Differentiate between Raster Scan and Random Scan | Raster vs Random Scan | Computer graphics.

Some of the points that make difference between raster and random are as follow:-

Sr No.	Raster Scan System	Random Scan System
1	The electron beam is swept across the screen, one row at a time, from top to bottom.	The electron beam is directed only to the parts of screen where a picture is to be drawn.
2	Its resolution is poor	Its resolution is good
3	It is not Expensive than Random	It is Quite Expensive than Raster
4	Any Alteration is not Easy.	Any Alteration is Easy.
5	Picture definition is stored as a set of intensity values for all screen points, called pixels in a refresh buffer area.	Picture definition is stored as a set of line drawing instructions in a display file.
6	Screen points/pixels are used to draw an image.	Mathematical functions are used to draw an image.
7	In Raster Scan, interweaving is used.	While in Random Scan, interweaving is not used.
8	Picture Rendering is used using pixels.	Picture Rendering is used with the help of mathematical functions.