Proceedings of the 12th annual conference on Computer graphics and interactive techniques最新文献_第3页

Construction of fractal objects with iterated function systems 用迭代函数系统构造分形对象

Proceedings of the 12th annual conference on Computer graphics and interactive techniques Pub Date : 1985-07-01 DOI: 10.1145/325334.325245

S. Demko, Laurie Hodges, B. Naylor

{"title":"Construction of fractal objects with iterated function systems","authors":"S. Demko, Laurie Hodges, B. Naylor","doi":"10.1145/325334.325245","DOIUrl":"https://doi.org/10.1145/325334.325245","url":null,"abstract":"In computer graphics, geometric modeling of complex objects is a difficult process. An important class of complex objects arise from natural phenomena: trees, plants, clouds, mountains, etc. Researchers are at present investigating a variety of techniques for extending modeling capabilities to include these as well as other classes. One mathematical concept that appears to have significant potential for this is fractals. Much interest currently exists in the general scientific community in using fractals as a model of complex natural phenomena. However, only a few methods for generating fractal sets are known. We have been involved in the development of a new approach to computing fractals. Any set of linear maps (affine transformations) and an associated set of probabilities determines an Iterated Function System (IFS). Each IFS has a unique \"attractor\" which is typically a fractal set (object). Specification of only a few maps can produce very complicated objects. Design of fractal objects is made relatively simple and intuitive by the discovery of an important mathematical property relating the fractal sets to the IFS. The method also provides the possibility of solving the inverse problem. given the geometry of an object, determine an IFS that will (approximately) generate that geometry. This paper presents the application of the theory of IFS to geometric modeling.","PeriodicalId":163416,"journal":{"name":"Proceedings of the 12th annual conference on Computer graphics and interactive techniques","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116702340","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: 84

Aesthetics of computer graphics (panel session) 计算机图形美学(小组讨论)

Proceedings of the 12th annual conference on Computer graphics and interactive techniques Pub Date : 1985-07-01 DOI: 10.1145/325334.325257

M. Nadin, C. Csuri, F. Dietrich, Thomas E. Linehan, H. Kawano

引用次数: 0

The University of Alberta user interface management system 阿尔伯塔大学用户界面管理系统

Proceedings of the 12th annual conference on Computer graphics and interactive techniques Pub Date : 1985-07-01 DOI: 10.1145/325334.325286

Mark W. Green

引用次数: 150

Approximate and probabilistic algorithms for shading and rendering structured particle systems 用于着色和渲染结构粒子系统的近似和概率算法

Proceedings of the 12th annual conference on Computer graphics and interactive techniques Pub Date : 1985-07-01 DOI: 10.1145/325334.325250

W. Reeves, R. Blau

引用次数: 525

Compositing 3-D rendered images 合成3d渲染图像

Proceedings of the 12th annual conference on Computer graphics and interactive techniques Pub Date : 1985-07-01 DOI: 10.1145/325334.325174

Tom Duff

引用次数: 121

The drawing prism: a versatile graphic input device 绘图棱镜:一种多功能图形输入装置

Proceedings of the 12th annual conference on Computer graphics and interactive techniques Pub Date : 1985-07-01 DOI: 10.1145/325334.325202

R. Greene

{"title":"The drawing prism: a versatile graphic input device","authors":"R. Greene","doi":"10.1145/325334.325202","DOIUrl":"https://doi.org/10.1145/325334.325202","url":null,"abstract":"Artists using conventional computer graphic input devices cannot produce the same visual effects which they can with traditional tools and media. The drawing prism is a new device which allows people to draw or paint directly into a frame buffer, using brushes, their hands, or a variety of other objects. These objects can be manipulated to achieve continuously adjustable line qualities and textures, in the same ways that artists have traditionally used their hands and tools.The device uses one face of a large transparent prisms as a drawing surface. A video camera views that surface from an angle such that it can only image the points of optical contact between drawing tools and the surface. These images are digitized and processed in real time so as to build up a drawing as the tools are moved along the surface. A layer of transparent liquid helps tools make optical contact with the drawing surface. Any light colored object can thus be used as a drawing tool.Details of the current implementation are provided along with suggestions for improving its resolution. Combinations of visual effects previously restricted to either traditional media or computer graphics are described and illustrated.","PeriodicalId":163416,"journal":{"name":"Proceedings of the 12th annual conference on Computer graphics and interactive techniques","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127052438","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: 51

Antialiasing through stochastic sampling 通过随机抽样进行抗混叠

Proceedings of the 12th annual conference on Computer graphics and interactive techniques Pub Date : 1985-07-01 DOI: 10.1145/325334.325182

Mark A. Z. Dippé, E. Wold

引用次数: 467

Parametric keyframe interpolation incorporating kinetic adjustment and phrasing control 参数关键帧插值结合动力学调整和措辞控制

Proceedings of the 12th annual conference on Computer graphics and interactive techniques Pub Date : 1985-07-01 DOI: 10.1145/325334.325243

Scott N. Steketee, N. Badler

引用次数: 146

Modeling the mighty maple 塑造强大的枫树

Proceedings of the 12th annual conference on Computer graphics and interactive techniques Pub Date : 1985-07-01 DOI: 10.1145/325334.325249

J. Bloomenthal

引用次数: 317

Font formats (panel session) 字体格式(小组讨论)

Proceedings of the 12th annual conference on Computer graphics and interactive techniques Pub Date : 1985-07-01 DOI: 10.1145/325334.325256

C. Bigelow, P. Coueignoux, J. Hobby, Peter Karow, V. Pratt, Luis Trabb Pardo, J. E. Warnock

引用次数: 0