JP6565885B2 - 画像符号化装置、画像符号化方法及び画像符号化プログラム、並びに画像復号化装置、画像復号化方法及び画像復号化プログラム - Google Patents

画像符号化装置、画像符号化方法及び画像符号化プログラム、並びに画像復号化装置、画像復号化方法及び画像復号化プログラム Download PDF

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JP6565885B2
JP6565885B2 JP2016236507A JP2016236507A JP6565885B2 JP 6565885 B2 JP6565885 B2 JP 6565885B2 JP 2016236507 A JP2016236507 A JP 2016236507A JP 2016236507 A JP2016236507 A JP 2016236507A JP 6565885 B2 JP6565885 B2 JP 6565885B2
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division
image
dividing
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JP2018093416A5 (OSRAM
JP2018093416A (ja
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福島　茂
茂 福島
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JVCKenwood Corp
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JVCKenwood Corp
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Priority to JP2016236507A priority Critical patent/JP6565885B2/ja
Priority to MX2019003870A priority patent/MX2019003870A/es
Priority to CA3039023A priority patent/CA3039023C/en
Priority to MYPI2019001816A priority patent/MY194373A/en
Priority to EP23172432.9A priority patent/EP4221206A1/en
Priority to NZ752494A priority patent/NZ752494B2/en
Priority to IL294657A priority patent/IL294657B2/en
Priority to HRP20230736TT priority patent/HRP20230736T1/hr
Priority to HUE17877999A priority patent/HUE050910T2/hu
Priority to CA3203498A priority patent/CA3203498A1/en
Priority to ES17877999T priority patent/ES2823195T3/es
Priority to HUE21203998A priority patent/HUE062193T2/hu
Priority to EP17877999.7A priority patent/EP3554073B1/en
Priority to KR1020257016797A priority patent/KR20250079229A/ko
Priority to PL21203998.6T priority patent/PL4017002T3/pl
Priority to KR1020237004148A priority patent/KR102623073B1/ko
Priority to SG11201903285VA priority patent/SG11201903285VA/en
Priority to CN202110120412.9A priority patent/CN112954319B/zh
Priority to PL17877999T priority patent/PL3554073T3/pl
Priority to PT178779997T priority patent/PT3554073T/pt
Priority to CN202311509040.4A priority patent/CN117376560A/zh
Priority to RU2019109665A priority patent/RU2719560C9/ru
Priority to IL289392A priority patent/IL289392B/en
Priority to MYPI2022003498A priority patent/MY208781A/en
Priority to CN202311509677.3A priority patent/CN117376561A/zh
Priority to SG10202104184QA priority patent/SG10202104184QA/en
Priority to BR112019006726-4A priority patent/BR112019006726B1/pt
Priority to KR1020247000436A priority patent/KR102812875B1/ko
Priority to EP21203998.6A priority patent/EP4017002B1/en
Priority to LTEP17877999.7T priority patent/LT3554073T/lt
Priority to CA3119110A priority patent/CA3119110C/en
Priority to SI201730439T priority patent/SI3554073T1/sl
Priority to PCT/JP2017/021783 priority patent/WO2018105148A1/ja
Priority to IL300081A priority patent/IL300081B2/en
Priority to SM20200517T priority patent/SMT202000517T1/it
Priority to SG10202100541PA priority patent/SG10202100541PA/en
Priority to KR1020227011263A priority patent/KR20220047400A/ko
Priority to ES21203998T priority patent/ES2952360T3/es
Priority to EP20190069.3A priority patent/EP3754985B1/en
Priority to RS20201165A priority patent/RS60859B1/sr
Priority to KR1020197009363A priority patent/KR102385196B1/ko
Priority to AU2017371859A priority patent/AU2017371859B2/en
Priority to CN201780063661.0A priority patent/CN109845257B/zh
Priority to CN202311509097.4A priority patent/CN117354520A/zh
Priority to HRP20201637TT priority patent/HRP20201637T1/hr
Publication of JP2018093416A publication Critical patent/JP2018093416A/ja
Priority to US16/353,121 priority patent/US10893270B2/en
Priority to ZA2019/02023A priority patent/ZA201902023B/en
Priority to IL265767A priority patent/IL265767B/en
Priority to MX2022013106A priority patent/MX2022013106A/es
Priority to PH12019500745A priority patent/PH12019500745A1/en
Priority to CL2019001118A priority patent/CL2019001118A1/es
Publication of JP2018093416A5 publication Critical patent/JP2018093416A5/ja
Application granted granted Critical
Publication of JP6565885B2 publication Critical patent/JP6565885B2/ja
Priority to RU2020110218A priority patent/RU2740631C1/ru
Priority to ZA2020/01864A priority patent/ZA202001864B/en
Priority to AU2020239760A priority patent/AU2020239760B2/en
Priority to CY20201100942T priority patent/CY1123412T1/el
Priority to US17/115,191 priority patent/US12192456B2/en
Priority to RU2020143163A priority patent/RU2754635C9/ru
