DEVICE FOR DECODING IMAGE - ELECT & TELECOMM RESEARCH INST

Title:

DEVICE FOR DECODING IMAGE

Document Type and Number:

Japanese Patent JP2015080240

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a predictive block generation method and device for improving image encoding/decoding efficiency through reducing operational complexity.SOLUTION: On the basis of display order (POC) values of a reference picture in a present block and a reference picture in a reference block to be used for inter-screen prediction of the present block, regarding a motion vector in the reference block, whether to execute scaling is determined. By calculating S1210 first and second values on the basis of a POC differential value between pictures, scaling is performed on the motion vector in the reference block. An offset value is calculated S1220 by performing an arithmetic right shift by a binary digit 1 upon an absolute value of the first value. An inverse proportion value of the first value is calculated S1230 by using the offset value and when it is determined to perform scaling on the motion vector in the reference block, on the basis of the inverse proportion value of the first value and the second value, a scaling factor is calculated S1240.

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WO/2012/043541	PREDICTION VECTOR GENERATION METHOD, IMAGE ENCODING METHOD, IMAGE DECODING METHOD, PREDICTION VECTOR GENERATION DEVICE, IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, PREDICTION VECTOR GENERATION PROGRAM, IMAGE ENCODING PROGRAM, AND IMAGE DECODING PROGRAM
JP2001177837	IMAGE TRANSMISSION SYSTEM
JP2008301396	MOVING IMAGE COMMUNICATION DEVICE, SEMICONDUCTOR INTEGRATED CIRCUIT FOR MOVING IMAGE COMMUNICATION, AND MOVING IMAGE COMMUNICATION METHOD

Inventors:

KIM HUI YONG
LEE JIN-HO
LIM SUNG CHANG
CHOI JIN SOO
KIM JIN WOONG

Application Number:

JP2014243486A

Publication Date:

April 23, 2015

Filing Date:

December 01, 2014

Export Citation:

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Assignee:

ELECT & TELECOMM RESEARCH INST

International Classes:

H04N19/50; H04N19/513; H04N19/105; H04N19/167; H04N19/176; H04N19/196

Foreign References:

WO2012005549A2

2012-01-12

Other References:

