KR101407832B1 - 다수 참조 프레임을 사용하는 영상 코덱의 에러 리질리언스를 위한 참조 프레임 선택 기법 - Google Patents
다수 참조 프레임을 사용하는 영상 코덱의 에러 리질리언스를 위한 참조 프레임 선택 기법 Download PDFInfo
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Abstract
Description
도 2는 본 발명의 일 실시 예에 따른 다수 참조 프레임을 사용하는 영상 코덱의 에러 리질리언스를 위한 참조 프레임 선택 기법을 보인 흐름도
도 3은 본 발명의 일 실시 예에 따른 다수 참조 프레임을 사용하는 영상 코덱의 에러 리질리언스를 위한 참조 프레임 선택 기법에 의해서 움직임 벡터가 검색 및 결정되는 과정을 예시한 도면
Claims (5)
- (a) 부호화되기 위한 매크로블록의 참조 매크로블록을 검색하기 위해 다수의 참조 프레임 각각에서 움직임 예측(motion estimation)이 개별적으로 수행되는 단계;
(b) 상기 참조 프레임들로부터 개별 검색된 움직임 벡터(MV)들 각각의 가리키는 영역 및 부호화되는 해당 프레임의 인트라 코딩된 매크로블록(Intra-coded MB) 영역 간의 일치 정도를 나타내는 갱신률이 확인되는 단계;
(c) 상기 다수의 참조 프레임 각각에서 검색된 참조 매크로블록들 중 부호화되는 프레임의 상기 인트라 코디드 매크로블록(Intra-coded MB)과 상대적으로 가장 일치되는 참조 매크로블록의 움직임 벡터(MV: Motion Vector)가 선택되되, 상기 다수의 참조프레임으로부터 개별 검색된 움직임 벡터(MV) 모두의 상기 갱신률이 사전 설정된 최소값 이하인 경우 이전 부호화 시의 움직임 벡터 결정 모드를 통해 움직임 벡터(MV)가 결정되는 단계를 포함하는 다수 참조 프레임을 사용하는 영상 코덱의 에러 리질리언스를 위한 참조 프레임 선택 기법. - 제 1 항에 있어서,
상기 (b) 단계는, 상기 다수의 참조 프레임으로부터 개별 검색된 움직임 벡터(MV) 각각의 가리키는 위치가 저장되는 과정 및 각 움직임 벡터(MV)의 가리키는 영역과 상기 인트라 코딩된 매크로블록(Intra-coded MB) 영역의 위치가 비교되어 두 영역의 일치 정도가 계산되는 과정을 포함하는 것을 특징으로 하는 다수 참조 프레임을 사용하는 영상 코덱의 에러 리질리언스를 위한 참조 프레임 선택 기법. - 제 2 항에 있어서,
상기 다수의 참조 프레임으로부터 개별 검색된 움직임 벡터(MV) 각각의 가리키는 영역 및 상기 인트라 코딩된 매크로블록(Intra-coded MB) 영역 간에 일치 정도가 계산되는 과정은 매크로블록의 크기 및 화소 수를 기준으로 두 영역 간 일치 정도인 갱신률이 계산되는 과정인 것을 특징으로 하는 다수 참조 프레임을 사용하는 영상 코덱의 에러 리질리언스를 위한 참조 프레임 선택 기법. - 제 3 항에 있어서,
상기 (C) 단계는, 상기 다수의 참조 프레임으로부터 개별 검색된 움직임 벡터(MV)들이 함께 가지고 있는 갱신률이 비교되어 가장 높은 값의 갱신률을 갖는 움직임 벡터(MV)가 선택되는 과정을 포함하는 것을 특징으로 하는 다수 참조 프레임을 사용하는 영상 코덱의 에러 리질리언스를 위한 참조 프레임 선택 기법. - 삭제
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120144177A KR101407832B1 (ko) | 2012-12-12 | 2012-12-12 | 다수 참조 프레임을 사용하는 영상 코덱의 에러 리질리언스를 위한 참조 프레임 선택 기법 |
| US14/651,057 US9986262B2 (en) | 2012-12-12 | 2013-03-25 | Reference frame selection technique for error resilience of video codec using multiple reference frames |
| PCT/KR2013/002454 WO2014092249A1 (ko) | 2012-12-12 | 2013-03-25 | 다수 참조 프레임을 사용하는 영상 코덱의 에러 리질리언스를 위한 참조 프레임 선택 기법 |
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| KR1020120144177A KR101407832B1 (ko) | 2012-12-12 | 2012-12-12 | 다수 참조 프레임을 사용하는 영상 코덱의 에러 리질리언스를 위한 참조 프레임 선택 기법 |
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| Publication Number | Publication Date |
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| KR101407832B1 true KR101407832B1 (ko) | 2014-06-18 |
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| KR1020120144177A Expired - Fee Related KR101407832B1 (ko) | 2012-12-12 | 2012-12-12 | 다수 참조 프레임을 사용하는 영상 코덱의 에러 리질리언스를 위한 참조 프레임 선택 기법 |
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| Country | Link |