Priority to ZA2021/00894A priority patent/ZA202100894B/en
Priority to IL285356A priority patent/IL285356B/en
Priority to RU2021123907A priority patent/RU2770686C1/ru
Priority to AU2022203353A priority patent/AU2022203353B2/en
Priority to AU2023203329A priority patent/AU2023203329B2/en
Priority to CY20231100329T priority patent/CY1126111T1/el
Priority to US18/951,961 priority patent/US20250080734A1/en
Priority to AU2024266938A priority patent/AU2024266938A1/en
Priority to US18/964,123 priority patent/US20250097422A1/en
Priority to US18/964,099 priority patent/US20250097420A1/en
Priority to US18/964,103 priority patent/US20250097421A1/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
    • H04N19/10—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
    • H04N19/119—Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
    • 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
    • H04N19/122—Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
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    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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    • 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
    • H04N19/189—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding
    • H04N19/192—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding the adaptation method, adaptation tool or adaptation type being iterative or recursive
    • 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
    • H04N19/189—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding
    • H04N19/196—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters
    • 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
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • 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
    • 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
    • H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
    • 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
    • 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
    • H04N19/96—Tree coding, e.g. quad-tree coding

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
JP2016236507A 2016-12-06 2016-12-06 画像符号化装置、画像符号化方法及び画像符号化プログラム、並びに画像復号化装置、画像復号化方法及び画像復号化プログラム Active JP6565885B2 (ja)

Priority Applications (68)

Application Number Priority Date Filing Date Title
JP2016236507A JP6565885B2 (ja) 2016-12-06 2016-12-06 画像符号化装置、画像符号化方法及び画像符号化プログラム、並びに画像復号化装置、画像復号化方法及び画像復号化プログラム
SG10202100541PA SG10202100541PA (en) 2016-12-06 2017-06-13 Image encoding device, image encoding method, and image encoding program, and image decoding device, image decoding method, and image decoding program
ES21203998T ES2952360T3 (es) 2016-12-06 2017-06-13 Dispositivo de codificación de imágenes, procedimiento de codificación de imágenes, dispositivo de descodificación de imágenes y procedimiento de descodificación de imágenes
MYPI2019001816A MY194373A (en) 2016-12-06 2017-06-13 Image Encoding Device, Image Encoding Method, and Image Encoding Program, and Image Decoding Device, Image Decoding Method, and Image Decoding Program
EP23172432.9A EP4221206A1 (en) 2016-12-06 2017-06-13 Image coding device, image coding method, image coding program, image decoding device, image decoding method and image decoding program
NZ752494A NZ752494B2 (en) 2016-12-06 2017-06-13 Image coding device, image coding method, image coding program, image decoding device, image decoding method and image decoding program
IL294657A IL294657B2 (en) 2016-12-06 2017-06-13 Image encoding device, image encoding method, image encoding software
HRP20230736TT HRP20230736T1 (hr) 2016-12-06 2017-06-13 Uređaj za kodiranje slika, postupak kodiranja slike, uređaj za dekodiranje slike i postupak dekodiranja slike
HUE17877999A HUE050910T2 (hu) 2016-12-06 2017-06-13 Képkódoló eszköz, képkódolási módszer és képkódoló program, valamint képdekódoló eszköz, képdekódolási módszer és képdekódoló program
CA3203498A CA3203498A1 (en) 2016-12-06 2017-06-13 Image coding device, image coding method, and image coding program, and image decoding device, image decoding method and image decoding program
RS20201165A RS60859B1 (sr) 2016-12-06 2017-06-13 Uređaj za kodiranje slike, postupak kodiranja slike i program za kodiranje slike i uređaj za dekodiranje slike, postupak za dekodiranje slike i program za dekodiranje slike
