Proceedings of the 9th annual conference on Computer graphics and interactive techniques最新文献_第5页

Light reflection functions for simulation of clouds and dusty surfaces 光反射功能，模拟云和尘埃表面

Proceedings of the 9th annual conference on Computer graphics and interactive techniques Pub Date : 1982-07-01 DOI: 10.1145/800064.801255

J. Blinn

引用次数: 555

An algorithm and data structure for 3D object synthesis using surface patch intersections 一种基于曲面斑块交叉点的三维目标合成算法和数据结构

Proceedings of the 9th annual conference on Computer graphics and interactive techniques Pub Date : 1982-07-01 DOI: 10.1145/800064.801288

Wayne E. Carlson

{"title":"An algorithm and data structure for 3D object synthesis using surface patch intersections","authors":"Wayne E. Carlson","doi":"10.1145/800064.801288","DOIUrl":"https://doi.org/10.1145/800064.801288","url":null,"abstract":"There are several successful systems that provide algorithms that allow for the intersection of polygonal objects or other primitive shapes to create more complex objects. Our intent is to provide similar algorithms for intersecting surface patches. There have been contributions to this concept at the display algorithm level, that is, computing the intersection at the time the frame is generated. In an animation environment, however, it becomes important to incorporate the intersection in the data generation routines, in order that those parts of the intersected object that never contribute to an image are not processed by the display algorithm. This only increases the complexity of the object unnecessarily, and subsequently puts an additional burden on the display algorithms. An algorithm is described which uses a modified Catmull recursive subdivision scheme to find the space curve which is the intersection of two bicubic patches. An associated data structure is discussed which incorporates this curve of intersection in the patch description in a way suitable for efficient display of the intersected object. Sample output of these intersections are shown which serve to illustrate the capabilities and limitations of the described procedures.","PeriodicalId":276450,"journal":{"name":"Proceedings of the 9th annual conference on Computer graphics and interactive techniques","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131150889","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: 65

The message is the medium: Multiprocess structuring of an interactive paint program 信息是媒介:交互式绘画程序的多进程结构

Proceedings of the 9th annual conference on Computer graphics and interactive techniques Pub Date : 1982-07-01 DOI: 10.1145/800064.801292

Richard J. Beach, J. C. Beatty, K. Booth, D. A. Plebon, E. Fiume

{"title":"The message is the medium: Multiprocess structuring of an interactive paint program","authors":"Richard J. Beach, J. C. Beatty, K. Booth, D. A. Plebon, E. Fiume","doi":"10.1145/800064.801292","DOIUrl":"https://doi.org/10.1145/800064.801292","url":null,"abstract":"An innovative design for an interactive paint program has been developed based on multiple processes and message passing. Traditional paint programs combine interrupt-driven support of a graphical input device, such as a mouse or tablet, with the coloring of pixels in a raster display. We advocate a different design methodology which is illustrated in our implementation. The multiple processes and message passing primitives provided by some real-time operating systems encourage the design of parallel-program architectures and anthropomorphic programming structures, analogous to artist procedures and the metaphors of Smalltalk. The Thoth operating system was used to experiment with such an anthropomorphic design. Thoth provides a hospitable environment in which to investigate the distribution of algorithms between software and microprogrammed hardware processes, the performance and responsiveness of a multiple-process interactive program, and experimental user interfaces using an Ikonas 3000 frame buffer. The paint program consists of processes which handle the graphics tablet, track an iconic cursor, paint a selection of brushes, fill regions of the image, draw lines, and implement the user interface. Some processes have been implemented both in software and microcode.","PeriodicalId":276450,"journal":{"name":"Proceedings of the 9th annual conference on Computer graphics and interactive techniques","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134066114","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: 42

Generation and display of geometric fractals in 3-D 三维几何分形的生成和显示

Proceedings of the 9th annual conference on Computer graphics and interactive techniques Pub Date : 1982-07-01 DOI: 10.1145/800064.801263

Alan Norton

引用次数: 127

Star graphics: An object-oriented implementation 星形图形:一个面向对象的实现

Proceedings of the 9th annual conference on Computer graphics and interactive techniques Pub Date : 1982-07-01 DOI: 10.1145/800064.801270

Daniel E. Lipkie, S. R. Evans, Jack Newlin, Robert L. Weissman

引用次数: 86

A more flexible image generation environment 更灵活的图像生成环境

Proceedings of the 9th annual conference on Computer graphics and interactive techniques Pub Date : 1982-07-01 DOI: 10.1145/800064.801253

F. Crow

引用次数: 77

Anti-aliasing through the use of coordinate transformations 通过使用坐标变换来抗锯齿

Proceedings of the 9th annual conference on Computer graphics and interactive techniques Pub Date : 1982-07-01 DOI: 10.1145/800064.801254

Ken Turkowski

引用次数: 2

Graphical tools for interactive image interpretation 交互式图像解释的图形工具

Proceedings of the 9th annual conference on Computer graphics and interactive techniques Pub Date : 1982-07-01 DOI: 10.1145/800064.801280

D. McKeown, J. L. Denlinger

{"title":"Graphical tools for interactive image interpretation","authors":"D. McKeown, J. L. Denlinger","doi":"10.1145/800064.801280","DOIUrl":"https://doi.org/10.1145/800064.801280","url":null,"abstract":"This paper describes BROWSE, an interactive raster image display facility which is a major component of a larger integrated Map Assisted Photo-interpretation System (MAPS), being developed as a prototype interactive aid for photo-interpretation. Application areas for this research include image cartography, land use studies and reconnaissance, as well as image database organization, storage, and retrieval. BROWSE is a window-oriented display manager which supports raster image display, overlay of graphical data such as map descriptions and image processing segmentations, and the specification and generation of 3D shaded surface models. Digitized imagery from black and white and color aerial mapping photographs is displayed by BROWSE at multiple levels of resolution and allows for dynamic positioning, zooming, expansion or shrinking of the image window. Map data represented as vectors and polygons can be superimposed on the imagery through image-to-map registration. Access to collateral map databases and terrain models may be accomplished using the BROWSE graphical interface. Finally, the window representation gives a convenient communication mechanism for passing image fragments to image interpretation programs, which generally run as separate processes. The results of such processing can be returned to BROWSE for further processing by the user. We will discuss the rationale behind the design of BROWSE as well as its application to domains including aerial photo-interpretation and 3D cartography.","PeriodicalId":276450,"journal":{"name":"Proceedings of the 9th annual conference on Computer graphics and interactive techniques","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132321368","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: 13

Proceedings of the 9th annual conference on Computer graphics and interactive techniques 第九届计算机图形学与交互技术年会论文集

Proceedings of the 9th annual conference on Computer graphics and interactive techniques Pub Date : 1900-01-01 DOI: 10.1145/800064

引用次数: 3