DK3282707T3 - Fremgangsmåde og afkodning af bevægelsesinformation - Google Patents

Fremgangsmåde og afkodning af bevægelsesinformation Download PDF

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DK3282707T3
DK3282707T3 DK17189965.1T DK17189965T DK3282707T3 DK 3282707 T3 DK3282707 T3 DK 3282707T3 DK 17189965 T DK17189965 T DK 17189965T DK 3282707 T3 DK3282707 T3 DK 3282707T3
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prediction
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motion vector
motion information
units
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Tammy Lee
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Samsung Electronics Co Ltd
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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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/513—Processing of motion vectors
    • H04N19/517—Processing of motion vectors by encoding
    • H04N19/52—Processing of motion vectors by encoding by predictive encoding
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/20—Analysis of motion
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image 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
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/105—Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
    • H—ELECTRICITY
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    • 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
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/11—Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
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    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04N19/573—Motion compensation with multiple frame prediction using two or more reference frames in a given prediction direction
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    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
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    • H04N19/103—Selection of coding mode or of prediction mode
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    • H04N19/129—Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
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    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • H04N19/139—Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
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    • 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
    • H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
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    • 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
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  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Claims (5)

1. Fremgangsmåde til afkodning af en bevægelsesvektor, hvilken fremgangsmåde omfatter: at bestemme hvorvidt bevægelsesvektorer af rumlige forudsigelsesenheder, som er rumligt sammenstillet med en nuværende forudsigelsesenhed og bevægelsesvektorer af tidsmæssige forudsigelsesenheder, der er tidsmæssigt sammenstillet til den nuværende forudsigelsesenhed, er tilgængelige (2510); at bestemme de tilgængelige bevægelsesvektorer, som bevægelsesvektorforudsigelseskandidater; kendetegnet ved, at: generere mindst én kombineret dobbeltrettet bevægelsesvektor, ved at kombinere en ledig bevægelsesvektor blandt de ledige bevægelsesvektorer, som angiver en billedeblok i referencebilledliste 0 og en ledig bevægelsesvektor, blandt de ledige bevægelsesvektorer, som angiver en billedeblok i referencebilledliste 1, når antallet af bevægelsesvektorforudsigelseskandidaterne er mindre end et forudbestemt antal 'ri, hvor n er et heltal; tilføje den mindst ene kombinerede dobbeltrettet bevægelsesvektor til bevægelsesvektorforudsigelseskandidaterne; tilføje en bevægelsesvektor med en forudbestemt komponentværdi til bevægelsesvektorforudsigelseskandidaterne, således at et totalt antal bevægelsesvektorforudsigelseskandidater er det forudbestemte antal n (2520), når antallet af bevægelsesvektorforudsigelseskandidaterne er mindre end det forudbestemte antal 'ri, hvor den forudbestemte komponentværdi er (0, 0); tilvejebringe information, som indikerer en bevægelsesvektorforudsiger blandt bevægelsesvektorforudsigelseskandidaterne, fra en bitstrøm (2530); og tilvejebringe bevægelsesvektorforudsigeren for den nuværende forudsigelsesenhed, baseret på informationen (2540).
2. Fremgangsmåden ifølge krav 1, hvor bestemmelsen om hvorvidt bevægelsesvektorer er tilgængelige, omfatter: at søge forudbestemte forudsigelsesenheder, som er placeret over den nuværende forudsigelsesenhed, i en forudbestemt scanningsrækkefølge, og at vælge en bevægelsesvektor af en første øvre forudsigelsesenhed, som har en tilgængelig bevægelsesvektor, som en øvre rumlig bevægelsesvektorforudsigelseskandidat af den nuværende forudsigelsesenhed; og at søge forudbestemte forudsigelsesenheder, som er placeret til venstre for den nuværende forudsigelsesenhed, i en forudbestemt scanningsrækkefølge, og at udvælge en bevægelsesvektor af en første venstre forudsigelsesenhed, der har en ledig bevægelsesvektor, som en venstre rumlig bevægelsesvektorforudsigelseskandidat af den nuværende forudsigelsesenhed.
3. Fremgangsmåden ifølge krav 1, hvor fremgangsmåden yderligere omfatter, at generere en yderligere bevægelsesvektorforudsigelseskandidat, ved at tilføje eller subtrahere en forudbestemt forskydning til og fra en bevægelsesvektor for referencebilledlisten 0, og en bevægelsesvektor for referencebilledlisten 1 af den dobbeltrettede bevægelsesvektor, når de tilgængelige bevægelsesvektorer fra de rumlige forudsigelsesenheder og tidsmæssige forudsigelsesenheder omfatter en dobbeltrettet bevægelsesvektor.
4. Fremgangsmåden ifølge krav 3, hvor forskydningen tilføjes til bevægelsesvektoren for referencebilledlisten 0 og bevægelsesvektoren for referencebilledlisten 1, når et første referencebillede i referencebilledlisten 0 og et andet referencebillede i referencebilledlisten 1, er placeret på samme sted, baseret på et nuværende billede, som omfatter den nuværende forudsigelsesenhed, og hvor forskydningen tilføjes til bevægelsesvektoren for referencebilledlisten 0, og en værdi, som opnås ved, at multiplicere forskydningen med -1 tilføjes til bevægelsesvektoren for referencebilledlisten 1, når det nuværende billede er placeret mellem det første referencebillede i referencebilledlisten 0 og det andet referencebillede i referencebilledlisten 1.
5. Fremgangsmåden ifølge krav 1, hvor fremgangsmåden yderligere omfatter, at ændre en ledig bevægelsesvektor for referencebilledlisten 0, til en bevægelsesvektor for referencebilledlisten 1, og at ændre en ledig bevægelsesvektor for referencebilledlisten 1, til en bevægelsesvektor for referencebilledlisten 1, for at generere den yderligere bevægelsesvektorforudsigelseskandidat.
DK17189965.1T 2011-06-27 2012-06-27 Fremgangsmåde og afkodning af bevægelsesinformation DK3282707T3 (da)

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US201161501300P 2011-06-27 2011-06-27
EP12805144.8A EP2725800A4 (en) 2011-06-27 2012-06-27 METHOD AND APPARATUS FOR ENCODING MOTION INFORMATION AND METHOD AND APPARATUS FOR DECODING

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CN (6) CN106982373B (da)
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HR (1) HRP20181873T1 (da)
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