bitmap

简明释义

英[ˈbɪtmæp]美[ˈbɪtmæp]

n. [计] 位图，位映像

复 数 b i t m a p s

第 三 人 称 单 数 b i t m a p s

现 在 分 词 b i t m a p p i n g

过 去 式 b i t m a p p e d

过 去 分 词 b i t m a p p e d

英英释义

单词用法

同义词

反义词

例句

1.The corresponding bitmap must be at least 50 x 50 pixels in size, or 2,500 individual pixels.

那么对应于位图的尺寸必须至少有50x 50 个像素，也就是 2,500 个像素。

2.This process is similar to how bitmap graphics are built using the ImageMagick library within PHP.

此过程类似于使用php中的imagemagick库来构建位图。

3.Similarly, soft references are also often used in GUI applications for caching bitmap graphics.

类似地，软引用也经常用于GUI应用程序中，用于缓存位图图形。

4.In the above example, we used a bitmap to display the boot choices.

在上面的示例中，我们使用一个位图来显示引导选项。

5.By default, your example RCP application came with a simple bitmap-based splash screen.

默认情况下，示例RCP应用程序附带了一个基于位图的简单闪屏。

6.Figure 15 shows a graphical representation of a primary bitmap for an example authorization request message.

图15显示了示例授权请求消息的主位图的图形表示。

7.The WebSphere TX parser examines the primary bitmap to determine which fields are present in the message.

WebSphereTX解析器对主位图进行检查，判断消息中出现的字段。

8.First, changes to the original illustration have to be explicitly (and often manually) exported into the bitmap format.

首先，原始绘图必须明确(通常是手工)导出为位图格式。

9.The graphic designer saved the image as a bitmap to preserve its quality.

图形设计师将图像保存为位图以保持其质量。

10.Many digital cameras produce images in bitmap format.

许多数码相机生成的图像为位图格式。

11.To edit the photo, you need to convert the bitmap into a vector image.

要编辑照片，您需要将位图转换为矢量图像。

12.When working with bitmaps, the file size can become quite large.

处理位图时，文件大小可能会变得相当大。

13.The bitmap representation of the image allows for pixel-level editing.

图像的位图表示允许进行像素级编辑。

作文

In the realm of digital graphics, the term bitmap refers to a type of image file format that represents a grid of pixels. Each pixel in a bitmap is assigned a specific color value, which together forms a complete image. The concept of a bitmap is fundamental in computer graphics, as it allows for the representation of images in a way that can be easily manipulated and displayed on screens. Unlike vector graphics, which use mathematical equations to represent shapes, bitmaps are resolution-dependent, meaning that their quality diminishes when scaled up or down. This characteristic makes them suitable for detailed images like photographs but less ideal for images requiring scalability, such as logos or icons. To better understand the significance of bitmaps, consider their application in various fields. In photography, for instance, a digital photo is typically saved as a bitmap file. This means that when you view the image on your computer, you are looking at a collection of tiny dots, each contributing to the overall picture. The more pixels a bitmap contains, the higher the resolution and the clearer the image appears. However, this also results in larger file sizes, which can be a disadvantage when it comes to storage and transmission over the internet.Furthermore, bitmaps are widely used in web design. Designers often utilize bitmap images for backgrounds, buttons, and other graphical elements on websites. Popular formats for bitmaps include JPEG, PNG, and GIF, each with its own strengths and weaknesses. For example, JPEG files are excellent for photographs due to their ability to compress file size while retaining decent quality, whereas PNG files support transparency and are preferred for images with sharp edges and text.In addition to their use in photography and web design, bitmaps play a crucial role in video games and animations. Game developers often use bitmap sprites to create characters and objects within a game. These sprites are essentially bitmaps that are animated by displaying a sequence of images rapidly, giving the illusion of movement. The simplicity and efficiency of bitmaps in this context allow for quick rendering and smooth gameplay.Despite their many advantages, bitmaps do have limitations. One major drawback is their lack of scalability. When a bitmap image is enlarged beyond its original dimensions, it can become pixelated, losing its clarity and detail. This is why designers often prefer vector graphics for illustrations that require resizing. Additionally, bitmaps can consume significant amounts of memory, especially at high resolutions, making them less efficient for certain applications.In conclusion, understanding the concept of a bitmap is essential for anyone involved in digital media. Whether you are a photographer, web designer, or game developer, recognizing the strengths and limitations of bitmaps can help you make informed decisions about the types of images you use in your work. As technology continues to evolve, the role of bitmaps will undoubtedly adapt, but their foundational importance in the world of digital graphics will remain steadfast.

在数字图形的领域中，术语位图指的是一种图像文件格式，它表示一个像素网格。位图中的每个像素都被分配了特定的颜色值，这些颜色值共同形成完整的图像。位图的概念在计算机图形学中是基础的，因为它允许以一种可以轻松操作和显示在屏幕上的方式来表示图像。与使用数学方程表示形状的矢量图形不同，位图是依赖于分辨率的，这意味着当其放大或缩小时，其质量会降低。这一特性使得它们适合用于详细的图像，如照片，但对需要可伸缩性的图像（例如徽标或图标）不太理想。为了更好地理解位图的重要性，考虑它们在各个领域的应用。例如，在摄影中，数字照片通常保存为位图文件。这意味着当你在计算机上查看图像时，你看到的是一系列微小的点，每个点都对整体图像做出贡献。位图包含的像素越多，分辨率越高，图像看起来就越清晰。然而，这也导致文件大小增大，这在存储和互联网传输时可能成为一个缺点。此外，位图在网页设计中被广泛使用。设计师通常利用位图图像作为网站上的背景、按钮和其他图形元素。位图的常见格式包括JPEG、PNG和GIF，每种格式都有其优缺点。例如，JPEG文件因其能够压缩文件大小而保持良好的质量，非常适合用于照片，而PNG文件支持透明度，更适合用于具有锐利边缘和文本的图像。除了在摄影和网页设计中的应用外，位图在视频游戏和动画中也发挥着重要作用。游戏开发者通常使用位图精灵来创建游戏中的角色和对象。这些精灵本质上是位图，通过快速显示一系列图像进行动画处理，从而产生运动的错觉。在这种情况下，位图的简单性和高效性使得快速渲染和流畅的游戏体验成为可能。尽管有许多优点，位图也有局限性。一个主要的缺点是它们缺乏可伸缩性。当位图图像被放大超过其原始尺寸时，可能会变得像素化，失去清晰度和细节。这就是为什么设计师在需要调整大小的插图中往往更喜欢矢量图形。此外，位图在高分辨率下可能消耗大量内存，使其在某些应用中效率较低。总之，理解位图的概念对于任何参与数字媒体的人来说都是必不可少的。无论你是摄影师、网页设计师还是游戏开发者，认识到位图的优缺点可以帮助你在工作中做出明智的决策。随着技术的不断发展，位图的角色无疑会适应，但它们在数字图形世界中的基础性重要性将始终如一。