Proceedings of the 11th annual conference on Computer graphics and interactive techniques最新文献_第4页

Plants, fractals, and formal languages 植物、分形和形式语言

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808571

A. R. Smith

{"title":"Plants, fractals, and formal languages","authors":"A. R. Smith","doi":"10.1145/800031.808571","DOIUrl":"https://doi.org/10.1145/800031.808571","url":null,"abstract":"Although fractal models of natural phenomena have received much attention recently, there are other models of complex natural objects which have been around longer in Computer Imagery but are not widely known. These are procedural models of plants and trees. An interesting class of these models is presented here which handles plant growth, sports an efficient data representation, and has a high “database amplification” factor. It is based on an extension of the well-known formal languages of symbol strings to the lesser-known formal languages of labeled graphs. It is so tempting to describe these plant models as “fractal” that the similarities of this class of models with fractal models are explored in an attempt at rapprochement. The models are not fractal so the common parts of fractal theory and plant theory are abstracted to form a class of objects, the graftals. This class may prove to be of great interest to the future of Computer Imagery. Determinism is shown to provide adequate complexity, whereas randomness is only convenient and often inefficient. Finally, a nonfractal, nongraftal family of trees by Bill Reeves is introduced to emphasize some of the paper's nongrammatical themes.","PeriodicalId":113183,"journal":{"name":"Proceedings of the 11th annual conference on Computer graphics and interactive techniques","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1984-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126553874","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: 462

Efficient octree conversion by connectivity labeling 通过连通性标记的高效八叉树转换

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808576

Markku Tamminen, H. Samet

引用次数: 71

Computer-integrated manufacturing in Japan (Panel) 日本的计算机集成制造(面板)

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808574

T. Kunii

{"title":"Computer-integrated manufacturing in Japan (Panel)","authors":"T. Kunii","doi":"10.1145/800031.808574","DOIUrl":"https://doi.org/10.1145/800031.808574","url":null,"abstract":"Recent progress in Japanese computer-integrated manufacturing (CIM) includes the integration of computer graphics, database management systems, local area networks, robotics and software engineering technology. This panel will discuss advanced CAD, CAM CAT (computer-aided testing) and FMS (flexible manufacturing systems) available in Japan. After the overview by the Chair Prof. Kunii, the basic CIM related researches to support industrial applications will be explained by Prof. Nakajima of the University of Tokyo. A wide spectrum of recent industrial advances and future trends in Japanese CIM are covered by four panelists from reputed manufacturers and users of CIM facilities and equipments. As one of the features of Japanese CIM, it will be noticed throughout the panel presentations and discussions that manufacturers always send out their products into the market after extensive internal use of them. Mr. Kubo of Hitachi Omika Work will present new networked CIM workstation. A typical example of very large CIM will be shown by Mr. Nakagawa of Mitsui Engineering and Shipbuilding. Very aggressive lines of products and plans are expected from Fanuc and will be presented by Mr. Inaba of GM Fanuo Robotics. Mr. Nishioka of Sharp will conclude the session explaining how he has developed and marketed very practical CIM successfully.","PeriodicalId":113183,"journal":{"name":"Proceedings of the 11th annual conference on Computer graphics and interactive techniques","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1984-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133516869","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: 1

The storage, retrieval and display of integrated graphics and text (Panel) 图文一体的存储、检索和显示(面板)

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808607

R. Earnshaw

引用次数: 0

A family of new algorithms for soft filling 一组新的软填充算法

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808604

K. Fishkin, B. Barsky

引用次数: 29

A programmer's interface to graphics dynamics 一个程序员的图形动力学界面

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808608

J. Turner

引用次数: 5

Shade trees 遮荫树

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808602

R. L. Cook

引用次数: 492

Manipulating simulated objects with real-world gestures using a force and position sensitive screen 使用力和位置敏感屏幕，用真实世界的手势操纵模拟对象

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808598

M. Minsky

引用次数: 75

Nova*gks, a distributed implementation of the Graphical Kernel System Nova*gks，图形内核系统的分布式实现

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808610

Clinton N. Waggoner, C. Tucker, Christopher J. Nelson

引用次数: 7

A parallel processor system for three-dimensional color graphics 三维彩色图形并行处理系统

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808580

Haruo Niimi, Y. Imai, Masayoshi Murakami, S. Tomita, H. Hagiwara

{"title":"A parallel processor system for three-dimensional color graphics","authors":"Haruo Niimi, Y. Imai, Masayoshi Murakami, S. Tomita, H. Hagiwara","doi":"10.1145/800031.808580","DOIUrl":"https://doi.org/10.1145/800031.808580","url":null,"abstract":"This paper describes the hardware architecture and the employed algorithm of a parallel processor system for three-dimensional color graphics. The design goal of the system is to generate realistic images of three-dimensional environments on a raster-scan video display in real-time. In order to achieve this goal, the system is constructed as a two-level hierarchical multi-processor system which is particularly suited to incorporate scan-line algorithm for hidden surface elimination. The system consists of several Scan-Line Processors (SLPs), each of which controls several slave PiXel Processors (PXPs). The SLP prepares the specific data structure relevant to each scan line, while the PXP manipulates every pixel data in its own territory. Internal hardware structures of the SLP and the PXP are quite different, being designed for their dedicated tasks. This system architecture can easily execute scan-line algorithm in parallel by partitioning the entire image space and allotting one processor element to each partition. The specific partition scheme and some new data structures are introduced to exploit as much parallelism as possible. In addition, the scan-line algorithm is extended to include smooth-shading and anti-aliasing with the aim of rendering more realistic images. These two operations are performed on a per-scan-line basis so as to preserve scan-line and span coherence. Performance estimation of the system shows that a typical system consisting of 8 SLPs and 8×8 PXPs can generate, in every 1/15th of a second, the shadowed image of a three-dimensional scene containing about 200 polygons.","PeriodicalId":113183,"journal":{"name":"Proceedings of the 11th annual conference on Computer graphics and interactive techniques","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1984-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116900468","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: 28