Difference Between Raster Scanning and Vector Scanning

Characteristics	Raster Scan	Vector Scan
Working	In raster scanning, the beam sweeps horizontally left-to-right at a steady rate, then blanks and rapidly moves back to the left, where it turns back on and sweeps out the next line. During this time, the vertical position is also steadily increasing (downward), but much more slowly – there is one vertical sweep per image frame, but one horizontal sweep per line of resolution.	In Vector scan The electron beam follows an arbitrary path tracing the connected sloped lines. The beam skips over dark areas of the image without visiting their points.
Refresh rate	60 to 80 frames per second.	Depends upon image to be drawn.
Stores Picture Definition in	Refresh buffer or Frame buffer	Refresh Display file or Display Program
Image Drawing	Image is composed of glowing pixels.	Image is composed of drawn lines.
	Can be used to draw complex drawings.	They can display only a shape’s outline.
Electron Beam	Electronic Beam is  directed to whole screen for drawing an image or object.	Electronic beam is directed to only part where image is to be drawn.
Price	Less Expensive	More Expensive
Image Quality	Good	Best