KR101267178B1 - 비디오에 대하여 색 인핸스먼트 계층을 인코딩 및 디코딩하기 위한 방법 및 디바이스 - Google Patents
비디오에 대하여 색 인핸스먼트 계층을 인코딩 및 디코딩하기 위한 방법 및 디바이스 Download PDFInfo
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Abstract
Description
Claims (10)
- 비디오 영상의 제1 색 계층(INi)을 인코딩하기 위한 방법으로서 - 상기 제1 색 계층은 주어진 색의 픽셀들을 포함하고, 상기 픽셀들 각각은 제1 깊이(N)의 색 값을 가짐 -,상기 비디오 영상의 제2 색 계층(IMi)을 생성 또는 수신하는 단계 - 상기 제2 색 계층은 상기 주어진 색의 픽셀들을 포함하고, 상기 픽셀들 각각은 상기 제1 깊이(N)보다 작은 제2 깊이(M)의 색 값을 가짐 -;상기 제1 색 계층을 제1 블록들(BNi,l)로 분할하고 그리고 상기 제2 색 계층을 제2 블록들(BMi,l)로 분할하는 단계 - 상기 제1 블록들은 상기 제2 블록들과 동일한 수의 픽셀들을 갖고, 자신들의 각각의 영상(IMi, INi) 내에서 동일한 위치를 가짐 -;상기 제1 색 계층(INi)의 제1 블록(BNi,l)에 대하여 상기 제2 색 계층(IMi)의 대응하는 제2 블록(BMi,l)을 결정하는 단계;상기 제2 블록(BMi,l)의 픽셀들의 값들을 선형 변환 함수(LPA)를 이용하여 제3 블록(BNp i,l)의 픽셀들의 값들로 변환하는 단계 - 상기 선형 변환 함수는 상기 제1 블록(BNi,l)과 예측된 제3 블록(BNp i,l) 간의 차를 최소화함 -;상기 예측된 제3 블록(BNp i,l)과 상기 제1 블록(BNi,l) 간의 차를 계산하는 단계; 및상기 제2 블록(BMi,l), 상기 선형 변환 함수(LPA)의 계수들(Coefi(l)) 및 상기 차를 인코딩하는 단계를 포함하는 인코딩 방법.
- 제1항에 있어서,블록의 모든 픽셀들은 동일한 변환을 이용하고, 상기 변환은 제1 블록(BNi,l) 및 그 대응하는 제2 블록(BMi,l)의 각 쌍에 대하여 개별적인 인코딩 방법.
- 제1항에 있어서,상기 제1 블록(BNi,l)에서의 위치 (u,v)에 있는 픽셀은,BNi,l(u,v) = (BMi,l(u,v))n cn + (BMi,l(u,v))n-1 cn-1 + ...+(BMi,l(u,v))1/m c1/m + c0에 따라 상기 제2 블록(BMi,l)에서의 동일한 위치에 있는 대응 픽셀로부터 얻고,상기 계수들(Coefi(l))은 cn, cn-1,..., c0인 인코딩 방법.
- 제1항에 있어서,상기 선형 변환 함수(LPA)는 최소 제곱법(least square fit method)에 의해 결정되는 인코딩 방법.
- 제1항에 있어서,상기 계수들(Coefi(l))을 메타데이터로서 포맷하는 단계와,상기 인코딩된 제2 블록(BMi,l)에 첨부된 상기 메타데이터 및 상기 차를 전송하는 단계를 더 포함하는 인코딩 방법.
- 제5항에 있어서,상기 메타데이터는 인터-프레임 코딩되는 인코딩 방법.
- 비디오 영상의 제1 색 계층(INi)을 디코딩하기 위한 방법으로서 - 상기 제1 색 계층은 주어진 색의 픽셀들을 포함하고, 상기 픽셀들 각각은 제1 깊이(N)의 색 값을 가짐 -,상기 비디오 영상의 제2 색 계층(IMi)을 디코딩하는 단계 - 상기 제2 색 계층은 상기 주어진 색의 픽셀들을 포함하고, 상기 픽셀들 각각은 상기 제1 깊이(N)보다 작은 제2 깊이(M)의 색 값을 가짐 -;선형 변환 함수(LPA)의 계수들(Coefi(l))을 디코딩하는 단계;나머지 블록 또는 영상(residual block or image)을 획득하기 위해 상기 제1 색 계층의 인코딩된 데이터를 디코딩하는 단계;상기 디코딩된 계수들(Coefi(l))을 갖는 상기 변환 함수(LPA)를 상기 비디오 영상의 디코딩된 제2 색 계층(IMi)에 적용하는 단계 - 상기 비디오 영상의 예측된 제1 색 계층(IN'i)이 얻어짐 -; 및상기 비디오 영상의 예측된 제1 색 계층(IN'i)을 상기 나머지 블록 또는 영상(INRES i,l)으로 업데이트하는 단계를 포함하는 디코딩 방법.
