METHOD AND APPARATUS FOR ENTROPY ENCODING USING HIERARCHICAL DATA UNIT, AND METHOD AND APPARATUS FOR DECODING

Title:

METHOD AND APPARATUS FOR ENTROPY ENCODING USING HIERARCHICAL DATA UNIT, AND METHOD AND APPARATUS FOR DECODING

Document Type and Number:

Japanese Patent JP2015167379

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a video decoding method and apparatus.SOLUTION: A method comprises: obtaining, from a bitstream, a split transformation flag indicating whether a transformation unit included in a coding unit is split; determining a size of at least one transformation unit on the basis of the split transformation flag; determining a context model on the basis of the size of the transformation unit and a color type of a picture to which the transformation unit belongs; extracting a transformation coefficient flag indicating whether there exists a non-zero transformation coefficient in blocks of the transformation unit by entropy-decoding the bitstream by using the determined context model; and obtaining a transformation coefficient included in the transformation unit on the basis of the transformation coefficient flag.

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Inventors:

LEE TAMMY
CHEN JIANLE

Application Number:

JP2015088253A

Publication Date:

September 24, 2015

Filing Date:

April 23, 2015

Export Citation:

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Assignee:

SAMSUNG ELECTRONICS CO LTD

International Classes:

H04N19/13; H04N19/122; H04N19/157; H04N19/176; H04N19/186; H04N19/70

Domestic Patent References:

JP2014521244A

2014-08-25

Foreign References:

WO2012176463A1	2012-12-27
WO2012167097A1	2012-12-06
WO2010002214A2	2010-01-07
WO2012176463A1	2012-12-27
WO2012167097A1	2012-12-06

Other References:

