The vector images are defined mathematically, based mostly on their geometric characteristics. To be precise, a vector image is described by a set of geometric primitives that describe points, lines, curves, and polygons to which we will attribute colours and shades. They are radically totally different from raster images, which are described as a grid of properly colored pixels.
Advantages
1. In most cases, vector images would require lesser disk area than a bitmap. They’re mostly fashioned by flat colors or simple gradients because of which they do not require numerous disk space. Lesser the knowledge to create the image, smaller is the file size. Thus, they are given more choice in comparison to other images.
2. Vector images do not lose quality when they’re scaled. In principle, a vector image might be scaled indefinitely. In the case of matrix images, some extent is reached the place it is obvious that the image consists of pixels. Thus, the quality of vector images is superior to other forms of images.
3. They are often simply saved and modified in the future. The most effective part is that, the process of modification is quite easy as well. All kinds of adjustments could be simply managed without any difficulty. Even if a file is modified, the resultant file doesn’t occupy plenty of space. This is one other reason why they are used throughout industries.
4. The process of making them is quite easy as well. In reality, utilizing easy drawings we will get advanced vector images without quite a lot of difficulty. Simple and user-pleasant programs comparable to Macromedia Freehand, Corel Draw and Adobe Illustrator can be used for creating simple drawings, which can be converted to vector images.
Disadvantages
1. They are generally not suitable for encoding pictures or videos taken within the «real world» (for example — images of nature), though some codecs support a blended composition. Virtually all digital cameras store images in bitmap.
2. The data used to describe them have to be processed by a powerful machine, i.e. the computer should be powerful enough to carry out the necessary calculations for forming the final image. If the data volume is high it may sluggish down the rendering of the image on screen, even when working with small files.
3. Another disadvantage is that, even small drawing errors are often visible, when the images are enlarged to sure extent. Such an incident can have an effect on the quality of the images, especially when they are used in the subject of animation.
Despite the fact that vector images have a few disadvantages, they’ve a wide range of applications and are carried out within the fields of computer graphics, architecture and engineering etc.
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