Pixel and Resolution in Computer Graphics
Each screen point is referred to as Pixel or Pel. A pixel may be defined as the smallest size object or colour spot that can be displayed on a monitor. An image is displayed on the monitor is made up of thousands of these small pixels.
The closely spaced pixels divide the image area into a compact and uniform two-dimensional grid of pixel lines and columns. Each pixel has a particular colour and brightness value. Though the size of a pixel depends mostly on the size of the electron beam within the CRT, they are too fine and close to each other to be perceptible by the human eye.
Resolution in Computer Graphics:
The number of horizontal and vertical pixels on a display screen is called Resolution.
Types of Resolution:
In Computer Graphics, there are two types of resolution exists:
1. Image Resolution
2. Screen Resolution
The Aspect Ratio is the ratio of the number of X pixels to the number of Y pixels. The standard aspect ratio for PCs is 4:3. Some common resolutions, the respective number of pixels and standard aspect ratio are given below:
|Resolution||Number of Pixels||Aspect Ratio|