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An image that is 2048 pixels in width and 1536 pixels in height has a total of 2048×1536 = 3,145,728 pixels or 3.1 megapixels. One could refer to it as 2048 by 1536 or a 3.1-megapixel image. The image would be a very low quality image (72ppi) if printed at about 28.5 inches wide, but a very good quality (300ppi) image if printed at about 7 ...
The ratio of the width to the height of an image is known as the aspect ratio, or more precisely the display aspect ratio (DAR) – the aspect ratio of the image as displayed; for TV, DAR was traditionally 4:3 (a.k.a. fullscreen), with 16:9 (a.k.a. widescreen) now the standard for HDTV.
The wide version of SVGA is known as WSVGA (Wide Super VGA or Wide SVGA), [97] featured on Ultra-Mobile PCs, netbooks, and tablet computers. The resolution is either 1024 × 576 (aspect ratio 16:9) [citation needed] or 1024 × 600 (128:75) with screen sizes normally ranging from 7 to 10 inches. It has full XGA width of 1024 pixels.
The aspect ratio of the pixels themselves is known as the pixel aspect ratio ... 1 = 4:3 = 12:9 ... (6 inch wide by 4 inch tall landscape) perfectly matches the 3:2 ...
3.1.1 4:3, 5:4 and 16:10. 3.1 ... is calculated from the numbers of pixels in width and height stated in ... mostly it focuses on pixels (SAR) and not on inches or cm ...
Pixels can be used as a unit of measure such as: 2400 pixels per inch, 640 pixels per line, or spaced 10 pixels apart. Pixel art The measures " dots per inch " (dpi) and " pixels per inch " (ppi) are sometimes used interchangeably, but have distinct meanings, especially for printer devices, where dpi is a measure of the printer's density of dot ...
4:3 (non-square pixels) 1–4 bpp typical, 2 or 3 bpp common. WQVGA: Wide Quarter Video Graphics Array Effectively 1/16 the total resolution (1/4 in each dimension) of "Full HD", but with the height aligned to an 8-pixel "macroblock" boundary. Common in small-screen video applications, including portable DVD players and the Sony PSP. 480×272 ...
Sizes are often expressed as a fraction of an inch, with a one in the numerator, and a decimal number in the denominator. For example, 1/2.5 converts to 2/5 as a simple fraction, or 0.4 as a decimal number. This "inch" system gives a result approximately 1.5 times the length of the diagonal of the sensor.