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计算机图形 COMPUTER GRAPHIC

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引言
无论是通过传输比特存储在电脑晶片或透过语音交谈,科学,技术,艺术,商业,工业的发展总是依赖于我们沟通信息的能力。人类很幸运,已经开发出一个高度复杂的视觉系统。100多年前有这样一句格言:"一个图片拥有10000个字:",肯定至今依然有效。它并不奇怪,几乎在数码电脑出现时,研究人员试图用它在屏幕上的阴极射线管来制作图像,过去40年期间,电子数码电脑发生了变化,我们的计算机生成图像的能力已经上升到道一个新的地步,现在连最基本的电脑,都自带有一些画图形的功能。
利用计算机图形学贯穿于许多不同的领域。从应用范围从生产的图表,产生实际的图像,影视和中影向交互设计的机械零件等。包含所有这些用途之外,我们可以采用一个简单的定义:
计算机图形学是有关各方面利用计算机生成图像。 (毕业设计)
根据这一定义,计算机图形学,包括硬件设计,如显示器,算法,是要产生线条这些显示器,该软件是用两种图形系统编程和应用程式,以及应用程序的计算机所产生的图像。
我们可以采取很多方式来学习计算机图形学,在一个特定的范围,从研究图形硬件学习只可使用计算机图形学,例如很大规模集成电路(超大规模集成电路)设计,我们采取的方式是向看看在外地的角度出发的应用程式。以用户的计算机图形来说,更好的硬件和软件已成为可用,学习计算机图形学,已成为重要的,,因为这是设计者的图形系统。现代图形工作站允许用户设计自己的应用程序使用先进的图形系统,而不是thaving呼吁软件向导。反过来说,同样的方法,往往是宝贵的硬件设计和系统程序员,因为他们必须执行职能所产生的,从需求的应用。
应用计算机图形学
我们可以归类应用计算机图形学分成四个主要领域:
。信息展示
。设计
。仿真
。用户界面

COMPUTER GRAPHIC
INTRODUCTION
The development of science, technology, the arts, business, and industry has always been dependent on our ability to communicate information, whether via transmission of bits stored on a microchip or through voice conversation .Humans are fortunate to have developed a highly complex visual system .The adage "one picture is worth 10,000 words" is certainly as valid today as it was 100 years ago .It is thus not surprising that almost as soon as the digital computer appeared, researchers attempted to use it to produce images on the screen of a cathode-ray tube .Over the 40 years during which electronic digital computers have evolved, our ability to produce computer-generated images has increased to the point that now even the most basic of computers have some graphics capabilities .
The use of computer graphics pervades many diverse fields .Applications range from the production of charts and graphs, to the generation of realistic images for television and motion pictures to the interactive design of mechanical parts .To encompass all these uses, we can adopt a simple definition:
Computer graphics is concerned with all aspects of using a computer to generate images .
Under this definition, computer graphics includes the design of hardware such as displays, the algorithms that are necessary to generate lines on these displays,the software that is used by both the graphics-system programmer and the application programmer, and the applications of computer-generated images .
We can take many approaches to the study of computer graphics,ranging from examining graphics hardware to studying only the use of computer graphics in a specific area, such as very-large-scale-integrated circuit(VLSI)design .Our approach will be to look at the field from the perspective of the application programmer .As better and better hardware and software have become available, the study of computer graphics has become as important to the user of computer graphics as it is to the designer of the graphics system .The modern graphics workstation allows the user to design her own applications using sophisticated graphics systems, rather than thaving to call on a software wizard . Conversely, the same approach is often valuable to the hardware designer and systems programmer, as they must implement functions that arise from the demands of the application .
APPLICATIONS OF COMPUTER GRAPHICS
We can classify applications of computer graphics into four main areas:
. Display of information
. Design
. Simulation
. User interfaces

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