What is Resolution?

What is Resolution?

It is the number of pixels contained on each scanned lines. The sharpness and clarity of the image is determined by resolution more the number of pixel sharper is the image. Most monitors display 1024 by 768 pixels.

In images it is calculated by dpi(dots per inch) or ppi(Pixels per inch).

72 dpi is used for Screen elements, web elements, mobile content, and video contents.

300 dpi is used for printing.

What is a Pixel?

When any computer-generated image is magnified to large extent it shows small colored squares. Which are called as pixel? Pixel is the smallest picture element of the image that is viewed on computer.

An image composed of pixels is called bitmapped image or raster image. Higher the number of pixels higher will be the resolution and better picture quality. Pixels do not have height or width because it is just a piece of information.

A digital color image pixel has three numerical RGB values (red, green, blue) to represent the color. In a pixel, each RGB component is represented by 8 bit. Three 8 bit (one byte for each of RGB) are called 24 bit color. Each 8 bit RGB component can have 256 possible values, ranging from 0 to 255. For example: three values like (250, 165, 0) meaning (red =250, green= 165, blue=0) to indicate one orange pixel.