Proceedings of 1997 International Conference on Shape Modeling and Applications最新文献_第2页

Freehand sketch system for 3D geometric modelling 手绘素描系统的三维几何造型

Proceedings of 1997 International Conference on Shape Modeling and Applications Pub Date : 1997-03-03 DOI: 10.1109/SMA.1997.634882

K. Matsuda, S. Sugishita, Zheng Xu, K. Kondo, Hisashi Sato, S. Shimada

{"title":"Freehand sketch system for 3D geometric modelling","authors":"K. Matsuda, S. Sugishita, Zheng Xu, K. Kondo, Hisashi Sato, S. Shimada","doi":"10.1109/SMA.1997.634882","DOIUrl":"https://doi.org/10.1109/SMA.1997.634882","url":null,"abstract":"The paper introduces a new method to deal with sketches for inputting geometric models at a workstation. The sketches are drawn on a CRT screen through a stylus pencil and a tablet by a designer at an early stage in the design procedure. The designer can keep the drawing stylus at a workstation as the same manner as using a pen on paper. The system 'Sketch Interpreter' can correct geometric models in a computer even though input sketches are geometrically distorted. This system can create 3D geometric models in a computer even though input data of 2D sketches are drawn by freehand. The system is constructed in terms of three characteristic procedures on a workstation with a pointing device; (1) to recognize hand sketches on the screen. Freehand lines are drawn by pen operations from which a computer can construct a 3D geometric model. The first operation computes mathematical parameters for the projective transformation; (2) to construct additional geometric models by inputting more sketches drawn perspectively; and (3) to redraw modified geometric models replacing the sketch lines. The interactive methods are suitable for realistically constructing any geometric shapes that a designer imagines. Created data are transferred to an advanced 3D-CAD system. The system is applied as a front-end processor of design practice in fields such as office equipment.","PeriodicalId":413660,"journal":{"name":"Proceedings of 1997 International Conference on Shape Modeling and Applications","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128238167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 22

Recognizing three-dimensional shapes while measuring them 在测量时识别三维形状

Proceedings of 1997 International Conference on Shape Modeling and Applications Pub Date : 1997-03-03 DOI: 10.1109/SMA.1997.634894

Y. Shinagawa, H. Hioki, Jun Morimoto, T. Kunii

引用次数: 0

Experimental study on acceleration of an exact-arithmetic geometric algorithm 一种精确几何算法加速度的实验研究

Proceedings of 1997 International Conference on Shape Modeling and Applications Pub Date : 1997-03-03 DOI: 10.1109/SMA.1997.634893

K. Sugihara

引用次数: 12

Shape abstraction tools for modeling complex objects 用于建模复杂对象的形状抽象工具

Proceedings of 1997 International Conference on Shape Modeling and Applications Pub Date : 1997-03-03 DOI: 10.1109/SMA.1997.634878

B. Falcidieno, M. Spagnuolo

引用次数: 6

Shape integration of multi stereo images using surveyed points for an archaeological site 考古遗址多点立体图像的形状整合

Proceedings of 1997 International Conference on Shape Modeling and Applications Pub Date : 1997-03-03 DOI: 10.1109/SMA.1997.634891

Maki Nagano, Kosuke Sato, K. Chihara

引用次数: 1

Warping as a modelling tool for CSG/implicit models 翘曲作为CSG/隐式模型的建模工具

Proceedings of 1997 International Conference on Shape Modeling and Applications Pub Date : 1997-03-03 DOI: 10.1109/SMA.1997.634898

B. Wyvill, C. V. Overveld

{"title":"Warping as a modelling tool for CSG/implicit models","authors":"B. Wyvill, C. V. Overveld","doi":"10.1109/SMA.1997.634898","DOIUrl":"https://doi.org/10.1109/SMA.1997.634898","url":null,"abstract":"Freeform deformations are useful for describing a class of complex motions within an animation system. Such deformations have been described using a generalization of parametric surfaces and their application to modeling is well documented. We present a method that can be applied to implicit surfaces which are defined as an iso surface around a set of skeletal elements. The resulting surface is approximated by a polygon mesh. Shape distortions, such as \"squash and stretch\" are applied automatically to models in motion by warping the space in which the models exist. A model will change its shape as the function defining the warped space can change over time or the model will deform as it moves through the warped space. Our system also treats groups of skeletal implicit primitives as CSG primitives. Warping can also be applied to these primitives. Different warp functions, for example bend, taper and twist can be applied locally or globally, the contribution from each primitive is calculated using a set of warp functions associated with that primitive. The interesting shapes, and possibly nonlinear motion obtained from space warping, would be difficult to reproduce using other techniques.","PeriodicalId":413660,"journal":{"name":"Proceedings of 1997 International Conference on Shape Modeling and Applications","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126806068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 27

Visual modeling of stomach growth on the basis of L-systems 基于l -系统的胃生长可视化建模

Proceedings of 1997 International Conference on Shape Modeling and Applications Pub Date : 1997-03-03 DOI: 10.1109/SMA.1997.634889

R. Durikovic, K. Kaneda, H. Yamashita

引用次数: 1

Ten questions that arose in designing the Djinn API for solid modelling 在设计用于实体建模的Djinn API时出现的十个问题

Proceedings of 1997 International Conference on Shape Modeling and Applications Pub Date : 1997-03-03 DOI: 10.1109/SMA.1997.634884

A. Bowyer, S. Cameron, G. Jared, Ralph Robert Martin, A. Middleditch, M. Sabin, J. Woodwark

引用次数: 3

3D shape and reflectance morphing 三维形状和反射变形

Proceedings of 1997 International Conference on Shape Modeling and Applications Pub Date : 1997-03-03 DOI: 10.1109/SMA.1997.634901

Yoichi Sato, Imari Sato, K. Ikeuchi

引用次数: 1

The 3D revolution: CAD access for all! 3D革命:CAD访问所有!

Proceedings of 1997 International Conference on Shape Modeling and Applications Pub Date : 1997-03-03 DOI: 10.1109/SMA.1997.634883

J. Rossignac

{"title":"The 3D revolution: CAD access for all!","authors":"J. Rossignac","doi":"10.1109/SMA.1997.634883","DOIUrl":"https://doi.org/10.1109/SMA.1997.634883","url":null,"abstract":"The manufacturing industry has invested vast amounts of resources in the deployment and use of solid modeling technology. Although expensive to generate and potentially very valuable in many product related activities, 3D models have rarely been exploited to support product management, documentation, collaborative review, and promotion, because they were only accessible to trained designers equipped with expensive graphics workstations. Intranet access, popular 3D exchange formats, and affordable 3D graphics chips permit to download and view 3D models using a personal computer. Although these basic capabilities are revolutionizing the entertainment and marketing industry and have reduced the cost of a design station, they are of little help to non-designers in the manufacturing industry. The author articulates a vision where 3D data is available and exploited at all phases of a product life cycle. The paper investigates the shortcomings of the current technology, identifies the fundamental research issues, and reviews recent advances in 3D data compression, in the automatic generation of levels-of-detail for interactive rendering, and in the innovative exploitation of 3D input devices for an intuitive and effective navigation.","PeriodicalId":413660,"journal":{"name":"Proceedings of 1997 International Conference on Shape Modeling and Applications","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117295931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14