JPN6015038136; Ｘｉａｏｙｉｎ　Ｃｈｅ　ｅｔ　ａｌ．: 'Ｅｎｈａｎｃｅｄ　Ｃｏｎｔｅｘｔ　Ｍｏｄｅｌｉｎｇ　ｆｏｒ　Ｓｋｉｐ　ａｎｄ　Ｓｐｌｉｔ　Ｆｌａｇ' Ｊｏｉｎｔ　Ｃｏｌｌａｂｏｒａｔｉｖｅ　Ｔｅａｍ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｄｉｎｇ　（ＪＣＴ-ＶＣ）　ｏｆ　ＩＴＵ-Ｔ　ＳＧ１６　ＷＰ３　ａｎｄ　ＩＳＯ／ＩＥＣ　ＪＴＣ１／ＳＣ２９／ＷＧ１１ＪＣＴＶＣ-Ｄ２５４, 201101, ｐｐ．１-４, ４ｔｈ　Ｍｅｅｔｉｎｇ：　Ｄａｅｇｕ，　ＫＲ
JPN6016008976; Ｖｉｖｉｅｎｎｅ　Ｓｚｅ　ａｎｄ　Ｍａｄｈｕｋａｒ　Ｂｕｄａｇａｖｉ: 'ＣＥ１１：　Ｒｅｄｕｃｅｄ　ｎｅｉｇｈｂｏｒｉｎｇ　ｄｅｐｅｎｄｅｎｃｙ　ｉｎ　ｃｏｎｔｅｘｔ　ｓｅｌｅｃｔｉｏｎ　ｏｆ　ｓｉｇｎｉｆｉｃａｎｔ＿ｃｏｅｆｆ＿ｆｌａｇ　ｆｏｒ　ｐａｒａｌｌｅｌ　ｐｒｏ' Ｊｏｉｎｔ　Ｃｏｌｌａｂｏｒａｔｉｖｅ　Ｔｅａｍ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｄｉｎｇ　（ＪＣＴ-ＶＣ）　ｏｆ　ＩＴＵ-Ｔ　ＳＧ１６　ＷＰ３　ａｎｄ　ＩＳＯ／ＩＥＣ　ＪＴＣ１／ＳＣ２９／ＷＧ１１ＪＣＴＶＣ-Ｆ１２８, 201106, ｐｐ．１-５, ６ｔｈ　Ｍ
JPN6016008972; Ｃｈｒｉｓｔｏｐｈｅｒ　Ｒｏｓｅｗａｒｎｅ　ａｎｄ　Ｍｉｔｓｕｒｕ　Ｍａｅｄａ: 'Ｐｒｅｄｉｃｔｅｄ　ｎｅｉｇｈｂｏｕｒ　ｆｏｒ　ｃｏｎｔｅｘｔ　ｓｅｌｅｃｔｉｏｎ　ｏｆ　ｓｉｇｎｉｆｉｃａｎｔ＿ｃｏｅｆｆ＿ｆｌａｇ　ｆｏｒ　ｐａｒａｌｌｅｌ　ｐｒｏｃｅｓｓｉｎｇ' Ｊｏｉｎｔ　Ｃｏｌｌａｂｏｒａｔｉｖｅ　Ｔｅａｍ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｄｉｎｇ　（ＪＣＴ-ＶＣ）　ｏｆ　ＩＴＵ-Ｔ　ＳＧ１６　ＷＰ３　ａｎｄ　ＩＳＯ／ＩＥＣ　ＪＴＣ１／ＳＣ２９／ＷＧ１１ＪＣＴＶＣ-Ｆ１８６＿ｒ１, 201106, ｐｐ．１-６, ６ｔｈ　Ｍｅ
JPN6015038140; Ｊｉａｎｌｅ　Ｃｈｅｎ　ａｎｄ　Ｔａｍｍｙ　Ｌｅｅ: 'Ｓｉｍｐｌｉｆｉｅｄ　ｃｏｎｔｅｘｔ　ｍｏｄｅｌ　ｓｅｌｅｃｔｉｏｎ　ｆｏｒ　ｂｌｏｃｋ　ｌｅｖｅｌ　ｓｙｎｔａｘ　ｃｏｄｉｎｇ' Ｊｏｉｎｔ　Ｃｏｌｌａｂｏｒａｔｉｖｅ　Ｔｅａｍ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｄｉｎｇ　（ＪＣＴ-ＶＣ）　ｏｆ　ＩＴＵ-Ｔ　ＳＧ１６　ＷＰ３　ａｎｄ　ＩＳＯ／ＩＥＣ　ＪＴＣ１／ＳＣ２９／ＷＧ１１ＪＣＴＶＣ-Ｆ４９７, 201107, ｐｐ．１-８, ６ｔｈ　Ｍｅｅｔｉｎｇ：　Ｔｏｒｉｎｏ，　ＩＴ
JPN6015038141; Ｗｅｉ-Ｊｕｎｇ　Ｃｈｉｅｎ　ｅｔ　ａｌ．: 'Ｍｅｍｏｒｙ　ａｎｄ　Ｐａｒｓｉｎｇ　Ｆｒｉｅｎｄｌｙ　ＣＡＢＡＣ　Ｃｏｎｔｅｘｔ' Ｊｏｉｎｔ　Ｃｏｌｌａｂｏｒａｔｉｖｅ　Ｔｅａｍ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｄｉｎｇ　（ＪＣＴ-ＶＣ）　ｏｆ　ＩＴＵ-Ｔ　ＳＧ１６　ＷＰ３　ａｎｄ　ＩＳＯ／ＩＥＣ　ＪＴＣ１／ＳＣ２９／ＷＧ１１ＪＣＴＶＣ-Ｆ６０６＿ｒ２, 201107, ｐｐ．１-１７, ６ｔｈ　Ｍｅｅｔｉｎｇ：　Ｔｏｒｉｎｏ，　ＩＴ
JPN6015038138; Ｋｅｎ　ＭｃＣａｎｎ　ｅｔ　ａｌ．: 'Ｓａｍｓｕｎｇ'ｓ　Ｒｅｓｐｏｎｓｅ　ｔｏ　ｔｈｅ　Ｃａｌｌ　ｆｏｒ　Ｐｒｏｐｏｓａｌｓ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｍｐｒｅｓｓｉｏｎ　Ｔｅｃｈｎｏｌｏｇｙ' Ｊｏｉｎｔ　Ｃｏｌｌａｂｏｒａｔｉｖｅ　Ｔｅａｍ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｄｉｎｇ　（ＪＣＴ-ＶＣ）　ｏｆ　ＩＴＵ-Ｔ　ＳＧ１６　ＷＰ３　ａｎｄ　ＩＳＯ／ＩＥＣ　ＪＴＣ１／ＳＣ２９／ＷＧ１１ＪＣＴＶＣ-Ａ１２４, 201004, ｐｐ．１-１１, １ｓｔ　Ｍｅｅｔｉｎｇ：　Ｄｒｅｓｄｅｎ，　ＤＥ
