ISSN:1049-8907    

DOI:10.1002/vis.4340020302

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractWe propose an integrated set of methods for designing and animating bodies whose deformable flesh coats an articulated skeleton. The proposed methods provide good automatic positioning of the ‘skin’ after movements, and automatic deformation after collisions with rigid or deformable objects (dynamic or static). The response to collisions includes a feedback from the flesh to the skeleton, whose movement is adequately modified. Moreover, coating the skeleton gives an easy solution to closed loop collisions and angle constraints control. Our model is modular and gives some high level control to the u

ISSN:1049-8907    

DOI:10.1002/vis.4340020303

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

ISSN:1049-8907    

DOI:10.1002/vis.4340020304

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractA technique is described for adding natural‐looking hair to standard rendering algorithms. Using an explicit hair model, in which each individual hair is represented by a three‐dimensional curve, the technique uses pixel blending combined with Z‐buffer and shadow buffer information from the scene to yield a final anti‐aliased image with soft shadows. Although developed for rendering human hair, this technique can also be used to render any model consisting of long filaments of sub‐pixel width. The technique can be adapted to any rendering method that outputs Z‐buffer and shadow buffer information and is amenable to hardware imp

ISSN:1049-8907    

DOI:10.1002/vis.4340020305

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

ISSN:1049-8907    

DOI:10.1002/vis.4340020306

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractThis paper presents the application of inverse Lagrangian dynamics for the purpose of animating articulated models. The method orginates from mechanics and robotics and has been adapted to deal with branched kinematic chains and joints with multiple degrees of freedom. The method is then reformulated to calculate the ground reaction forces that apply to the body. The approach is direct and does not involve guesswork. The formulation has been implemented into a general animation system that is entirely interactive and supports the facility of simulating generic articulated models.

ISSN:1049-8907    

DOI:10.1002/vis.4340020307

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractFrom ‘virtual worlds’ to ‘artificial realities’, from ‘cyberspace’ to ‘multisensory sythetic environments’, there is no lack of colourful expressions to describe one of the most recent and the most promising developments of computer graphics. Indeed, this is a radically new tool for representing the world, capable of permanently changing our way of looking at things and the way we work, as well as the familiar concept of ashow. What is the definition of a ‘virtual environment’? It is an artificial space, visualized through techniques of synthetic imagery, and in which we can ‘physically’ move about. This impression of ‘physical movement’ is produced by theconcurrenceof two sensory stimuli, one based on fully stereoscopic vision and the other on the so‐called ‘proprioceptive’ sensation of muscular correlation between real bodily movements and apparent changes in the artificial

ISSN:1049-8907    

DOI:10.1002/vis.4340020308

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

ISSN:1049-8907    

DOI:10.1002/vis.4340020301

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY