手机APP下载

您现在的位置: 首页 > 行业英语 > 计算机英语 > 计算机专业英语教程 > 正文

计算机专业英语教程第2版 第25期:graphic和image的概念

来源:可可英语 编辑:clover   可可英语APP下载 |  可可官方微信:ikekenet

Image or Graphic? Technically, neither. If you really want to be strict, computer pictures are files, the same way WORD documents or solitaire games are files. They're all a bunch of ones and zeros all in a row. But we do have to communicate with one another so let's decide.

是graphic还是image呢?从技术上说都不是。从严格意义上来说,计算机图像是文件,就像Word文档或纸牌游戏是文件一样。它们都是由很多1和0排成的数据。但是我们需要互相交流,所以要确定名称。
Image. We'll use "image". That seems to cover a wide enough topic range.
“image”。我们要使用“image”的概念。这一概念似乎覆盖了非常广泛的话题范围。
"Graphic" is more of an adjective, as in "graphic format." we denote images on the Internet by their graphic format. GIF is not the name of the image. GIF is the compression factors used to create the raster format set up by CompuServe.
“graphic”更多的情况是作形容词用,例如“绘图的格式”。用绘图的格式来表示Internet 中的图像。GIF不是映像的名字.而是用来生成通过CompuServe建立的光栅格式的压缩因子。
So, they're all images unless you're talking about something specific.
所以除非被用来讨论专用的事物,否则它们都是图像。
The images produced in Drawing programs (CorelDraw, Illustrator, Freehand, Designer etc) are called vectorised graphics. That is, all of the objects shown on the computer monitor are representations of points and their relationship to each other on the work area, each of which is stored in the computer as simple values and mathematical equations depicting: the relationship between each point and the next point referenced to it, and the position (vector) of each point referenced to a starting corner of the work area.
绘图程序(CorelDraw、Illustrator, Freehand、Designer等)生成的图像都被称为矢量化图形。也就是说,在计算机监视器示的所有对象都是工作区域内的点和它们之间相互关系的表示,每一点都作为简单值或数学公式存储在计算机里,其中数学公式用来描述每个点和参照该点的下一个点之间的关系和参照工作区域开始角的每个点的位置(矢量)。
Bitmap pictures are stored as a vertical and horizontal array of Pixels and stored information represents the colour of each of these pixels. The resolution of a bitmap picture describes how many of these pixels exist over a set distance, usually horizontally: ie pixels per inch or pixels per centimetre. An unaltered bitmap picture of 300 pixels / inch enlarged by 1000% will therefore still have the same number of pixels across the actual picture area but each represented pixel will cover a larger area.
位图图像存储为垂直和水平排列的像素,存储的像素信息表示每个像素的颜色。位图图像的清晰度描述在一个特定距离(通常指水平距离)存在着多少像素:即像素数/英寸或像素数/厘米。一个未改变的300像素/英寸的位图图像放大10倍后在实际的图像范围内将会有相同的像素数目,但每一个表示出的像素将会覆盖更大的范围。
At such an enlargement, the picture would be of little use for reproduction unless viewed from quite a long distance.
在这样一个放大的图片里,图像无法用于再现,除非从相当远的距离外观看。
Bitmap or Photo-retouching programs are correctly called PAINTING PROGRAMS.
位图或照片润色程序的正确叫法为画图程序。
Vectorised drawings on the other hand can be enlarged as much as desired because, although the above mentioned points on a drawing would be further apart, the relationship of any described line between the points would always be the same. A single company logo file produced in a Drawing program could be used for a business card, any brochure or poster, or plotting out to a Screen Print stencil 3 metres (9 feet) wide, where as bitmap files would have to be created for every size used if practicable.
另一方面,矢量化的图画可以按要求尽量放大。因为,尽管上面提到的图画上的点可以相隔得很远,但点之间任一描述线之间的关系是相同的。也就是说,画图程序产生的一个单独的公司标语文件可以用来作为名片、小册子或海报,或绘制到一个3米(9英尺) 宽的打卬模板上,如果可行,需要为每个可用尺寸建立位图文件。
What is raster, vector, metafile, PDL, VRML, and so forth?
光栅、矢量、图元文件、PDL、VRML等是什么呢?
These terms are used to classify the type of data a graphics file contains.
这些术语用来划分一个图像文件含有数据的种类。
Raster files (also called bitmapped files) contain graphics information described as pixels, such as photographic images. Vector files contain data described as mathematical equations and are typically used to store line art and CAD information. Metafiles are formats that may contain either raster or vector graphics data. Page Description Languages (PDL) are used to describe the layout of a printed page of graphics and text.
光栅文件也被称为位图文件,包含以像素描述的图像信息,例如摄影图像。欠量文件含有被描述为数学等式的数据,并通常用来存储矢量图或CAD信息。图元文件包含有光栅或矢量图数据。页而描述语言(PDL)被用来描述图形或文本打印页面的版面设置。
Animation formats are usually collections of raster data that is displayed in a sequence. Multi-dimensional object formats store graphics data as a collection of objects (data and the code that manipulates it) that may be rendered (displayed) in a variety of perspectives. Virtual Reality Modeling Language (VRML) is a 3D, object-oriented language used for describing "virtual worlds" networked via the Internet and hyperlinked within the World Wide Web. Multimedia file formats are capable of storing any of the previously mentioned types of data, including sound and video information.
动画格式通常是以序列显示的光栅数据集。多维对象格式将图像数据作为在各种视角下表示(展示)的对象集(数据及操作数据的代码)存储起来。VRML (虚拟现实建模语言)是用来描述通过Internet联网或全球网链接的“虚拟世界”的三维面向对象的语言。多媒体文件格式可以存储前面提到的任一种数据,包括声音和视频信息。

重点单词   查看全部解释    
designer [di'zainə]

想一想再看

n. 设计者

联想记忆
screen [skri:n]

想一想再看

n. 屏,幕,银幕,屏风
v. 放映,选拔,掩

 
contain [kən'tein]

想一想再看

vt. 包含,容纳,克制,抑制
vi. 自制

联想记忆
stencil ['stensl]

想一想再看

n. 模版,型版,蜡纸 vt. 用模版印刷

联想记忆
collection [kə'lekʃən]

想一想再看

n. 收集,收取,聚集,收藏品,募捐

联想记忆
describe [dis'kraib]

想一想再看

vt. 描述,画(尤指几何图形),说成

联想记忆
cad [kæd]

想一想再看

n. 无赖,下流人;下流男子,卑鄙的男人

 
specific [spi'sifik]

想一想再看

adj. 特殊的,明确的,具有特效的
n. 特

联想记忆
unaltered [,ʌn'ɔ:ltəd]

想一想再看

adj. 不变的;未被改变的;照旧的

 
strict [strikt]

想一想再看

adj. 严格的,精确的,完全的

 

发布评论我来说2句

    最新文章

    可可英语官方微信(微信号:ikekenet)

    每天向大家推送短小精悍的英语学习资料.

    添加方式1.扫描上方可可官方微信二维码。
    添加方式2.搜索微信号ikekenet添加即可。