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| US (1) | US9986262B2 (ko) |
| KR (1) | KR101407832B1 (ko) |
| WO (1) | WO2014092249A1 (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101691748B1 (ko) | 2015-08-07 | 2017-01-02 | 조선대학교산학협력단 | 에러에 강인한 영상 전송을 위한 네트워크 인지 기반의 참조 프레임 제어 시스템 및 그 방법 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106303544B (zh) * | 2015-05-26 | 2019-06-11 | 华为技术有限公司 | 一种视频编解码方法、编码器和解码器 |
| US10567781B2 (en) * | 2018-05-01 | 2020-02-18 | Agora Lab, Inc. | Progressive I-slice reference for packet loss resilient video coding |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100878536B1 (ko) * | 2006-11-08 | 2009-01-13 | 삼성전자주식회사 | 영상 보간 방법 및 장치 |
| KR20090094595A (ko) * | 2008-03-03 | 2009-09-08 | 삼성전자주식회사 | 복수 참조에 의한 움직임 예측을 이용한 부호화 방법 및장치, 그리고 복수 참조에 의한 움직임 예측을 이용한복호화 방법 및 장치 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20060078289A (ko) * | 2004-12-31 | 2006-07-05 | 엠큐브웍스(주) | 동영상 데이터의 인코딩을 위한 다중 참조 프레임 운영 방법 |
| US7747921B2 (en) * | 2005-08-05 | 2010-06-29 | Sony Corporation | Systems and methods for transmitting data over lossy networks |
| KR100711204B1 (ko) * | 2006-06-26 | 2007-04-24 | 한국전자통신연구원 | 선택적 에러 은닉 장치 및 방법 |
| KR20110050283A (ko) * | 2009-11-06 | 2011-05-13 | 삼성전자주식회사 | 다중 참조 영상을 이용한 고속 움직임 추정 방법 |
| US9124757B2 (en) | 2010-10-04 | 2015-09-01 | Blue Jeans Networks, Inc. | Systems and methods for error resilient scheme for low latency H.264 video coding |
| WO2013030456A1 (en) * | 2011-08-30 | 2013-03-07 | Nokia Corporation | An apparatus, a method and a computer program for video coding and decoding |
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2012
- 2012-12-12 KR KR1020120144177A patent/KR101407832B1/ko not_active Expired - Fee Related
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2013
- 2013-03-25 US US14/651,057 patent/US9986262B2/en active Active
- 2013-03-25 WO PCT/KR2013/002454 patent/WO2014092249A1/ko not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100878536B1 (ko) * | 2006-11-08 | 2009-01-13 | 삼성전자주식회사 | 영상 보간 방법 및 장치 |
| KR20090094595A (ko) * | 2008-03-03 | 2009-09-08 | 삼성전자주식회사 | 복수 참조에 의한 움직임 예측을 이용한 부호화 방법 및장치, 그리고 복수 참조에 의한 움직임 예측을 이용한복호화 방법 및 장치 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101691748B1 (ko) | 2015-08-07 | 2017-01-02 | 조선대학교산학협력단 | 에러에 강인한 영상 전송을 위한 네트워크 인지 기반의 참조 프레임 제어 시스템 및 그 방법 |
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| Publication number | Publication date |
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| US20160080775A1 (en) | 2016-03-17 |
| US9986262B2 (en) | 2018-05-29 |
| WO2014092249A1 (ko) | 2014-06-19 |
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