HUE21203998A HUE062193T2 (hu) 2016-12-06 2017-06-13 Képkódoló eszköz, képkódolási eljárás, képdekódoló eszköz és képdekódolási eljárás
EP17877999.7A EP3554073B1 (en) 2016-12-06 2017-06-13 Image coding device, image coding method, image coding program, image decoding device, image decoding method and image decoding program
KR1020257016797A KR20250079229A (ko) 2016-12-06 2017-06-13 화상 부호화 장치, 화상 부호화 방법, 화상 복호화 장치, 화상 복호화 방법, 격납 방법, 및 전송 방법
PL21203998.6T PL4017002T3 (pl) 2016-12-06 2017-06-13 Urządzenie do kodowania obrazu, sposób kodowania obrazu, urządzenie do dekodowania obrazu oraz sposób dekodowania obrazu
KR1020237004148A KR102623073B1 (ko) 2016-12-06 2017-06-13 화상 부호화 장치, 화상 부호화 방법, 화상 복호화 장치, 및 화상 복호화 방법
SG11201903285VA SG11201903285VA (en) 2016-12-06 2017-06-13 Image encoding device, image encoding method, and image encoding program, and image decoding device, image decoding method, and image decoding program
CN202110120412.9A CN112954319B (zh) 2016-12-06 2017-06-13 图像编码装置、图像编码方法、图像解码装置和图像解码方法
PL17877999T PL3554073T3 (pl) 2016-12-06 2017-06-13 Urządzenie do kodowania obrazu, sposób kodowania obrazu, program do kodowania obrazu, urządzenie do dekodowania obrazu, sposób dekodowania obrazu oraz program do dekodowania obrazu
PT178779997T PT3554073T (pt) 2016-12-06 2017-06-13 Dispositivo de codificação de imagem, método de codificação de imagem, programa de codificação de imagem, dispositivo de descodificação de imagem, método de descodificação de imagem e programa de descodificação de imagem
CN202311509040.4A CN117376560A (zh) 2016-12-06 2017-06-13 图像编码装置和方法、以及图像解码装置和方法
RU2019109665A RU2719560C9 (ru) 2016-12-06 2017-06-13 Устройство кодирования изображения, способ кодирования изображения и программа кодирования изображения, а также устройство декодирования изображения, способ декодирования изображения и программа декодирования изображения
IL289392A IL289392B (en) 2016-12-06 2017-06-13 Image encoding device, image encoding method, image encoding software
MYPI2022003498A MY208781A (en) 2016-12-06 2017-06-13 Image encoding device, image encoding method, and image encoding program, and image decoding device, image decoding method, and image decoding program
CN202311509677.3A CN117376561A (zh) 2016-12-06 2017-06-13 图像编码装置和方法、以及图像解码装置和方法
SG10202104184QA SG10202104184QA (en) 2016-12-06 2017-06-13 Image encoding device, image encoding method, and image encoding program, and image decoding device, image decoding method, and image decoding program
BR112019006726-4A BR112019006726B1 (pt) 2016-12-06 2017-06-13 Dispositivo de codificação de imagem, método de codificação de imagem, dispositivo de decodificação de imagem e método de decodificação de imagem
KR1020247000436A KR102812875B1 (ko) 2016-12-06 2017-06-13 화상 부호화 장치, 화상 부호화 방법, 화상 복호화 장치, 화상 복호화 방법, 격납 방법, 및 전송 방법
EP21203998.6A EP4017002B1 (en) 2016-12-06 2017-06-13 Image coding device, image coding method, image decoding device and image decoding method
LTEP17877999.7T LT3554073T (lt) 2016-12-06 2017-06-13 Vaizdo kodavimo įtaisas, vaizdo kodavimo būdas, vaizdo kodavimo programa, vaizdo dekodavimo įtaisas, vaizdo dekodavimo būdas ir vaizdo dekodavimo programa
CA3119110A CA3119110C (en) 2016-12-06 2017-06-13 Image coding device, image coding method, and image coding program, and image decoding device, image decoding method and image decoding program
SI201730439T SI3554073T1 (sl) 2016-12-06 2017-06-13 Naprava za kodiranje slike, postopek za kodiranje slike in program za kodiranje slike ter naprava za dekodiranje slike, postopek za dekodiranje slike in program za dekodiranje slike
PCT/JP2017/021783 WO2018105148A1 (ja) 2016-12-06 2017-06-13 画像符号化装置、画像符号化方法及び画像符号化プログラム、並びに画像復号化装置、画像復号化方法及び画像復号化プログラム
IL300081A IL300081B2 (en) 2016-12-06 2017-06-13 Image encoding device, image encoding method, and image encoding program, and image decoding device, image decoding method, and image decoding program
SM20200517T SMT202000517T1 (it) 2016-12-06 2017-06-13 Dispositivo di codifica di immagini, metodo di codifica di immagini, programma di codifica di immagini, dispositivo di decodifica di immagini, metodo di decodifica di immagini e programma di decodifica di immagini
MX2019003870A MX2019003870A (es) 2016-12-06 2017-06-13 Dispositivo de codificacion de imagenes, metodo de codificacion de imagenes, programa de codificacion de imagenes, dispositivo de descodificacion de imagenes, metodo de descodificacion de imagenes y programa de descodificacion de imagenes.
