simple truncation
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Block Truncation Coding — Block Truncation Coding, or BTC, is a type of lossy image compression technique for greyscale images. It divides the original images into blocks and then uses a quantiser to reduce the number of grey levels in each block whilst maintaining the… … Wikipedia
Rounding — This article is about numerical rounding. For lip rounding in phonetics, see Labialisation. For other uses, see Rounding (disambiguation). Rounding a numerical value means replacing it by another value that is approximately equal but has a… … Wikipedia
Scale space implementation — Scale space Scale space axioms Scale space implementation Feature detection Edge detection Blob detection Corner detection … Wikipedia
Nosferatu (word) — The name Nosferatu has been presented as a Romanian word, synonymous with vampire . However, it seems to be largely a literary creation and its basis in Romanian folklore is uncertain. Contents 1 Origins of the name 2 Notes 3 References … Wikipedia
List of numerical analysis topics — This is a list of numerical analysis topics, by Wikipedia page. Contents 1 General 2 Error 3 Elementary and special functions 4 Numerical linear algebra … Wikipedia
Numerically controlled oscillator — A numerically controlled oscillator (NCO) is a digital signal generator which creates a synchronous (i.e. clocked), discrete time, discrete valued representation of a waveform, usually sinusoidal.[1] NCOs are often used in conjunction with a… … Wikipedia
Screw thread — Internal and external threads illustrated using a common nut and bolt. The screw and nut pair can be used to convert torque into linear force. As the screw (or bolt) is rotated, the screw moves along its axis through the fixed nut, or the non… … Wikipedia
Alvis–Curtis duality — In mathematics, Alvis–Curtis duality is a duality operation on the characters of a reductive group over a finite field, introduced by Charles W. Curtis (1980) and studied by his student Dean Alvis (1979). Kawanaka (1981, 1982)… … Wikipedia
Numeric precision in Microsoft Excel — As with other spreadsheets, Microsoft Excel works only to limited accuracy because it retains only a certain number of figures to describe numbers (it has limited precision). Excel nominally works with 8 byte numbers by default, a modified 1985… … Wikipedia
Cheque — A Canadian cheque … Wikipedia
Scribal abbreviation — Sigla redirects here. For the village in Poland, see Sigła. Text sample from an early 15th century Bible manuscript. Scribal abbreviations (sigla [plural], siglum and sigil [singular]) are the abbreviations used by ancient and mediæval scribes… … Wikipedia
