CA2123090A1 - Data compression system - Google Patents

Data compression system

Info

Publication number
CA2123090A1
CA2123090A1 CA002123090A CA2123090A CA2123090A1 CA 2123090 A1 CA2123090 A1 CA 2123090A1 CA 002123090 A CA002123090 A CA 002123090A CA 2123090 A CA2123090 A CA 2123090A CA 2123090 A1 CA2123090 A1 CA 2123090A1
Authority
CA
Canada
Prior art keywords
coefficients
zerotree
coding
symbol represents
tree
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002123090A
Other languages
French (fr)
Other versions
CA2123090C (en
Inventor
Jerome Mark Shapiro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
Jerome Mark Shapiro
General Electric Company
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 Jerome Mark Shapiro, General Electric Company filed Critical Jerome Mark Shapiro
Publication of CA2123090A1 publication Critical patent/CA2123090A1/en
Application granted granted Critical
Publication of CA2123090C publication Critical patent/CA2123090C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/40—Tree coding, e.g. quadtree, octree
    • 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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/63—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
    • 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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/63—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
    • H04N19/64—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets characterised by ordering of coefficients or of bits for transmission
    • H04N19/647—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets characterised by ordering of coefficients or of bits for transmission using significance based coding, e.g. Embedded Zerotrees of Wavelets [EZW] or Set Partitioning in Hierarchical Trees [SPIHT]
    • 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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/115—Selection of the code volume for a coding unit prior to 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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/146—Data rate or code amount at the encoder output

Abstract

A data processing system augments compression of non-zero values of significant coefficients by coding (1410, 1412) en-tries of a significance map independently of coding the values of significant non-zero coefficients. A dedicated symbol represents a zerotret structure encompassing a related association of insignificant coefficients within the tree structure, thereby compactly representing each tree of insignificant coefficients. The zerotree symbol represents that neither a root coefficient of the zerotree structure nor any descendant of the root coefficient has a magnitude greater than a given reference level. The zerotree structure is disclosed in the content of a pyramid-type image subband processor (1408) together with successive refinement quantization and entropy coding (1418) to facilitate data compression.
CA002123090A 1991-11-12 1992-10-01 Data compression system Expired - Fee Related CA2123090C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US790,860 1991-11-12
US07/790,860 US5315670A (en) 1991-11-12 1991-11-12 Digital data compression system including zerotree coefficient coding
PCT/US1992/008184 WO1993010634A1 (en) 1991-11-12 1992-10-01 Data compression system

Publications (2)

Publication Number Publication Date
CA2123090A1 true CA2123090A1 (en) 1993-05-27
CA2123090C CA2123090C (en) 2002-08-13

Family

ID=25151951

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002123090A Expired - Fee Related CA2123090C (en) 1991-11-12 1992-10-01 Data compression system

Country Status (5)

Country Link
US (1) US5315670A (en)
JP (1) JP3108808B2 (en)
KR (1) KR100274528B1 (en)
CA (1) CA2123090C (en)
WO (1) WO1993010634A1 (en)

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Also Published As

Publication number Publication date
KR100274528B1 (en) 2000-12-15
CA2123090C (en) 2002-08-13
US5315670A (en) 1994-05-24
JPH07501664A (en) 1995-02-16
JP3108808B2 (en) 2000-11-13
WO1993010634A1 (en) 1993-05-27

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