There are two types of computer graphics based on the formation or quality of image and one the basis of user interaction. On the basis of quality of image there are two types of computer graphics raster graphics and vector graphics while on the basis of user interaction there are also two types of computer graphics i.e. interactive and non-interactive computer graphics.
Vector and Rester Graphics
Bitmap images have pixels that are organized in a grid. Each pixel, or “bit,” of the image contains information about the color that will be displayed. Because bitmap images have a fixed resolution, they cannot be resized without sacrificing image quality. A vector image, which uses embedded instructions to draw lines on paths instead of dots, is an alternative to a bitmap. A vector image can be resized indefinitely without losing image quality.
If raster graphics frequently employ mathematical formulas to create visuals, vector graphics are used instead. This equation, often known as a vector, specifies the path’s geometry, color, and, if present, border.
On the plus side, vectors may be stretched indefinitely without losing quality because they are mathematical in nature. This is so that the image remains a clear, sharp photo while being enlarged because as a vector image is scaled up, the mathematical equation must be recalculated. Therefore, vector pictures perform well for things like logos, straightforward product artwork, and illustrations but not for things like fine-tuned painting or photo retouching.
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The individual-colored pixels that make up raster graphics, sometimes referred to as bitmaps, each contribute to the final image. A raster image is one that you are viewing if you have ever viewed an image and zoomed in till it is nothing but a tangle of blurry squares.
Raster images may create intricate visuals with a variety of hues and gradients. This gives the user the ability to create a detailed image, perhaps even giving it a lifelike appearance. The number of pixels per inch determines the image’s quality (ppi). With more pixels per inch, it is possible to fit more colors into an image, resulting in a gradient that looks smoother overall.
Short difference between vector and raster graphics
When compared to raster drawings, the lack of detail in vector graphics is the most obvious distinction. Vectors cannot operate with gradients, shadows, or any other intricate detail since they are made up of forms, each of which has its own color. Because of this, vector pictures work best for straightforward designs with solid color schemes.
Interactive and Non-Interactive Computer Graphics
There are two types of Computer Graphics based on the working process, user control and devices used. Interactive Computer Graphics and Non-Interactive Computer Graphics are two types of computer graphics. There are other categories of computer graphics in another context like 2D Graphics and 3D Graphics, Raster Graphics and Vector Graphics, etc. Here we will dive deep into Interactive and Non-Interactive Computer Graphics.
Interactive Computer graphics (ICG)
It is the type of Computer Graphics that have dual communication between computer and user. Dual communication means the user can also control the graphics or image by providing a request with an input device. For example, Video game controllers of FIFA games, Simulators, Smart Video Players, Graphics Applications, etc. The input device, the game controller helps to signal user requests to the computer and the computer then transfers process requests to the running application or games. Get requests from users it modifies obtained the picture as per the will of the user and stored program of the application. It seems to the usual like a picture is changing instantaneously in response to users’ commands.
Users can give multiple commands; every time user gets a graphical response from the computer. It makes the user motivated to work continuously with graphics. In this way, a user controls the computer graphics according to his needs or will. Interactive computer graphics are more important because they give control to the user.
Interactive Computer Graphics is making our life very easy to communicate with computers. Interactive Computer Graphics gives the user control of graphics. It affects human life indirectly in a number of ways. It helps to train a pilot by simulating airplanes. Flight simulators help Pilots to get trained well without sitting on airplanes without any risk. The flight simulator is a cup of aircraft deck, containing all the systems of the plane and surrounded by screens on which computer-generated views of terrain visible and takeoff and landing are projected.
In this way, interactive Computer Graphics makes the flight simulators more advantageous over real crafts for training purposes such as fuel-saving safety and the ability to familiarize the trainee with a large number of the world’s airports.
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Non-interactive Computer Graphics (NICG)
Non-interactive Computer Graphics is also popularly known as the passive form of Computer Graphics. In this type of Computer Graphics, the user does not have any control over the picture or scene because it is designed statically. Non-interactive Computer Graphics just store images in computer memory and the user can only see it as it is designed or programmed. It is designed to give information to the user but not take any request from the user. It works linearly according to stored instructions. This image is totally under the control of the program saved but not the users. For example, Screensavers, Titles are shown in TV Programs, etc.
These are the two types of Computer Graphics on the basis of user interactions and controls. Both interactive and non-interactive computer graphics are developing rapidly in different applications. I hope you are now confident about the kind of computer graphics on the basis of user interaction.
What are the types of Computer Graphics?
Types of Computer Graphics are
1. Vector Graphics
2. Raster Graphics
3. Interactive Computer Graphics
4. Non-Interactive Computer Graphics
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