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coding ratio

См. также в других словарях:

  • Coding gain — In coding theory and related engineering problems, coding gain is the measure in the difference between the signal to noise ratio (SNR) levels between the uncoded system and coded system required to reach the same bit error rate (BER) levels when …   Wikipedia

  • Arithmetic coding — is a method for lossless data compression. Normally, a string of characters such as the words hello there is represented using a fixed number of bits per character, as in the ASCII code. Like Huffman coding, arithmetic coding is a form of… …   Wikipedia

  • Golden ratio base — is a non standard positional numeral system that uses the golden ratio (an irrational number ≈1.61803... symbolized by the Greek letter φ) as its base. It is sometimes referred to as base φ, golden mean base, phi base, or, colloquially, phinary.… …   Wikipedia

  • Golomb coding — is a data compression scheme invented by Solomon W. Golomb in the 1960s. The scheme is based on entropy encoding and is optimal (in the sense of Shannon s source coding theorem) for alphabets following a geometric distribution, making it highly… …   Wikipedia

  • Unary coding — is an entropy encoding that represents a natural number, n , with n − 1 ones followed by a zero. For example 5 is represented as 11110. Some representations use n − 1 zeros followed by a one. The ones and zeros are interchangeable without loss of …   Wikipedia

  • Universal coding — can refer to one of two concepts in data compression: * Universal code (data compression), a fixed prefix code that, for any probability mass function, has a data compression ratio within a constant of the optimal prefix code * Universal source… …   Wikipedia

  • Advanced Audio Coding — Pour les articles homonymes, voir AAC. Advanced Audio Coding Algorithme de compression audio …   Wikipédia en Français

  • Ka/Ks ratio — In genetics, the Ka/Ks ratio (or ω, dN/dS), is the ratio of the rate of non synonymous substitutions (Ka) to the rate of synonymous substitutions (Ks), which can be used as an indicator of selective pressure acting on a protein coding gene.… …   Wikipedia

  • Fibonacci coding — In mathematics, Fibonacci coding is a universal code which encodes positive integers into binary code words. All tokens end with 11 and have no 11 before the end. The formula used to generate Fibonacci codes is: #N = sum {i=0}^k d(i) F(i) #d(i) …   Wikipedia

  • NegaFibonacci coding — Numeral systems by culture Hindu Arabic numerals Western Arabic (Hindu numerals) Eastern Arabic Indian family Tamil Burmese Khmer Lao Mongolian Thai East Asian numerals Chinese Japanese Suzhou Korean Vietnamese …   Wikipedia

  • Scalable Video Coding — Codage vidéo scalable Scalable Video Coding (SVC) est le nom donné à une norme de compression vidéo développée conjointement par UIT T et l ISO. Les deux groupes ont créé le Joint Video Team (JVT) pour développer la norme H.264, ou MPEG 4 AVC… …   Wikipédia en Français

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