KR20160025035A - 이미지 부호화 방법, 이미지 복호화 방법, 이미지 부호화 장치 및 이미지 복호화 장치 - Google Patents
이미지 부호화 방법, 이미지 복호화 방법, 이미지 부호화 장치 및 이미지 복호화 장치 Download PDFInfo
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Abstract
Description
도 2는 색상 포맷 정보의 일례를 나타내는 도면이다.
도 3은 4:2:0 포맷의 색차 신호를 갖는 움직임 벡터의 도면이다.
도 4는 4:2:0 포맷의 휘도 신호를 갖는 움직임 벡터의 도면이다.
도 5는 4:2:2 포맷의 색차 신호를 갖는 움직임 벡터의 도면이다.
도 6은 4:2:2 포맷의 휘도 신호를 갖는 움직임 벡터의 도면이다.
도 7은 4:2:0 포맷으로 액세스되는 화소의 예를 나타내는 도면이다.
도 8은 4:2:0 포맷으로 액세스되는 화소의 예를 나타내는 도면이다.
도 9는 4:2:2 포맷으로 액세스되는 화소의 예를 나타내는 도면이다.
도 10은 이미지 부호화 장치에 대응하는 이미지 복호화 장치를 나타내는 블록도이다.
도 11은 예측 이미지 생성부를 나타내는 블록도이다.
도 12는 본 실시예에 따른 제어의 흐름도이다.
도 13은 메모리 대역폭을 줄이는 처리의 흐름도이다.
도 14는 메모리 대역폭을 줄이는 처리의 흐름도이다.
도 15는 메모리 대역폭을 줄이는 처리의 흐름도이다.
도 16은 본 실시예에 따른 장치의 하드웨어 구성을 나타내는 도면이다.
101 입력 비디오 신호
102 감산부
103 변환/양자화부
104 역양자화/역변환부
105 엔트로피 부호화부
106 가산부
107 복호 이미지 신호
108 프레임 메모리
109 참조 이미지 신호
110 예측 이미지 생성부
111 예측 이미지 신호
112 예측 제어부
113 부호화 제어부
114 색상 포맷 정보
115 블록 크기 제한 정보
116 움직임 벡터 탐색부
117 움직임 벡터 정보
118 예측 제어 정보
119 프로파일/레벨 정보
120 부호화 데이터
300 이미지 복호화 장치
301 부호화 데이터
302 엔트로피 복호화부
303 역양자화/역변환부
304 가산부
305 복호 이미지 신호
306 프레임 메모리
307 재생 비디오 신호
308 참조 이미지 신호
310 예측 이미지 신호
311 예측 제어 정보
312 벡터 정보
313 프로파일/레벨 정보
Claims (2)
- 휘도 성분 및 색차 성분을 포함하는 타겟 이미지를 복호화하는 이미지 복호화 방법에 있어서,
변환 계수를 획득하는 단계;
제1 참조 이미지 목록 및 제2 참조 이미지 목록을 획득하는 단계;
명시적으로(explicitly) 또는 암시적으로(implicitly) 지정되는 예측 모드에 기초하여 제1 예측 또는 제2 예측을 선택하는 단계로서, 상기 제1 예측은 상기 제1 참조 이미지 목록 및 상기 제2 참조 이미지 목록 모두를 이용하고, 상기 제2 예측은 상기 제1 참조 이미지 목록과 상기 제2 참조 이미지 목록 중 하나만을 이용하는 것인, 상기 제1 예측 또는 제2 예측을 선택하는 단계;
예측 블록의 크기가 제1 값과 동일하고, 또한 상기 제1 예측이 선택되면, 상기 제1 예측을 상기 제2 예측으로 변경하는 단계;
상기 제1 예측 또는 상기 제2 예측을 이용함으로써 상기 예측 블록의 예측 이미지를 생성하는 단계; 및
상기 변환 계수로부터 계산된 예측 오차와 상기 예측 이미지를 합산함으로써 복호화 이미지를 생성하는 단계
를 포함하는, 이미지 복호화 방법. - 휘도 성분 및 색차 성분을 포함하는 타겟 이미지를 복호화하는 이미지 복호화 장치에 있어서,
변환 계수를 획득하도록 구성된 복호화부;
제1 참조 이미지 목록 및 제2 참조 이미지 목록을 획득하고, 제1 예측 또는 제2 예측을 이용함으로써 예측 블록의 예측 이미지를 생성하도록 구성된 제1 생성부; 및
상기 변환 계수로부터 계산된 예측 오차와 상기 예측 이미지를 합산함으로써 복호화 이미지를 생성하도록 구성된 제2 생성부
를 포함하고,
상기 제1 생성부는,
명시적으로 또는 암시적으로 지정되는 예측 모드에 기초하여 제1 예측 또는 제2 예측을 선택하며 - 상기 제1 예측은 상기 제1 참조 이미지 목록 및 상기 제2 참조 이미지 목록 모두를 이용하고, 상기 제2 예측은 상기 제1 참조 이미지 목록과 상기 제2 참조 이미지 목록 중 하나만을 이용함 -,
상기 예측 블록의 크기가 제1 값과 동일하고, 또한 상기 제1 예측이 선택되면, 상기 제1 예측을 상기 제2 예측으로 변경하는 것인, 이미지 복호화 장치.
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| PCT/JP2011/075725 WO2013069095A1 (ja) | 2011-11-08 | 2011-11-08 | 画像符号化方法、画像復号方法、画像符号化装置および画像復号装置 |
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| CN103081470B (zh) | 2010-09-02 | 2016-08-03 | Lg电子株式会社 | 编码和解码视频的方法和使用该方法的装置 |
| ES2773691T3 (es) | 2011-09-14 | 2020-07-14 | Samsung Electronics Co Ltd | Procedimiento y dispositivo de codificación de una unidad de predicción (PU) según su tamaño y dispositivo de decodificación correspondiente |
| BR122020011587B1 (pt) * | 2011-11-08 | 2022-05-03 | Kabushiki Kaisha Toshiba | Método de decodificação realizado pelo menos parcialmente por um circuito eletrônico e método de codificação realizado pelo menos parcialmente por um circuito eletrônico |
| CN104041034B (zh) * | 2012-01-19 | 2018-10-16 | 索尼公司 | 图像处理设备和方法 |
| GB2501535A (en) * | 2012-04-26 | 2013-10-30 | Sony Corp | Chrominance Processing in High Efficiency Video Codecs |
| WO2015163146A1 (ja) * | 2014-04-22 | 2015-10-29 | ソニー株式会社 | 符号化装置および符号化方法 |
| CN107710762A (zh) * | 2015-06-19 | 2018-02-16 | 诺基亚技术有限公司 | 用于视频编码和解码的装置、方法、以及计算机程序 |
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