JPN6015038136; Ｘｉａｏｙｉｎ　Ｃｈｅ　ｅｔ　ａｌ．: 'Ｅｎｈａｎｃｅｄ　Ｃｏｎｔｅｘｔ　Ｍｏｄｅｌｉｎｇ　ｆｏｒ　Ｓｋｉｐ　ａｎｄ　Ｓｐｌｉｔ　Ｆｌａｇ' Ｊｏｉｎｔ　Ｃｏｌｌａｂｏｒａｔｉｖｅ　Ｔｅａｍ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｄｉｎｇ　（ＪＣＴ-ＶＣ）　ｏｆ　ＩＴＵ-Ｔ　ＳＧ１６　ＷＰ３　ａｎｄ　ＩＳＯ／ＩＥＣ　ＪＴＣ１／ＳＣ２９／ＷＧ１１ＪＣＴＶＣ-Ｄ２５４, 201101, ｐｐ．１-４, ４ｔｈ　Ｍｅｅｔｉｎｇ：　Ｄａｅｇｕ，　ＫＲ
JPN6016008976; Ｖｉｖｉｅｎｎｅ　Ｓｚｅ　ａｎｄ　Ｍａｄｈｕｋａｒ　Ｂｕｄａｇａｖｉ: 'ＣＥ１１：　Ｒｅｄｕｃｅｄ　ｎｅｉｇｈｂｏｒｉｎｇ　ｄｅｐｅｎｄｅｎｃｙ　ｉｎ　ｃｏｎｔｅｘｔ　ｓｅｌｅｃｔｉｏｎ　ｏｆ　ｓｉｇｎｉｆｉｃａｎｔ＿ｃｏｅｆｆ＿ｆｌａｇ　ｆｏｒ　ｐａｒａｌｌｅｌ　ｐｒｏ' Ｊｏｉｎｔ　Ｃｏｌｌａｂｏｒａｔｉｖｅ　Ｔｅａｍ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｄｉｎｇ　（ＪＣＴ-ＶＣ）　ｏｆ　ＩＴＵ-Ｔ　ＳＧ１６　ＷＰ３　ａｎｄ　ＩＳＯ／ＩＥＣ　ＪＴＣ１／ＳＣ２９／ＷＧ１１ＪＣＴＶＣ-Ｆ１２８, 201106, ｐｐ．１-５, ６ｔｈ　Ｍ
JPN6016008972; Ｃｈｒｉｓｔｏｐｈｅｒ　Ｒｏｓｅｗａｒｎｅ　ａｎｄ　Ｍｉｔｓｕｒｕ　Ｍａｅｄａ: 'Ｐｒｅｄｉｃｔｅｄ　ｎｅｉｇｈｂｏｕｒ　ｆｏｒ　ｃｏｎｔｅｘｔ　ｓｅｌｅｃｔｉｏｎ　ｏｆ　ｓｉｇｎｉｆｉｃａｎｔ＿ｃｏｅｆｆ＿ｆｌａｇ　ｆｏｒ　ｐａｒａｌｌｅｌ　ｐｒｏｃｅｓｓｉｎｇ' Ｊｏｉｎｔ　Ｃｏｌｌａｂｏｒａｔｉｖｅ　Ｔｅａｍ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｄｉｎｇ　（ＪＣＴ-ＶＣ）　ｏｆ　ＩＴＵ-Ｔ　ＳＧ１６　ＷＰ３　ａｎｄ　ＩＳＯ／ＩＥＣ　ＪＴＣ１／ＳＣ２９／ＷＧ１１ＪＣＴＶＣ-Ｆ１８６＿ｒ１, 201106, ｐｐ．１-６, ６ｔｈ　Ｍｅ
JPN6015038140; Ｊｉａｎｌｅ　Ｃｈｅｎ　ａｎｄ　Ｔａｍｍｙ　Ｌｅｅ: 'Ｓｉｍｐｌｉｆｉｅｄ　ｃｏｎｔｅｘｔ　ｍｏｄｅｌ　ｓｅｌｅｃｔｉｏｎ　ｆｏｒ　ｂｌｏｃｋ　ｌｅｖｅｌ　ｓｙｎｔａｘ　ｃｏｄｉｎｇ' Ｊｏｉｎｔ　Ｃｏｌｌａｂｏｒａｔｉｖｅ　Ｔｅａｍ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｄｉｎｇ　（ＪＣＴ-ＶＣ）　ｏｆ　ＩＴＵ-Ｔ　ＳＧ１６　ＷＰ３　ａｎｄ　ＩＳＯ／ＩＥＣ　ＪＴＣ１／ＳＣ２９／ＷＧ１１ＪＣＴＶＣ-Ｆ４９７, 201107, ｐｐ．１-８, ６ｔｈ　Ｍｅｅｔｉｎｇ：　Ｔｏｒｉｎｏ，　ＩＴ
JPN6015038141; Ｗｅｉ-Ｊｕｎｇ　Ｃｈｉｅｎ　ｅｔ　ａｌ．: 'Ｍｅｍｏｒｙ　ａｎｄ　Ｐａｒｓｉｎｇ　Ｆｒｉｅｎｄｌｙ　ＣＡＢＡＣ　Ｃｏｎｔｅｘｔ' Ｊｏｉｎｔ　Ｃｏｌｌａｂｏｒａｔｉｖｅ　Ｔｅａｍ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｄｉｎｇ　（ＪＣＴ-ＶＣ）　ｏｆ　ＩＴＵ-Ｔ　ＳＧ１６　ＷＰ３　ａｎｄ　ＩＳＯ／ＩＥＣ　ＪＴＣ１／ＳＣ２９／ＷＧ１１ＪＣＴＶＣ-Ｆ６０６＿ｒ２, 201107, ｐｐ．１-１７, ６ｔｈ　Ｍｅｅｔｉｎｇ：　Ｔｏｒｉｎｏ，　ＩＴ

Attorney, Agent or Firm:

Tadashige Ito
Tadahiko Ito
Shinsuke Onuki

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