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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.
Continuously varied JPEG compression (between Q=100 and Q=1) for an abdominal CT scan. JPEG (/ ˈ dʒ eɪ p ɛ ɡ / JAY-peg, short for Joint Photographic Experts Group and sometimes retroactively referred to as JPEG 1) [2] [3] is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography.
Composite image showing JPG and PNG image compression. Left side of the image is from a JPEG image, showing lossy artefacts; the right side is from a PNG image. In the late 1980s, digital images became more common, and standards for lossless image compression emerged. In the early 1990s, lossy compression methods began to be widely used. [14]
Lossless compression of digitized data such as video, digitized film, and audio preserves all the information, but it does not generally achieve compression ratio much better than 2:1 because of the intrinsic entropy of the data. Compression algorithms which provide higher ratios either incur very large overheads or work only for specific data ...
Quantization, involved in image processing, is a lossy compression technique achieved by compressing a range of values to a single quantum (discrete) value. When the number of discrete symbols in a given stream is reduced, the stream becomes more compressible.
The Karnataka Public Service Commission is a government body in the state of Karnataka, India, responsible for recruiting candidates for various state government jobs through competitive examinations.
Karnataka Administrative Service (KAS) is the civil service of Karnataka state in India. [1] The Public Service Commission conducts exams to recruit candidates for the service. These young officers recruited by KPSC take up various administrative posts at the district and state level.
The Karnataka State Rural Development and Panchayat Raj University Bill, 2016 was passed in the Karnataka Legislative Assembly in March 2016, [5] and in the Karnataka Legislative Council in July 2016. [6] The university was inaugurated in March 2018 by chief minister Siddaramaiah, and started operating from the district administration building.