WO2008087466A1 - Codage par longueur de plage de sequences binaires suivi de deux compressions independantes - Google Patents

Codage par longueur de plage de sequences binaires suivi de deux compressions independantes Download PDF

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Publication number
WO2008087466A1
WO2008087466A1 PCT/IB2007/000173 IB2007000173W WO2008087466A1 WO 2008087466 A1 WO2008087466 A1 WO 2008087466A1 IB 2007000173 W IB2007000173 W IB 2007000173W WO 2008087466 A1 WO2008087466 A1 WO 2008087466A1
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WO
WIPO (PCT)
Prior art keywords
run
sequence
rls
binary
length
Prior art date
Application number
PCT/IB2007/000173
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English (en)
Inventor
Rosen Stefanov
Original Assignee
Rosen Stefanov
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rosen Stefanov filed Critical Rosen Stefanov
Priority to PCT/IB2007/000173 priority Critical patent/WO2008087466A1/fr
Publication of WO2008087466A1 publication Critical patent/WO2008087466A1/fr
Priority to GB0909518A priority patent/GB2456728A/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/93—Run-length coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/005—Statistical coding, e.g. Huffman, run length coding
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/46—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind

Definitions

  • the present invention relates to compression of sequences of symbols - encoding /decoding method.
  • codec/coder method of encoding/decoding information aiming at shortening
  • entropy codec/entropy coder is a method and/or means to encode a symbol a using only FS(S) from the sequence S with an average size close to — Iog 2 (p(a)) ,
  • p(a) is probability of occurrence of a in ⁇ .(for example Huffrnan coding [4, ⁇ 2.1], arithmetic coding [4, ⁇ 4]- US patent 4,122,440)
  • the enclosed method uses RLE to construct better entropy compression system, as compared to existing entropy coders. This means, that if S is a sequence of symbols from an alphabet A (A and S are fixing the statistical structure, i.e. finite scheme), then the length of encoded S with the enclosed method is less or equal to Is(H(S) (the best possible achievement of a pure entropy coder).
  • . c k + d k is the number of runs with size k
  • the size in bits of JKS is 21(without the skipped last 0).
  • the overall size of encoded BS with an entropy coder is 11 d RLS 0 and
  • Example 1 is a regular case and is the object of the invention, as indicate in claim 1 to compress binary sequences better than the other entropy coders do.
  • BS22RLS and RLS22RLS 115 Inequalities explain the reasons, which will be proven below.
  • RLS 0 RLS 1 just one (RLS).
  • Fig.l shows a simplified hardware implementation of an encoder according to claim 1. It consist of:
  • 175 encoded binary sequence can be used to activate an output.
  • the first bit is needed for initialization of the decoder as well.
  • Entropy coder e.g. Huffinan[4, ⁇ 2.1] or Arithmetic [4, ⁇ 4]
  • FSO two finite schemes
  • FSl finite schemes
  • FSO can be activated by activating "Select FSO”.
  • FSl can be activated by activating "Select FSl”. Activation of an finite scheme must be done before receiving a symbol. "FSO” and/or "FSl” are found earlier or are updated after every symbol (adaptive compression ⁇ , ⁇ 5]).
  • the line is responsible to activate the "Select FSO" and "Select run 1 " before sending the run to the "Entropy coder”.
  • Fig.2 shows a simplified hardware implementation of a decoder according to claim 1. It consist of:
  • Entropy coder for example Huffman[4, ⁇ 2.1] or Arithmetic [4, ⁇ 4]
  • FSO finite schemes
  • FSl finite schemes
  • Line “RunO” is used to move runs with zeros from “Switch” to the "Run".
  • the line is 215 responsible to activate the "Select FSO” and "Select run 1 " before sending the run to the "Run”.
  • S 1 is the sequence of all elements from S starting with 1
  • S 0 is the sequence of all elements from S starting with 0, then next equality is true.
  • S 1 ⁇ l,O,O,l, ⁇ - second bits from the binary representation of elements of S, but only if the first bit is 1.
  • the invention can be used in: digital communication, digital television, digital photography, computers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Error Detection And Correction (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

L'invention concerne un procédé permettant de comprimer une séquence binaire BS ={b1, b2, b3,..., bN} par la mise en œuvre d'un codeur par longueur de plage (RLE) et de deux compressions indépendantes. La séquence de sortie de RLE est ensuite dénotée avec RLS. Si b1=0, alors RLS représente 0, x0, y0, x1,.... Si b1= 1, alors RLS représente 1, y0, x0, y1, …. xi représente la longueur de la ième plage avec des zéros et yj représente la longueur de jièmeplage avec des uns dans BS. RLS sans b1 peut être divisé en deux séquences RLS0 et RLS1, pour lesquelles : • RLS0={ x0, x1, …}. • RLS1={y0, y1,…}. Puis, le nombre de symboles dans la séquence X est dénoté avec |X| et l'entropie de X avec H(X). Alors, |X|H(X) représente la taille de la séquence X codée. Les inégalités : • |RLS0|H(RLS0)+ |RLS1|H (RLS1)≤|BS|H(BS) • |RLS0|H(RLS0)+|RLS1|H(RLS1)≤|RLS|H(RLS) sont prouvées.
PCT/IB2007/000173 2007-01-17 2007-01-17 Codage par longueur de plage de sequences binaires suivi de deux compressions independantes WO2008087466A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/IB2007/000173 WO2008087466A1 (fr) 2007-01-17 2007-01-17 Codage par longueur de plage de sequences binaires suivi de deux compressions independantes
GB0909518A GB2456728A (en) 2007-01-17 2009-06-02 Run-length encoding of binary sequences followed by two independent compressions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2007/000173 WO2008087466A1 (fr) 2007-01-17 2007-01-17 Codage par longueur de plage de sequences binaires suivi de deux compressions independantes

