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3-D图形标准竞赛遇到了一个始料未及的转折。Microsoft收购了RenderMorphics,它是一家只有10个雇员的软件公司,Microsoft也许可以从此控制一个十分强大的具有伸缩余地的3-D应用程序编程接口(API)。对于将先进的3-D技术从游戏和工作站应用转移到消费者及企业PC应用,这是漫长道路上的一个重大进步。 与此同时,Apple正急于使其OuickDraw 3D API同时适用于Macin- 相似文献
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企业通过使用内部Web服务器为他们的雇员提供了访问企业信息的方便途径,然而Intranet又是如何赶上现有群件应用程序的呢? 相似文献
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realrocking 《中国图象图形学报》2003,8(1):64-65
从本期起,CG Review将特别推出专题Review,以系统介绍CG中的专门领域。先号召一下,欢迎各位身怀“绝技”的发烧友们来此一展拳脚!投稿Mail:shitao@newcg.com。今天首先出场的是realrocking主持的Web 3d。 相似文献
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全球首款22nm微处理器(Ivy Bridge)将采用3.D三栅极晶体管进行批量生产;世界上首款3-D三栅极晶体管进入生产阶段; 相似文献
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This article deals with topological concepts and models which are necessary to represent three-dimensional urban objects in a geographical information system (GIS). Depending on the shape and the representation of features, several classes with increasing topological complexity are identified and described. This complexity has strong impacts on the models and tools which are required to represent, manage and edit the data. One specific model we call 2.8-D map is identified, which covers many 3-D applications in GIS. It is a slight extension of a 2-D or 2.5-D model and preserves the algorithmic and conceptual simplicity of the 2-D case as much as possible. The model is described in a formal way. Integrity axioms are given, which detect errors in corresponding data sets safely and guarantee the consistency of 2.8-D maps in a mathematically sound and provable way. These axioms are effectively and efficiently checkable by automatic procedures. The model extends digital terrain models (2.5-D) by allowing for vertical walls and projections like balconies or ledges. The conceptual simplicity is due to the two-dimensional topology of the model. Thus bridges and tunnels are special cases; it is shown how to detect and handle these cases efficiently. Based on this model, thematic objects and their aggregation structures are defined in a consistent way. 相似文献
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Computer systems are increasingly being used for sports training. Existing sports training systems either require expensive 3-D motion capture systems or do not provide intelligent analysis of user’s sports motion. This paper presents a framework for affordable and intelligent sports training systems for general users. The user is assumed to perform the same type of sport motion as an expert, and therefore the performer’s motion is more or less similar to the expert’s reference motion. The performer’s motion is recorded by a single stationary camera, and the expert’s 3-D reference motion is captured only once by a commercial motion capture system. Under such assumptions, sports motion analysis is formulated as a 3-D–2-D spatiotemporal motion registration problem. A novel algorithm is developed to perform spatiotemporal registration of the expert’s 3-D reference motion and a performer’s 2-D input video, thereby computing the deviation of the performer’s motion from the expert’s motion. The algorithm can effectively handle ambiguous situations in a single video such as depth ambiguity of body parts and partial occlusion. Test results on Taichi and golf swing motion show that, despite using only single video, the algorithm can compute 3-D posture errors that reflect the performer’s actual motion error. 相似文献
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在电脑显示器方面,我们观察的是二维平面。对于字处理和电子表格,三维立体画面或许没有必要,但其它应用领域(例如虚拟 相似文献
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网络已从阅读信息的方式演变发展为交互式、个性化且可编程的媒介。本文在此深入探讨如何从Web 2.0技术中获益。 相似文献
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GRAEME AYMER 《计算机光盘软件与应用》2006,(4):25-30
Shockwave的典型运用。这个出版商Prentice Hall的教育性网站旨在让学生们了解物理的原理。用户调整弹弓就可以用画球点击某个目标。 相似文献
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乔布斯说:"活着就是为了改变世界,难道还有其他原因吗?"2008年,在Web前端开发界,无论国外还是国内,都发生了不少事情,有哪些是改变世界或即将改变世界的大事件呢? 相似文献
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《每周电脑报》1997,(45)
微软公司的FrontPage 98同时拥有功能强大和使用方便两大优点。以前要想兼顾这两大优点,就象在拉紧的绳索上面行走一样危险,而微软公司开发的FrontPage 98软件使这种危险的行走变成了在公园里的休闲漫步。 ZD实验室对该软件的发行版本进行了测试。这个版本所做的最显著的改进,就是提供了一个拖拽式的web节点视图,这个改进使它赢得了“分析家之选择”奖。该视图允许我们在测试节点上非常方便地重新安排页面。它具有通用的页面风格,允许我们只需花最小的代价,就能够应用和确保页面在外观上的一致性。此外它还能够自动产生导航条。 FrontPage 98能够在Windows 95或者Windows 相似文献
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19年前,世界上第一个网页诞生,它没有设计可言,由文本和url组成,样式只有最基本的〈h1〉〈p〉。而如今,Web设计已经成长为独立而庞大的设计门类,一个网页的创造需要多个工种、多种技术的参与,其流程的复杂性和挑战性已经超过任何传统设计类别。 相似文献
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