Aspect Ratio

• Aspect ratio is the ratio between width of an image and the height of an image.
• It is commonly explained as two numbers separated by a colon (18:9).
• This ratio differs in different images and in different screens.
• Aspect ratio maintains a balance between the appearance of an image on the screen.
• It does not let the image to get distorted when aspect ratio is increased.

Types of aspect ratio

Pixel aspect ratio

• Pixel aspect ratio(PAR) is a mathematical ratio that describes how the width of a pixel in a digital image compares to the height of that pixel.

Display aspect ratio(DAR)

• The aspect ratio for the display.
• Display aspect ratio= SAR*PAR

Storage aspect ratio(SAR)

• The ratio of Width and height of a digital file is called storage aspect ratio.

My notes