Proceedings of the 13th annual conference on Computer graphics and interactive techniques最新文献_第2页

The definition and rendering of terrain maps 地形图的定义和绘制

Proceedings of the 13th annual conference on Computer graphics and interactive techniques Pub Date : 1986-08-31 DOI: 10.1145/15922.15890

G. Miller

引用次数: 303

Anti-aliasing in topological color spaces 拓扑颜色空间的抗混叠

Proceedings of the 13th annual conference on Computer graphics and interactive techniques Pub Date : 1986-08-31 DOI: 10.1145/15922.15920

Ken Turkowski

引用次数: 17

Constructive solid geometry for polyhedral objects 多面体物体的构造立体几何

Proceedings of the 13th annual conference on Computer graphics and interactive techniques Pub Date : 1986-08-31 DOI: 10.1145/15922.15904

D. Laidlaw, W. B. Trumbore, J. Hughes

引用次数: 192

Continuous tone representation of three-dimensional objects illuminated by sky light 由天光照射的三维物体的连续色调表示

Proceedings of the 13th annual conference on Computer graphics and interactive techniques Pub Date : 1986-08-31 DOI: 10.1145/15922.15900

T. Nishita, E. Nakamae

{"title":"Continuous tone representation of three-dimensional objects illuminated by sky light","authors":"T. Nishita, E. Nakamae","doi":"10.1145/15922.15900","DOIUrl":"https://doi.org/10.1145/15922.15900","url":null,"abstract":"Natural lighting models to date have been limited to calculation of direct sunlight. However, this paper proposes an improved model for natural lighting calculations that adequately considers both direct sunlight and scattered light caused by clouds and other forms of water vapor in the air. Such indirect natural light is termed skylight and can be an important factor when attempting to render realistic looking images as they might appear under overcast skies.In the proposed natural lighting model, the sky is considered to be a hemisphere with a large radius (called the sky dome) that acts as a source of diffuse light with nonuniform intensity. In order to adequately take into account the nonuniform intensity of such skylight, the sky dome is subdivided into bands. The light intensity within individual bands can be assumed to be transversely uniform and longitudinally nonuniform and therefore the total luminance emanating from each band can be calculated more accurately.The proposed method significantly improves the realism of natural lighting effects. Its advantages are particularly apparent when simulating lighting under an overcast sky or when rendering surfaces that fall within a shadow cast by an obstruction lit by direct sunlight.","PeriodicalId":20524,"journal":{"name":"Proceedings of the 13th annual conference on Computer graphics and interactive techniques","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1986-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74349788","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: 104

Real-time shaded NC milling display 实时阴影数控铣削显示

Proceedings of the 13th annual conference on Computer graphics and interactive techniques Pub Date : 1986-08-31 DOI: 10.1145/15922.15887

Tim Van Hook

引用次数: 8

Modeling waves and surf 模拟波浪和冲浪

Proceedings of the 13th annual conference on Computer graphics and interactive techniques Pub Date : 1986-08-31 DOI: 10.1145/15922.15893

D. Peachey

引用次数: 281

Fast constructive-solid geometry display in the pixel-powers graphics system 在像素级图形系统中快速构造立体几何显示

Proceedings of the 13th annual conference on Computer graphics and interactive techniques Pub Date : 1986-08-31 DOI: 10.1145/15922.15898

Jack Goldfeather, J. Hultquist, H. Fuchs

{"title":"Fast constructive-solid geometry display in the pixel-powers graphics system","authors":"Jack Goldfeather, J. Hultquist, H. Fuchs","doi":"10.1145/15922.15898","DOIUrl":"https://doi.org/10.1145/15922.15898","url":null,"abstract":"We present two algorithms for the display of CSG-defined objects on Pixel-Powers, an extension of the Pixel-Planes logic-enhanced memory architecture, which calculates for each and every pixel on the screen (in parallel) the value of any quadratic function in the screen coordinates (x,y). The first algorithm restructures any CSG tree into an equivalent, but possibly larger, tree whose display can be achieved by the second algorithm. The second algorithm traverses the restructured tree and generates quadratic coefficients and opcodes for Pixel-Powers. These opcodes instruct Pixel-Powers to generate the boundaries of primitives and perform set operations using the standard Z-buffer algorithm.Several externally-supplied CSG data sets have been processed with the new tree-traversal algorithm and an associated Pixel-Powers simulator. The resulting images indicate that good results can be obtained very rapidly with the new system. For example, the commonly used MBB test part (at right) with 24 primitives is translated into approximately 1900 quadratic equations. On a Pixel-Powers system running at 10MHz (the speed at which our current Pixel-Planes memories run), the image should be rendered in about 7.5 milliseconds.","PeriodicalId":20524,"journal":{"name":"Proceedings of the 13th annual conference on Computer graphics and interactive techniques","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1986-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86874797","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: 123

Combining physical and visual simulation—creation of the planet Jupiter for the film “2010” 物理与视觉相结合的模拟——电影《2010》中木星的创作

Proceedings of the 13th annual conference on Computer graphics and interactive techniques Pub Date : 1986-08-31 DOI: 10.1145/15922.15895

L. Yaeger, C. Upson, R. Myers

{"title":"Combining physical and visual simulation—creation of the planet Jupiter for the film “2010”","authors":"L. Yaeger, C. Upson, R. Myers","doi":"10.1145/15922.15895","DOIUrl":"https://doi.org/10.1145/15922.15895","url":null,"abstract":"By integrating physical simulation, in the form of numerical fluid dynamics, with visual simulation, in the form of particle rendering, texture mapping and traditional polygonal modeling techniques, we have achieved a uniquely realistic and organic special effects sequence of a planetary atmospheric flow. This paper examines the selection, implementation, and application of these techniques, know collectively as VORTEX, to produce the moving images of the planet Jupiter in the film \"2010.\" Details of the generation of the flow field and the fluid dynamic algorithms employed are presented, along with issues relating to the generation and updating of the atmospheric images. We also describe the integration of these techniques with an advanced computer graphics imaging system. The VORTEX system provides a fairly general solution to a class of imaging problems involving two-dimensional fluid flows, and we remark upon its application to other projects. VORTEX, as an example of the marriage of physical simulation to visual simulation, demonstrates the importance of computer graphics to the computational sciences and of the physical sciences to the field of computer graphics.","PeriodicalId":20524,"journal":{"name":"Proceedings of the 13th annual conference on Computer graphics and interactive techniques","volume":"2014 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1986-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78710159","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: 109

A consistent hierarchical representation for vector data 向量数据的一致层次表示

Proceedings of the 13th annual conference on Computer graphics and interactive techniques Pub Date : 1986-08-31 DOI: 10.1145/15922.15908

R. Nelson, H. Samet

引用次数: 132

Free-form deformation of solid geometric models 实体几何模型的自由变形

Proceedings of the 13th annual conference on Computer graphics and interactive techniques Pub Date : 1986-08-31 DOI: 10.1145/15922.15903

T. Sederberg, S. Parry

引用次数: 3044