- 제7항에 있어서,상기 나머지 블록 또는 영상을 획득하기 위해 상기 제1 색 계층의 인코딩된 데이터를 디코딩하는 단계는 인터-프레임 디코딩을 포함하는 디코딩 방법.
- 비디오 영상의 제1 색 계층(INi)을 인코딩하기 위한 디바이스로서 - 상기 제1 색 계층은 주어진 색의 픽셀들을 포함하고, 상기 픽셀들 각각은 제1 깊이(N)의 색 값을 가짐 -,상기 비디오 영상의 제2 색 계층(IMi)을 생성 또는 수신하기 위한 수단 - 상기 제2 색 계층은 상기 주어진 색의 픽셀들을 포함하고, 상기 픽셀들 각각은 상기 제1 깊이(N)보다 작은 제2 깊이(M)의 색 값을 가짐 -;상기 제1 색 계층을 제1 블록들(BNi,l)로 분할하고 그리고 상기 제2 색 계층을 제2 블록들(BMi,l)로 분할하기 위한 수단 - 상기 제1 블록들은 상기 제2 블록들과 동일한 수의 픽셀들을 갖고, 자신들의 각각의 영상(IMi, INi) 내에서 동일한 위치를 가짐 -;상기 제1 색 계층(INi)의 제1 블록(BNi,l)에 대하여 상기 제2 색 계층(IMi)의 대응하는 제2 블록(BMi,l)을 결정하기 위한 수단과,상기 제2 블록(BMi,l)의 픽셀들의 값들을 선형 변환 함수(LPA)를 이용하여 제3 블록(BNp i,l)의 픽셀들의 값들로 변환하기 위한 수단 - 상기 선형 변환 함수는 상기 제1 블록(BNi,l)과 예측된 제3 블록(BNp i,l) 간의 차를 최소화함 -;상기 예측된 제3 블록(BNp i,l)과 상기 제1 블록(BNi,l) 간의 차를 계산하기 위한 수단; 및상기 제2 블록(BMi,l), 상기 선형 변환 함수(LPA)의 계수들(Coefi(l)) 및 상기 차를 인코딩하기 위한 수단을 포함하는 인코딩 디바이스.
- 비디오 영상의 제1 색 계층(INi)을 디코딩하기 위한 디바이스로서 - 상기 제1 색 계층은 주어진 색의 픽셀들을 포함하고, 상기 픽셀들 각각은 제1 깊이(N)의 색 값을 가짐 -,상기 비디오 영상의 제2 색 계층(IMi)을 디코딩하기 위한 수단 - 상기 제2 색 계층은 상기 주어진 색의 픽셀들을 포함하고, 상기 픽셀들 각각은 상기 제1 깊이(N)보다 작은 제2 깊이(M)의 색 값을 가짐 -;선형 변환 함수(LPA)의 계수들(Coefi(l))을 디코딩하기 위한 수단;나머지 블록 또는 영상을 획득하기 위해 상기 제1 색 계층의 인코딩된 데이터를 디코딩하기 위한 수단;상기 디코딩된 계수들(Coefi(l))을 갖는 상기 변환 함수(LPA)를 상기 비디오 영상의 디코딩된 제2 색 계층(IMi)에 적용하기 위한 수단 - 상기 비디오 영상의 예측된 제1 색 계층(IN'i)이 얻어짐 -; 및상기 비디오 영상의 예측된 제1 색 계층(IN'i)을 상기 나머지 블록 또는 영상(INRES i,l)으로 업데이트하기 위한 수단을 포함하는 디코딩 디바이스.
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US8902971B2 (en) | 2004-07-30 | 2014-12-02 | Euclid Discoveries, Llc | Video compression repository and model reuse |
EP3484154B1 (en) | 2006-10-25 | 2025-05-14 | GE Video Compression, LLC | Quality scalable coding |
WO2008085150A1 (en) | 2006-12-21 | 2008-07-17 | Thomson Licensing | Method, apparatus and system for providing color grading for displays |
US20100091840A1 (en) * | 2007-01-10 | 2010-04-15 | Thomson Licensing Corporation | Video encoding method and video decoding method for enabling bit depth scalability |
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JP2010526455A (ja) | 2007-01-23 | 2010-07-29 | ユークリッド・ディスカバリーズ・エルエルシー | 画像データを処理するコンピュータ方法および装置 |
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