Aspect ratio is the ratio of the width of an image to the height of the image. This ratio is expressed as x:y, and differs in case of different images used in photography, television, computer applications and so on. Changing this ratio may distort the images. The resolution of an image is the total number of pixels displayed on your computer or television screen. Generally, the higher the resolution, the higher is the quality of the image.

Comparison chart

Aspect Ratio versus Resolution comparison chart
	Aspect Ratio	Resolution
Definition	Aspect ratio is the ratio of the width of an image to the height of the image (x:y).	The resolution of an image is the total number of pixels displayed on your computer or television screen.
About	Original aspect ratio (OAR) and Modified aspect ratio (MAR) are the dimensions in which the film is originally produced, or altered to fit a particular screen, respectively.	The resolution of digital images can be described as pixel resolution, spatial resolution, spectral resolution, temporal and radiometric resolution.
Commonly used	The common aspect ratios used are 1.33:1, 1.37:1, 1.43:1, 1.50:1, 1.56:1, 1.66:1, 1.75:1, 1.78:1, 1.85:1, 2.00:1, 2.20:1, 2.35:1, 2.39:1, 2.55:1 and other ratios.	The common monitor resolutions are 640×480, 800×600 and 1024×768.

Difference between Vector scan or Random scan and Raster scan display.

S. No.	Vector scan or Random scan display	Raster scan display
1	It can only draw lines and characters	It can draw areas filled with colors.
2	Scanning is done between the end points	Scanning is done one line at a time from top to bottom and left to right.
3	For a complex image a vector scan display may flicker	Even for a complex image a raster scan display does not flicker
4	Scan is not converted to pixels	Scan is converted to pixels.
5	Video Controller is not required.	Video Controller is required.
6	Is costlier	Is cheaper

Computer graphics(CS-604B)

Comparison chart

Difference between Vector scan or Random scan and Raster scan display.

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