WO1999034604A3 - Method for reducing the storage and number of computations required for inverse quantization and inverse scan in mpeg video decoding - Google Patents

Method for reducing the storage and number of computations required for inverse quantization and inverse scan in mpeg video decoding Download PDF

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Publication number
WO1999034604A3
WO1999034604A3 PCT/IB1998/002089 IB9802089W WO9934604A3 WO 1999034604 A3 WO1999034604 A3 WO 1999034604A3 IB 9802089 W IB9802089 W IB 9802089W WO 9934604 A3 WO9934604 A3 WO 9934604A3
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WO
WIPO (PCT)
Prior art keywords
inverse
inverse quantization
reducing
storage
video decoding
Prior art date
Application number
PCT/IB1998/002089
Other languages
French (fr)
Other versions
WO1999034604A2 (en
Inventor
Kenneth S Singh
Original Assignee
Koninkl Philips Electronics Nv
Philips Svenska Ab
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 Koninkl Philips Electronics Nv, Philips Svenska Ab filed Critical Koninkl Philips Electronics Nv
Priority to JP53470399A priority Critical patent/JP2001513311A/en
Priority to EP98959091A priority patent/EP0962100A2/en
Publication of WO1999034604A2 publication Critical patent/WO1999034604A2/en
Publication of WO1999034604A3 publication Critical patent/WO1999034604A3/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
    • H04N19/10—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
    • H04N19/124—Quantisation
    • H04N19/126—Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
    • 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
    • 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
    • H04N19/124—Quantisation
    • 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
    • H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
    • 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
    • H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding

Abstract

A method and device for performing inverse quantization and inverse scan on run/level code without expanding the run/level code into a matrix. The run is converted into a coordinate in the matrix. This coordinate can be used to find the inverse quantization value in the inverse quantization matrix. The inverse quantization value is multiplied by the level to produce a dequantized level. The run is replaced by the coordinate and the level is replaced by the dequantized level.
PCT/IB1998/002089 1997-12-23 1998-12-21 Method for reducing the storage and number of computations required for inverse quantization and inverse scan in mpeg video decoding WO1999034604A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP53470399A JP2001513311A (en) 1997-12-23 1998-12-21 Method for reducing the number of storage devices and computations required for inverse quantization and inverse scanning in MPEG video decoding
EP98959091A EP0962100A2 (en) 1997-12-23 1998-12-21 Method for reducing the storage and number of computations required for inverse quantization and inverse scan in mpeg video decoding

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US99667097A 1997-12-23 1997-12-23
US08/996,670 1997-12-23

Publications (2)

Publication Number Publication Date
WO1999034604A2 WO1999034604A2 (en) 1999-07-08
WO1999034604A3 true WO1999034604A3 (en) 1999-08-19

Family

ID=25543173

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1998/002089 WO1999034604A2 (en) 1997-12-23 1998-12-21 Method for reducing the storage and number of computations required for inverse quantization and inverse scan in mpeg video decoding

Country Status (4)

Country Link
EP (1) EP0962100A2 (en)
JP (1) JP2001513311A (en)
KR (1) KR20000075527A (en)
WO (1) WO1999034604A2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5604540A (en) * 1995-02-16 1997-02-18 C-Cube Microsystems, Inc. Structure and method for a multistandard video encoder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5604540A (en) * 1995-02-16 1997-02-18 C-Cube Microsystems, Inc. Structure and method for a multistandard video encoder

Also Published As

Publication number Publication date
EP0962100A2 (en) 1999-12-08
KR20000075527A (en) 2000-12-15
WO1999034604A2 (en) 1999-07-08
JP2001513311A (en) 2001-08-28

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