KR20230004446A - 비디오 코딩에서의 크로마 양자화 - Google Patents
비디오 코딩에서의 크로마 양자화 Download PDFInfo
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Abstract
Description
도 1은 그 자신 세트의 크로마 QP 오프셋 사양들을 각각 가진 크로마 양자화 그룹들을 포함한, 계층에 따른 비디오 코딩 구조체(100)를 예시한다.
도 2a 내지 2c는 크로마 양자화 그룹에 대한 한 세트의 크로마 QP 오프셋 값들을 인코딩하는 여러 개의 방법들을 예시한다.
도 3은 크로마 양자화 그룹의 정의를 명시하는 예시의 픽처 헤더 또는 픽처 파라미터 세트(PPS)를 예시한다.
도 4는 크로마 양자화 그룹에 있을 수 있는 예시의 코딩 트리 단위를 예시한다.
도 5는 양자화 그룹 내의 추가 크로마 QP 오프셋들의 사양을 예시한다.
도 6은 2 개의 크로마 성분들에 대한 크로마 QP 오프셋 값들을 명시하는 서로 다른 방법을 사용하여 양자화 그룹 내의 추가 크로마 QP 오프셋들의 사양을 예시한다.
도 7은 추가 크로마 QP 오프셋 사양들을 허용하는 비디오 비트스트림으로부터 크로마 QP 값들을 결정하는 프로세스를 개념적으로 예시한다.
도 8은 보다 높은 레벨 헤더에 있는 가능한 크로마 QP 오프셋 값들의 테이블을 포함한, 계층에 따른 비디오 코딩 구조체를 예시한다.
도 9는 크로마 QP 오프셋들의 테이블을 인코딩하는 예시의 픽처 헤더 또는 픽처 파라미터 세트(PPS)를 예시한다.
도 10은 크로마 QP 오프셋 테이블의 엔트리 각각을 예측적으로 인코딩하는 픽처 헤더를 예시한다.
도 11은 픽처 헤더 내의 테이블로부터 크로마 QP 오프셋 값들을 회수하기 위한 인덱스를 사용하는 양자화 그룹에 있을 수 있는 예시의 코딩 트리 단위를 예시한다.
도 12는 크로마 QP 오프셋 값들의 테이블 내의 엔트리를 선택하기 위한 인덱스를 사용하는 양자화 그룹을 예시한다.
도 13은 추가 크로마 QP 오프셋 사양들을 구현하기 위해 가능한 크로마 QP 오프셋 값들의 테이블을 사용하는 비디오 비트스트림으로부터 크로마 QP 값들을 결정하는 프로세스를 개념적으로 예시한다.
도 14는 추가 크로마 QP 오프셋 값들을 명시하는 방법에 대한 선택을 포함한 픽처 헤더에 대한 의사 코드(pseudo code)를 예시한다.
도 15는 3 개의 서로 다른 방법들 중 어느 것을 사용하여 양자화 그룹에 대한 크로마 QP 오프셋 값들을 명시할 수 있는 변환 단위에 대한 의사 코드의 구현예를 예시한다.
도 16은 이미지의 예시의 분할 및 카테고리화를 예시한다.
도 17은 이미지의 서로 다른 영역들을 분석하고 이에 따라서 크로마 QP 오프셋들을 할당하는 프로세스(1700)를 개념적으로 예시한다.
도 18은 일반적인 비디오 인코더를 예시한다.
도 19는 일반적인 비디오 디코더를 예시한다.
도 20은 본 발명의 몇몇 실시예들이 구현되는 전자 시스템을 개념적으로 예시한다.
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PCT/US2014/054152 WO2015035092A2 (en) | 2013-09-09 | 2014-09-04 | Chroma quantization in video coding |
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