CA2454626C - Method for reduced bit-depth quantization - Google Patents

Method for reduced bit-depth quantization Download PDF

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Publication number
CA2454626C
CA2454626C CA002454626A CA2454626A CA2454626C CA 2454626 C CA2454626 C CA 2454626C CA 002454626 A CA002454626 A CA 002454626A CA 2454626 A CA2454626 A CA 2454626A CA 2454626 C CA2454626 C CA 2454626C
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Prior art keywords
quantization
transform
matrix
forming
value
Prior art date
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Expired - Lifetime
Application number
CA002454626A
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English (en)
French (fr)
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CA2454626A1 (en
Inventor
Louis Joseph Kerofsky
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Dolby International AB
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Sharp Corp
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27385275&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2454626(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to CA2576161A priority Critical patent/CA2576161C/en
Publication of CA2454626A1 publication Critical patent/CA2454626A1/en
Application granted granted Critical
Publication of CA2454626C publication Critical patent/CA2454626C/en
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    • 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
    • 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
    • H03M7/14—Conversion to or from non-weighted codes
    • H03M7/24—Conversion to or from floating-point codes
    • 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
    • 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
    • H04N19/10—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
    • H04N19/136—Incoming video signal characteristics or properties
    • 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
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • 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
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/18—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a set of transform coefficients
    • 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
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/184—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being bits, e.g. of the compressed video stream
    • 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
    • H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Image Processing (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Television Signal Processing For Recording (AREA)
  • Analogue/Digital Conversion (AREA)
CA002454626A 2001-08-09 2002-08-08 Method for reduced bit-depth quantization Expired - Lifetime CA2454626C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2576161A CA2576161C (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US31143601P 2001-08-09 2001-08-09
US60/311,436 2001-08-09
US31901801P 2001-11-30 2001-11-30
US60/319,018 2001-11-30
US10/139,036 2002-05-02
US10/139,036 US7123655B2 (en) 2001-08-09 2002-05-02 Method for reduced bit-depth quantization
PCT/JP2002/008146 WO2003017497A1 (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2576161A Division CA2576161C (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization

Publications (2)

Publication Number Publication Date
CA2454626A1 CA2454626A1 (en) 2003-02-27
CA2454626C true CA2454626C (en) 2007-10-16

Family

ID=27385275

Family Applications (12)

Application Number Title Priority Date Filing Date
CA002454626A Expired - Lifetime CA2454626C (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization
CA2996825A Expired - Lifetime CA2996825C (en) 2001-08-09 2002-08-08 An image decoding apparatus for obtaining a decoded image by decoding an encoded data
CA2946257A Expired - Lifetime CA2946257C (en) 2001-08-09 2002-08-08 An image decoding apparatus for obtaining a decoded image by decoding an encoded data
CA2776992A Expired - Lifetime CA2776992C (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization
CA2576161A Expired - Lifetime CA2576161C (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization
CA2946246A Expired - Lifetime CA2946246C (en) 2001-08-09 2002-08-08 An image decoding apparatus for obtaining a decoded image by decoding an encoded data
CA2886119A Expired - Lifetime CA2886119C (en) 2001-08-09 2002-08-08 An image decoding apparatus for obtaining a decoded image by decoding an encoded data
CA2737889A Expired - Lifetime CA2737889C (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization
CA2737888A Expired - Lifetime CA2737888C (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization
CA2841701A Expired - Lifetime CA2841701C (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization
CA2801972A Expired - Lifetime CA2801972C (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization
CA2737864A Expired - Lifetime CA2737864C (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization

Family Applications After (11)

Application Number Title Priority Date Filing Date
CA2996825A Expired - Lifetime CA2996825C (en) 2001-08-09 2002-08-08 An image decoding apparatus for obtaining a decoded image by decoding an encoded data
CA2946257A Expired - Lifetime CA2946257C (en) 2001-08-09 2002-08-08 An image decoding apparatus for obtaining a decoded image by decoding an encoded data
CA2776992A Expired - Lifetime CA2776992C (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization
CA2576161A Expired - Lifetime CA2576161C (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization
CA2946246A Expired - Lifetime CA2946246C (en) 2001-08-09 2002-08-08 An image decoding apparatus for obtaining a decoded image by decoding an encoded data
CA2886119A Expired - Lifetime CA2886119C (en) 2001-08-09 2002-08-08 An image decoding apparatus for obtaining a decoded image by decoding an encoded data
CA2737889A Expired - Lifetime CA2737889C (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization
CA2737888A Expired - Lifetime CA2737888C (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization
CA2841701A Expired - Lifetime CA2841701C (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization
CA2801972A Expired - Lifetime CA2801972C (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization
CA2737864A Expired - Lifetime CA2737864C (en) 2001-08-09 2002-08-08 Method for reduced bit-depth quantization

Country Status (13)

Country Link
US (15) US7123655B2 (enExample)
EP (6) EP1753243B1 (enExample)
JP (16) JP3678365B2 (enExample)
KR (3) KR100811986B1 (enExample)
CN (5) CN100442669C (enExample)
AT (2) ATE549861T1 (enExample)
CA (12) CA2454626C (enExample)
CY (2) CY1120069T1 (enExample)
DE (1) DE60232681D1 (enExample)
DK (5) DK1459449T3 (enExample)
ES (6) ES2662250T3 (enExample)
PT (5) PT2262113T (enExample)
WO (1) WO2003017497A1 (enExample)

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