Computer graphics(CS-604B)

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
Edit this comparison chartAspect RatioResolution
DefinitionAspect 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.
AboutOriginal 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 usedThe 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 displayRaster scan display
1It can only draw lines and charactersIt can draw areas filled with colors.
2Scanning is done between the end pointsScanning is done one line at a time from top to bottom and left to right.
3For a complex image a vector scan display may flickerEven for a complex image a raster scan display does not flicker
4Scan is not converted to pixelsScan is converted to pixels.
5Video Controller is not required.Video Controller is required.
6Is costlierIs cheaper

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