Vector Scan Display Vs Raster Scan Display

The display must be refreshed at regular intervals minimum of 30 hz fps for flicker free display more difference between vector scan display and raster scan display.

Vector scan display vs raster scan display. In random scan display an electron beam is deflected from endpoint to end point. The main difference between vector and raster graphics is that raster graphics are composed of pixels while vector graphics are composed of paths. 60 times per second no matter how complex the scene. Crt based raster displays redraw the image or refresh the screen at a fixed rate eg.

Random scan images are stored as vectors. Raster scans have a constant refresh rate while random scans do not. Random scan monitors cannot display realistic shades scenes. Televisions in our house are based on raster scan method.

Information of on and off pixels is stored in refresh buffer or frame buffer. A raster scan display is based on intensity control of pixels in the form of a rectangular box called raster on the screen. The order of deflection is dictated by the arbitrary order of the display commands. A raster graphic such as a gif or jpeg is an array of pixels of various colors which together form an image.

Vector scan or random scan display in this technique the electron beam is directed only to the part of the screen where the picture is to be drawn rather than scanning from left to right and top to bottom as in raster scan. Vector displays redraw as quickly as possible given the number of objects on the screen.