Proceedings of the 11th annual conference on Computer graphics and interactive techniques最新文献_第2页

Modeling the interaction of light between diffuse surfaces 模拟光在漫射表面之间的相互作用

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808601

Cindy M. Goral, K. Torrance, D. Greenberg, B. Battaile

引用次数: 1134

Invisibility coherence for faster scan-line hidden surface algorithms 快速扫描线隐藏面算法的不可见相干性

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808584

Gary A. Crocker

{"title":"Invisibility coherence for faster scan-line hidden surface algorithms","authors":"Gary A. Crocker","doi":"10.1145/800031.808584","DOIUrl":"https://doi.org/10.1145/800031.808584","url":null,"abstract":"Invisibility coherence is a new technique developed to decrease the time necessary to render shaded images by existing scan-line hidden surface algorithms. Invisibility coherence is a technique for removing portions of a scene that are not likely to be visible. If a large portion of the scene is invisible, as is often the case in three-dimensional computer graphics, the processing time eliminated may be substantial. Invisibility coherence takes advantage of the observation that a minimal amount of processing needs to be done on objects (polygons, patches, or surfaces) that will be hidden by other objects closer to the viewer. This fact can be used to increase the efficiency of current scan-line algorithms, including both polygon-based and parametrically curved surface-based algorithms. Invisibility coherence was implemented and tested with the polygon hidden surface algorithm for constructive solid geometry developed by Peter Atherton [1]. The use of invisibility coherence substantially increases the efficiency of this scan-line algorithm. Invisibility coherence should work as well or even better with other scan-line hidden surface algorithms, such as the Lane-Carpenter, Whitted, and Blinn algorithms for parametrically curved surfaces [2]., or the Watkins, Romney, and Bouknight algorithms for polygons [3, 4, 5].","PeriodicalId":113183,"journal":{"name":"Proceedings of the 11th annual conference on Computer graphics and interactive techniques","volume":"27 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":"123896787","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: 30

Computer graphics in commercial and broadcast production (Panel) 商业和广播制作中的计算机图形学(专题讨论)

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808599

Carl Rosendahl

引用次数: 0

A retrospective (Panel): Six perennial issues in computer graphics 回顾(小组讨论):计算机图形学的六个长期问题

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808579

R. M. Dunn

{"title":"A retrospective (Panel): Six perennial issues in computer graphics","authors":"R. M. Dunn","doi":"10.1145/800031.808579","DOIUrl":"https://doi.org/10.1145/800031.808579","url":null,"abstract":"Graphics has been an industry for more than 15 years. Some workers trace its origins almost )0 years. The dramatic gains in silicon technology along with more highly developed understanding of the mathematics of graphics have transformed the architecture of computer graphic systems and produced a bewildering array of products and services. This retrospective panel will try to put several key things in perspective. Dr. Alan Kay, recently of Atari Computer and currently an Apple Fellow, will characterize the role of graphics in the overall world of computing and information processing. Carl Machover of Machover Associates will trace the development of display technology and its employment in computer graphics systems. Dr. David Evan, Chairman of the Board of Evans and Sutherland will create the retrospective on our ability to produce realism in imagery. In turn Dr. Robert Sproull, Sutherland, Sutherland and Associates will trace the development of transformation that have found their way into silicon technology. Dr. James Foley, of George Washington University will track our progress in the technology of interaction, while Dr. Robin Forrest of the University of East Angela will trace geometric modeling and Dr. Ed Cattail, Director of Development at Lucasfilm will put our progress in animation in perspective.","PeriodicalId":113183,"journal":{"name":"Proceedings of the 11th annual conference on Computer graphics and interactive techniques","volume":"6 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":"114999080","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: 0

Computing in the fast lane (Panel): Supersystems for computer graphics 快车道上的计算(面板):计算机图形的超级系统

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808578

R. Weinberg

引用次数: 0

Beam tracing polygonal objects 光束跟踪多边形物体

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808588

Paul S. Heckbert, P. Hanrahan

{"title":"Beam tracing polygonal objects","authors":"Paul S. Heckbert, P. Hanrahan","doi":"10.1145/800031.808588","DOIUrl":"https://doi.org/10.1145/800031.808588","url":null,"abstract":"Ray tracing has produced some of the most realistic computer generated pictures to date. They contain surface texturing, local shading, shadows, reflections and refractions. The major disadvantage of ray tracing results from its point-sampling approach. Because calculation proceeds ab initio at each pixel it is very CPU intensive and may contain noticeable aliasing artifacts. It is difficult to take advantage of spatial coherence because the shapes of reflections and refractions from curved surfaces are so complex. In this paper we describe an algorithm that utilizes the spatial coherence of polygonal environments by combining features of both image and object space hidden surface algorithms. Instead of tracing infinitesimally thin rays of light, we sweep areas through a scene to form “beams.” This technique works particularly well for polygonal models since for this case the reflections are linear transformations, and refractions are often approximately so. The recursive beam tracer begins by sweeping the projection plane through the scene. Beam-surface intersections are computed using two-dimensional polygonal set operations and an occlusion algorithm similar to the Weiler-Atherton hidden surface algorithm. For each beam-polygon intersection the beam is fragmented and new beams created for the reflected and transmitted swaths of light. These sub-beams are redirected with a 4×4 matrix transformation and recursively traced. This beam tree is an object space representation of the entire picture. Since the priority of polygons is pre-determined, the final picture with reflections, refractions, shadows, and hidden surface removal is easily drawn. The coherence information enables very fast scan conversion and high resolution output. Image space edge and texture antialiasing methods can be applied.","PeriodicalId":113183,"journal":{"name":"Proceedings of the 11th annual conference on Computer graphics and interactive techniques","volume":"368 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":"125695526","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: 455

International market opportunities (Panel) 国际市场机会(小组)

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808587

Philip G. Husby

引用次数: 1

Automatic synthesis of graphical object descriptions 图形对象描述的自动合成

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808577

M. Friedell

引用次数: 40

Ray tracing of Steiner patches 斯坦纳补丁的光线追踪

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808593

T. Sederberg, David C. Anderson

引用次数: 47

Compositing digital images 合成数字图像

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI: 10.1145/800031.808606

Thomas K. Porter, Tom Duff

引用次数: 1556