KR1020227011263A KR20220047400A (ko) 2016-12-06 2017-06-13 화상 부호화 장치, 화상 부호화 방법, 화상 복호화 장치, 및 화상 복호화 방법
EP20190069.3A EP3754985B1 (en) 2016-12-06 2017-06-13 Image coding device, image coding method, image decoding device and image decoding method
CA3039023A CA3039023C (en) 2016-12-06 2017-06-13 Image coding and decoding devices and methods adapted to control recursive block segmentation to be halving or quartering operations
ES17877999T ES2823195T3 (es) 2016-12-06 2017-06-13 Dispositivo de codificación de imagen, procedimiento de codificación de imagen, programa de codificación de imagen, dispositivo de decodificación de imagen, procedimiento de decodificación de imagen y programa de decodificación de imagen
KR1020197009363A KR102385196B1 (ko) 2016-12-06 2017-06-13 화상 부호화 장치, 화상 부호화 방법 및 화상 부호화 프로그램이 기록된 기록 매체, 그리고 화상 복호화 장치, 화상 복호화 방법 및 화상 복호화 프로그램이 기록된 기록 매체
AU2017371859A AU2017371859B2 (en) 2016-12-06 2017-06-13 Image coding device, image coding method, image coding program, image decoding device, image decoding method and image decoding program
CN201780063661.0A CN109845257B (zh) 2016-12-06 2017-06-13 图像编码装置和方法、图像解码装置和方法、及存储介质
CN202311509097.4A CN117354520A (zh) 2016-12-06 2017-06-13 图像编码装置和方法、以及图像解码装置和方法
HRP20201637TT HRP20201637T1 (hr) 2016-12-06 2017-06-13 Uređaj za kodiranje slika, postupak kodiranja slika, program za kodiranje slika, uređaj za dekodiranje slika, postupak dekodiranja slika i program za dekodiranje slika
US16/353,121 US10893270B2 (en) 2016-12-06 2019-03-14 Image encoding device, image encoding method, and image encoding program, and image decoding device, image decoding method, and image decoding program
ZA2019/02023A ZA201902023B (en) 2016-12-06 2019-04-01 Image coding device, image coding method, image coding program, image decoding device, image decoding method and image decoding program
IL265767A IL265767B (en) 2016-12-06 2019-04-02 Image encoding device, image encoding method, image encoding software
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US17/115,191 US12192456B2 (en) 2016-12-06 2020-12-08 Image encoding device, image encoding method, and image encoding program, and image decoding device, image decoding method, and image decoding program
RU2020143163A RU2754635C9 (ru) 2016-12-06 2020-12-25 Устройство кодирования изображения, способ кодирования изображения и считываемый компьютером носитель записи с программой кодирования изображения, а также устройство декодирования изображения, способ декодирования изображения и считываемый компьютером носитель записи с программой декодирования изображения
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IL285356A IL285356B (en) 2016-12-06 2021-08-04 Image encoding device, image encoding method, image encoding software
RU2021123907A RU2770686C1 (ru) 2016-12-06 2021-08-11 Устройство кодирования изображения, способ кодирования изображения, устройство декодирования изображения и способ декодирования изображения
AU2022203353A AU2022203353B2 (en) 2016-12-06 2022-05-18 Image coding device, image coding method, image coding program, image decoding device, image decoding method and image decoding program
AU2023203329A AU2023203329B2 (en) 2016-12-06 2023-05-29 Image coding device, image coding method, image coding program, image decoding device, image decoding method and image decoding program
CY20231100329T CY1126111T1 (el) 2016-12-06 2023-07-12 Συσκευη κωδικοποιησης εικονας, μεθοδος κωδικοποιησης εικονας, συσκευη αποκωδικοποιησης εικονας και μεθοδος αποκωδικοποιησης εικονας
US18/951,961 US20250080734A1 (en) 2016-12-06 2024-11-19 Image encoding device, image encoding method, and image encoding program, and image decoding device, image decoding method, and image decoding program
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