What is a vector image?

What does vector graphics mean?

A vector image is an image described using geometric figures. It is represented by a mathematical formula rather than a collection of pixels. In computer graphics, vector graphics are widely used in graphic design, CAD, map production, chart drawing and other fields. In contrast, bitmap images are composed of pixels, and the number of pixels determines the resolution of the image.

Different from bitmap images, vector images use geometric figures such as line segments, curves, points, etc. to describe images. Due to the use of mathematical formulas, vector images can be enlarged infinitely without distortion; while bitmap images will appear jagged and blurred when enlarged. This makes vector graphics the first choice for prints, logos, icons, and any situation where high resolution is required.

One of the features of vector graphics is their editability. Because vector images are composed of objects based on mathematical formulas, the shape, size, color, etc. of the image can be changed by modifying the parameters in the formula. This allows designers to easily make modifications and adjustments to the image without having to redraw the entire image. In contrast, bitmap images are much more cumbersome to edit, requiring modifications for each pixel.

Another advantage of vector graphics is their file size. Because vector images only store drawing formulas rather than pixel information, their file sizes tend to be much smaller than bitmap images. This means that vector images require less space and time to store and transfer than bitmap images.

However, vector graphics also have some limitations and disadvantages. First, complex vector graphics can require significant computing resources to render and render. Additionally, vector images may not be as accurate as bitmap images at conveying certain effects, such as photorealistic light and shadow. So in some specific application scenarios, bitmap images are still a better choice.

In short, vector graphics are a graphical representation method that uses mathematical formulas to describe images. It has the advantages of being able to enlarge without distortion, strong editability and file size. At the same time, it also has limitations and applicable scenarios. With the development of computer technology, vector graphics play an important role in graphic design and production, and bring many conveniences and creative possibilities.

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