CL2021003004A1 - Señalización de transformada no separable de baja frecuencia basada en patrones de puesta a cero para codificación de video - Google Patents

Señalización de transformada no separable de baja frecuencia basada en patrones de puesta a cero para codificación de video

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Publication number
CL2021003004A1
CL2021003004A1 CL2021003004A CL2021003004A CL2021003004A1 CL 2021003004 A1 CL2021003004 A1 CL 2021003004A1 CL 2021003004 A CL2021003004 A CL 2021003004A CL 2021003004 A CL2021003004 A CL 2021003004A CL 2021003004 A1 CL2021003004 A1 CL 2021003004A1
Authority
CL
Chile
Prior art keywords
zeroing
transform block
region
low frequency
patterns
Prior art date
Application number
CL2021003004A
Other languages
English (en)
Inventor
Marta Karczewicz
Vadim Seregin
Hilmi Enes Egilmez
Muhammed Zeyd Coban
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of CL2021003004A1 publication Critical patent/CL2021003004A1/es

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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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive 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
    • H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
    • 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
    • H04N19/14—Coding unit complexity, e.g. amount of activity or edge presence estimation
    • 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
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
    • 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
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
    • H04N19/45—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder performing compensation of the inverse transform mismatch, e.g. Inverse Discrete Cosine Transform [IDCT] mismatch
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive 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
    • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)

Abstract

El decodificador de video está configurado para determinar una posición de un último coeficiente significativo en un bloque de transformada de datos de video. El decodificador de video puede entonces determinar un valor de un índice de transformada noseparable de baja frecuencia (LFNST) para el bloque de transformada con base en la posición del último coeficiente significativo con relación a una región de puesta a cero del bloque de transformada, en donde la región de puesta a cero del bloque de transformada incluye una primera región dentro de una región LFNST del bloque de transformada y una segunda región del bloque de transformada fuera de la región LFNST. El decodificador de video entonces puede transformar a la inversa el bloque de transformada de acuerdo con el valor del índice LFNST.
CL2021003004A 2019-05-17 2021-11-15 Señalización de transformada no separable de baja frecuencia basada en patrones de puesta a cero para codificación de video CL2021003004A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962849689P 2019-05-17 2019-05-17
US15/931,271 US11032572B2 (en) 2019-05-17 2020-05-13 Low-frequency non-separable transform signaling based on zero-out patterns for video coding

Publications (1)

Publication Number Publication Date
CL2021003004A1 true CL2021003004A1 (es) 2022-08-19

Family

ID=73230877

Family Applications (1)

Application Number Title Priority Date Filing Date
CL2021003004A CL2021003004A1 (es) 2019-05-17 2021-11-15 Señalización de transformada no separable de baja frecuencia basada en patrones de puesta a cero para codificación de video

Country Status (11)

Country Link
US (1) US11032572B2 (es)
EP (1) EP3970367A1 (es)
JP (1) JP2022531913A (es)
KR (1) KR20220008265A (es)
CN (1) CN113812157A (es)
AR (1) AR118945A1 (es)
AU (1) AU2020278519A1 (es)
BR (1) BR112021022343A2 (es)
CL (1) CL2021003004A1 (es)
SG (1) SG11202111562TA (es)
WO (1) WO2020236509A1 (es)

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US11218728B2 (en) * 2019-06-04 2022-01-04 Tencent America LLC Method and apparatus for video coding
US11695960B2 (en) 2019-06-14 2023-07-04 Qualcomm Incorporated Transform and last significant coefficient position signaling for low-frequency non-separable transform in video coding
MX2021016152A (es) * 2019-06-19 2022-02-22 Lg Electronics Inc Se?alizacion de informacion que indica el conjunto de nucleo de transformacion en codificacion de imagen.
CN114342393A (zh) * 2019-07-12 2022-04-12 Lg 电子株式会社 基于变换的图像编译方法及其设备
WO2021010687A1 (ko) * 2019-07-12 2021-01-21 엘지전자 주식회사 변환에 기반한 영상 코딩 방법 및 그 장치
WO2021025528A1 (ko) * 2019-08-08 2021-02-11 엘지전자 주식회사 변환에 기반한 영상 코딩 방법 및 그 장치
US11677984B2 (en) 2019-08-20 2023-06-13 Qualcomm Incorporated Low-frequency non-separable transform (LFNST) signaling
US11184617B2 (en) 2019-09-19 2021-11-23 Qualcomm Incorporated Transform unit design for video coding
US11206400B2 (en) 2019-09-26 2021-12-21 Qualcomm Incorporated Low-frequency non-separable transform (LFNST) simplifications
WO2021066616A1 (ko) * 2019-10-04 2021-04-08 엘지전자 주식회사 변환에 기반한 영상 코딩 방법 및 그 장치
US11470353B2 (en) 2019-12-20 2022-10-11 Qualcomm Incorporated Low-frequency non-separable transform (LFNST) with reduced zero-out in video coding
US11457229B2 (en) 2019-12-23 2022-09-27 Qualcomm Incorporated LFNST signaling for chroma based on chroma transform skip
US11582491B2 (en) 2020-03-27 2023-02-14 Qualcomm Incorporated Low-frequency non-separable transform processing in video coding
US11871010B2 (en) 2020-10-02 2024-01-09 Qualcomm Incorporated Extended low-frequency non-separable transform (LFNST) designs with worst-case complexity handling
US11924471B2 (en) 2020-11-12 2024-03-05 Qualcomm Incorporated Context-based transform index signaling in video coding

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US9124872B2 (en) * 2012-04-16 2015-09-01 Qualcomm Incorporated Coefficient groups and coefficient coding for coefficient scans
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Also Published As

Publication number Publication date
EP3970367A1 (en) 2022-03-23
WO2020236509A1 (en) 2020-11-26
BR112021022343A2 (pt) 2022-01-04
SG11202111562TA (en) 2021-12-30
AR118945A1 (es) 2021-11-10
AU2020278519A1 (en) 2021-11-25
CN113812157A (zh) 2021-12-17
BR112021022343A8 (pt) 2021-12-28
US20200366937A1 (en) 2020-11-19
KR20220008265A (ko) 2022-01-20
JP2022531913A (ja) 2022-07-12
US11032572B2 (en) 2021-06-08

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