Publications (1)

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WO2008087466A1 true WO2008087466A1 (fr) 2008-07-24

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GB (1) GB2456728A (fr)
WO (1) WO2008087466A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010141926A1 (fr) * 2009-06-05 2010-12-09 Qualcomm Incorporated Codage incrémental efficace de distributions de probabilité pour descripteurs de caractéristiques d'images
WO2011128268A1 (fr) * 2010-04-13 2011-10-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Codeur et décodeur de partitionnement d'intervalles de probabilité
US8625902B2 (en) 2010-07-30 2014-01-07 Qualcomm Incorporated Object recognition using incremental feature extraction
US9667751B2 (en) 2000-10-03 2017-05-30 Realtime Data, Llc Data feed acceleration
US9762907B2 (en) 2001-02-13 2017-09-12 Realtime Adaptive Streaming, LLC System and methods for video and audio data distribution
US9792128B2 (en) 2000-02-03 2017-10-17 Realtime Data, Llc System and method for electrical boot-device-reset signals
US9967368B2 (en) 2000-10-03 2018-05-08 Realtime Data Llc Systems and methods for data block decompression
US10019458B2 (en) 1999-03-11 2018-07-10 Realtime Data Llc System and methods for accelerated data storage and retrieval
US10033405B2 (en) 1998-12-11 2018-07-24 Realtime Data Llc Data compression systems and method
CN110717151A (zh) * 2019-09-04 2020-01-21 湖南遥昇通信技术有限公司 一种数字指纹处理及签名处理方法

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US20060039615A1 (en) * 2004-08-18 2006-02-23 Wen-Hsiung Chen Joint amplitude and position coding for photographic image and video coding

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US20060039615A1 (en) * 2004-08-18 2006-02-23 Wen-Hsiung Chen Joint amplitude and position coding for photographic image and video coding

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10033405B2 (en) 1998-12-11 2018-07-24 Realtime Data Llc Data compression systems and method
US10019458B2 (en) 1999-03-11 2018-07-10 Realtime Data Llc System and methods for accelerated data storage and retrieval
US9792128B2 (en) 2000-02-03 2017-10-17 Realtime Data, Llc System and method for electrical boot-device-reset signals
US10419021B2 (en) 2000-10-03 2019-09-17 Realtime Data, Llc Systems and methods of data compression
US10284225B2 (en) 2000-10-03 2019-05-07 Realtime Data, Llc Systems and methods for data compression
US9667751B2 (en) 2000-10-03 2017-05-30 Realtime Data, Llc Data feed acceleration
US9967368B2 (en) 2000-10-03 2018-05-08 Realtime Data Llc Systems and methods for data block decompression
US9859919B2 (en) 2000-10-03 2018-01-02 Realtime Data Llc System and method for data compression
US9769477B2 (en) 2001-02-13 2017-09-19 Realtime Adaptive Streaming, LLC Video data compression systems
US9762907B2 (en) 2001-02-13 2017-09-12 Realtime Adaptive Streaming, LLC System and methods for video and audio data distribution
US10212417B2 (en) 2001-02-13 2019-02-19 Realtime Adaptive Streaming Llc Asymmetric data decompression systems
WO2010141926A1 (fr) * 2009-06-05 2010-12-09 Qualcomm Incorporated Codage incrémental efficace de distributions de probabilité pour descripteurs de caractéristiques d'images
CN103119849B (zh) * 2010-04-13 2017-06-16 弗劳恩霍夫应用研究促进协会 概率区间分割编码器和译码器
US8907823B2 (en) 2010-04-13 2014-12-09 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Entropy coding
CN103119849A (zh) * 2010-04-13 2013-05-22 弗兰霍菲尔运输应用研究公司 概率区间分割编码器和译码器
WO2011128268A1 (fr) * 2010-04-13 2011-10-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Codeur et décodeur de partitionnement d'intervalles de probabilité
US8625902B2 (en) 2010-07-30 2014-01-07 Qualcomm Incorporated Object recognition using incremental feature extraction
CN110717151A (zh) * 2019-09-04 2020-01-21 湖南遥昇通信技术有限公司 一种数字指纹处理及签名处理方法
CN110717151B (zh) * 2019-09-04 2021-05-04 湖南遥昇通信技术有限公司 一种数字指纹处理及签名处理方法

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GB0909518D0 (en) 2009-07-15
GB2456728A (en) 2009-07-29

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