JPN6014055308; Ｉｌ-Ｋｏｏ　Ｋｉｍ，　Ｙｏｕｎｇｏ　Ｐａｒｋ，　Ｎｉｋｏｌａｙ　Ｓｈｌｙａｋｈｏｖ，　ＪｅｏｎｇＨｏｏｎ　Ｐａｒｋ: 'Ｒｅｓｔｒｉｃｔｉｏｎ　ｏｎ　ｍｏｔｉｏｎ　ｖｅｃｔｏｒ　ｓｃａｌｉｎｇ　ｆｏｒ　Ｍｅｒｇｅ　ａｎｄ　ＡＭＶＰ' Ｊｏｉｎｔ　Ｃｏｌｌａｂｏｒａｔｉｖｅ　Ｔｅａｍ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｄｉｎｇ　（ＪＣＴ-ＶＣ）　ｏｆ　ＩＴＵ-Ｔ　ＳＧ１６　ＷＰ３　ａｎｄ　ＩＳＯ／ＩＥＣ　ＪＴＣ１／ＳＣ２９／ＷＧ１１　７ｔｈ　Ｍ［ＪＣＴＶＣ-Ｇ５５１］, 20111130, ｐｐ．１-４
JPN6014055309; Ｉｌ-Ｋｏｏ　Ｋｉｍ，　Ｗｏｏ-Ｊｉｎ　Ｈａｎ，　ＪｅｏｎｇＨｏｏｎ　Ｐａｒｋ: 'Ｒｅｄｕｃｔｉｏｎ　ｏｆ　ｒｅｆｅｒｅｎｃｅ　ｐｉｃｔｕｒｅ　ｌｉｓｔ　ｃｈｅｃｋｉｎｇ　ｆｏｒ　ｔｅｍｐｏｒａｌ　ｍｏｔｉｏｎ　ｖｅｃｔｏｒ　ｐｒｅｄｉｃｔｉｏｎ' Ｊｏｉｎｔ　Ｃｏｌｌａｂｏｒａｔｉｖｅ　Ｔｅａｍ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｄｉｎｇ　（ＪＣＴ-ＶＣ）　ｏｆ　ＩＴＵ-Ｔ　ＳＧ１６　ＷＰ３　ａｎｄ　ＩＳＯ／ＩＥＣ　ＪＴＣ１／ＳＣ２９／ＷＧ１１　６ｔｈ　Ｍ［ＪＣＴＶＣ-Ｆ５８７］, 20110722, ｐｐ．１-１０
JPN6014055306; Ｔｚｕ-Ｄｅｒ　Ｃｈｕａｎｇ，　Ｊｉａｎ-Ｌｉａｎｇ　Ｌｉｎ，　Ｃｈｉｎｇ-Ｙｅｈ　Ｃｈｅｎ，　Ｙｉ-Ｗｅｎ，　Ｙｕ-Ｗｅｎ　Ｈｕａｎｇ，　Ｓｈａｗｍｉｎ　Ｌｅｉ: 'Ｎｏｎ-ＣＥ９：　Ｄｉｖｉｓｉｏｎ-ｆｒｅｅ　ＭＶ　ｓｃａｌｉｎｇ' Ｊｏｉｎｔ　Ｃｏｌｌａｂｏｒａｔｉｖｅ　Ｔｅａｍ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｄｉｎｇ　（ＪＣＴ-ＶＣ）　ｏｆ　ＩＴＵ-Ｔ　ＳＧ１６　ＷＰ３　ａｎｄ　ＩＳＯ／ＩＥＣ　ＪＴＣ１／ＳＣ２９／ＷＧ１１　７ｔｈ　Ｍ［ＪＣＴＶＣ-Ｇ２２３］, 20111130, ｐｐ．１-６
CSNC201318035625; Ｔｚｕ-Ｄｅｒ　Ｃｈｕａｎｇ，　Ｊｉａｎ-Ｌｉａｎｇ　Ｌｉｎ，　Ｃｈｉｎｇ-Ｙｅｈ　Ｃｈｅｎ，　Ｙｉ-Ｗｅｎ，　Ｙｕ-Ｗｅｎ　Ｈｕａｎｇ，　Ｓｈａｗｍｉｎ　Ｌｅｉ: 'Ｎｏｎ-ＣＥ９：　Ｄｉｖｉｓｉｏｎ-ｆｒｅｅ　ＭＶ　ｓｃａｌｉｎｇ' Ｊｏｉｎｔ　Ｃｏｌｌａｂｏｒａｔｉｖｅ　Ｔｅａｍ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｄｉｎｇ　（ＪＣＴ-ＶＣ）　ｏｆ　ＩＴＵ-Ｔ　ＳＧ１６　ＷＰ３　ａｎｄ　ＩＳＯ／ＩＥＣ　ＪＴＣ１／ＳＣ２９／ＷＧ１１　７ｔｈ　Ｍ［ＪＣＴＶＣ-Ｇ２２３］, 20111130, ｐｐ．１-６
CSNC201318036546; Ｉｌ-Ｋｏｏ　Ｋｉｍ，　Ｙｏｕｎｇｏ　Ｐａｒｋ，　Ｎｉｋｏｌａｙ　Ｓｈｌｙａｋｈｏｖ，　ＪｅｏｎｇＨｏｏｎ　Ｐａｒｋ: 'Ｒｅｓｔｒｉｃｔｉｏｎ　ｏｎ　ｍｏｔｉｏｎ　ｖｅｃｔｏｒ　ｓｃａｌｉｎｇ　ｆｏｒ　Ｍｅｒｇｅ　ａｎｄ　ＡＭＶＰ' Ｊｏｉｎｔ　Ｃｏｌｌａｂｏｒａｔｉｖｅ　Ｔｅａｍ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｄｉｎｇ　（ＪＣＴ-ＶＣ）　ｏｆ　ＩＴＵ-Ｔ　ＳＧ１６　ＷＰ３　ａｎｄ　ＩＳＯ／ＩＥＣ　ＪＴＣ１／ＳＣ２９／ＷＧ１１　７ｔｈ　Ｍ［ＪＣＴＶＣ-Ｇ５５１］, 20111130, ｐｐ．１-４
CSNC201318026517; Ｉｌ-Ｋｏｏ　Ｋｉｍ，　Ｗｏｏ-Ｊｉｎ　Ｈａｎ，　ＪｅｏｎｇＨｏｏｎ　Ｐａｒｋ: 'Ｒｅｄｕｃｔｉｏｎ　ｏｆ　ｒｅｆｅｒｅｎｃｅ　ｐｉｃｔｕｒｅ　ｌｉｓｔ　ｃｈｅｃｋｉｎｇ　ｆｏｒ　ｔｅｍｐｏｒａｌ　ｍｏｔｉｏｎ　ｖｅｃｔｏｒ　ｐｒｅｄｉｃｔｉｏｎ' Ｊｏｉｎｔ　Ｃｏｌｌａｂｏｒａｔｉｖｅ　Ｔｅａｍ　ｏｎ　Ｖｉｄｅｏ　Ｃｏｄｉｎｇ　（ＪＣＴ-ＶＣ）　ｏｆ　ＩＴＵ-Ｔ　ＳＧ１６　ＷＰ３　ａｎｄ　ＩＳＯ／ＩＥＣ　ＪＴＣ１／ＳＣ２９／ＷＧ１１　６ｔｈ　Ｍ［ＪＣＴＶＣ-Ｆ５８７］, 20110722, ｐｐ．１-１０

Attorney, Agent or Firm:

Hirohito Katsunuma
Hidetoshi Tachibana

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