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Image compression is a type of data compression applied to digital images, to reduce their cost for storage or transmission. Algorithms may take advantage of visual perception and the statistical properties of image data to provide superior results compared with generic data compression methods which are used for other digital data.
Thus, a representation that compresses the storage size of a file from 10 MB to 2 MB yields a space saving of 1 - 2/10 = 0.8, often notated as a percentage, 80%. For signals of indefinite size, such as streaming audio and video, the compression ratio is defined in terms of uncompressed and compressed data rates instead of data sizes:
The BMP file format (Windows bitmap) is a raster-based device-independent file type designed in the early days of computer graphics. It handles graphic files within the Microsoft Windows OS. Typically, BMP files are uncompressed, and therefore large and lossless; their advantage is their simple structure and wide acceptance in Windows programs.
File size is a measure of how much data a computer file contains or how much storage space it is allocated. Typically, file size is expressed in units based on byte . A large value is often expressed with a metric prefix (as in megabyte and gigabyte ) or a binary prefix (as in mebibyte and gibibyte ).
Data in a RAW-file is structured according to the Bayer filter's pattern in cameras that use a single image sensor. Debayering, the process of obtaining bitmap data from a RAW-image is always a lossy operation. [citation needed] In addition, some downsampling is always performed, again reducing image information.
On the "Kardashians" season premiere, Kris Jenner says that Robert Kardashian played tennis with Erik Menendez before his parents' murders.
JPEG compresses images down to much smaller file sizes, and has become the most widely used image file format. [15] The JPEG standard was largely responsible for popularizing digital photography. [16] The first self-contained (portable) digital camera was created in 1975 by Steven Sasson of Eastman Kodak.
Rebel Wilson and Ramona Agruma’s wedding looks didn’t sit in storage for long! On Sunday, Jan. 12, the Pitch Perfect star, 44, and the clothing designer, 40, attended a dinner event on the ...