913531
Good morning. My name is Tim Heidmann and I'd like to welcomeyou all to this panel, which is entitled Future Directions in Desktop Video, and I'd especially like to thank all you people whostayed up a little late on Thursday night to come to this panel. It's really good to see you all out there. I've gotten word that this panel is being transcribed. They'reputting together a booklet, so they're taking the slides and thestills from the videos and all the things that we're saying. So I'djust like to take this opportunity to say hi to the person who'stranscribing this and sorry you couldn't be here today, and Iwanted to let you know that the word of the day is Neopraseodymium, and I hope you've got your scientific dictionary close by. When we first started putting this panel together, I talked tomy friends who were involved in a number of different areas invideo, and the question that came to the forefront very quickly iswhat exactly desktop video is. There's been a lot of talk about it, a lot of magazine articles. It's a good buzz word. But we all feltit incorporated a whole bunch of different areas that weren'teasily put into one category. We did agree that the name of desktop video came from the field of desktop publishing. In desktop publishing, which has been arapidly growing field in the past few years, the whole point isthat we've got a computer bringing together elements from theoutside world, creating elements inside the computer, putting themall together and coming up with a final product. The point is it'sall done inside the computer. Again, it does the things thatcomputers do really well - like text editing and graphics designand layout. And it was made possible by the fact that these highquality printers - laser printers - had come out that you couldproduce a very high quality output from it. Well, on the video side, there is a similar development. Thatis, it's possible now to make video animation completely within thecomputer. There are software packages
Good afternoon, ladies and gentlemen. On behalf of myself and the panelists and SIGGRAPH, I'd like to welcome each of you to oursession this afternoon. This afternoon we're going to be talking about operating ...
详细信息
ISBN:
(纸本)0897913531
Good afternoon, ladies and gentlemen. On behalf of myself and the panelists and SIGGRAPH, I'd like to welcome each of you to oursession this afternoon. This afternoon we're going to be talking about operating systemsand graphics user interfaces. Of course, I'm the panel chairperson. My name - J. Paul Grayson, the chairman and CEO of Micrografx, and I feel very fortunate this afternoon to have a number ofdistinguished speakers here with me. I'd like to briefly introduceeach one of those. As you're probably aware from looking at the program, there havebeen some last minute changes in the speakers. But I think we'revery fortunate to have a number of unique and talented individualswith us this afternoon. So I feel very good about the speakers thatwe have. The first speaker this afternoon is Chris Espinosa, who is atechnical consultant at Apple, but I think that description reallydoesn't do Chris justice at all. Many of you are aware that Chrishas been in the personal computer business about as long as it hasexisted. He was one of the original members of the Home Brewcomputer Club, was actually employee number eight at Applecomputer, and is now the most senior employee at Applecomputer. While at Apple he's had a number of significant accomplishments. He was originally responsible for the Apple II, was on the originalMacintosh development team, was the author of the Macintosh userinterface specifications, and has also been the product manager for Hypercard. The second speaker today will be Martin Dunsmuir, who is thedirector of Presentation Manager development for Microsoft. Martinhas been with Microsoft for approximately four years. He is fromthe U.K., from Britain. So you may notice a slight accent. He waspreviously the director of Zenix Development for Microsoft. He wasresponsible for Zenix 386. He is also responsible for PMX, was part of the technical team that sold the PM behavior, the PM userinterface to the OSF Motif Group, and has been the OS/2Presentation Manager
End users who need to program within highly interactive direct-manipulation interfaces should be able to communicate their intentions through concrete demonstration rather than in terms of symbolic abstraction. This p...
详细信息
暂无评论