KR20010043395A - 압축된 비디오 정보에서 브리딩 인공물을 감소시키기 위한방법 및 장치 - Google Patents
압축된 비디오 정보에서 브리딩 인공물을 감소시키기 위한방법 및 장치 Download PDFInfo
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Abstract
Description
Claims (10)
- GOP 정보 구조에 따라 배열된 압축된 이미지 시퀀스를 처리하기 위한 시스템에서 GOP 간의 시각적인 인공물을 감소시키기 위한 방법에 있어서,상기 GOP 정보 구조내의 제 1 타입의 정보 프레임에 대하여 개별적인 충실도 열화 레벨을 결정하는 단계(304);상기 GOP 정보 구조내의 제 2 타입의 정보 프레임에에 대하여 개별적인 충실도 열화 레벨을 결정하는 단계(304);상기 결정된 충실도 열화 레벨을 사용하여, 열화 균등화 파라미터를 계산하는 단계(306); 및상기 계산된 열화 균등화 파라미터를 사용하여, 상기 제 1 및 제 2 타입의 정보 프레임이 미리결정된 범위 내의 충실도 열화 레벨을 가지도록 상기 제 1 및 제 2 타입의 정보 프레임 중 하나를 처리하는 단계(308)를 포함하는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 제 1 타입의 정보 프레임은 인트라-코딩된 정보 프레임(I-프레임) 및 순방향 예상된 정보 프레임(P-프레임) 중 하나를 포함하며, 상기 제 2 타입의 정보 프레임은 예상 코딩된 정보 프레임(P-프레임 또는 B-프레임)을 포함하는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 충실도 열화의 레벨은 양자화 레벨과 관련하여 결정되는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 제 1 타입의 정보 프레임은 상기 제 2 타입의 정보 프레임 보다 높은 충실도 레벨을 가지며, 상기 처리 단계(308)는,제 2 타입의 정보 프레임과 관련된 양자화 잡음 파라미터(QB)를 규정하는 단계(408);상기 열화 균등화 파라미터에 따라 상기 규정된 양자화 잡음 파라미터를 스케일링하는 단계(410); 및상기 제 1정보 프레임에 상기 스케일링된 양자화 잡음 파라미터에 근접하는 양자화 잡음을 주입하는 단계 (412)를 포함하는 것을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 GOP 정보 구조내의 제 3 타입의 정보 프레임에 대하여 개별적인 충실도 열화 레벨을 결정하는 단계; 및상기 계산된 열화 균등화 파라미터를 사용하여, 상기 제 1, 제 2 및 제 3 타입의 정보 프레임이 미리결정된 범위 내의 충실도 열화 레벨을 가지도록 상기 3 타입의 정보 프레임을 처리하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- GOP 정보 구조에 따라 배열된 압축된 비디오 정보 프레임의 시퀀스를 디코딩하기 위한 시스템에서 시각적인 인공물을 감소시키기 위한 방법에 있어서,상기 GOP내의 상기 다수의 압축된 비디오 정보 프레임의 상대적인 충실도 열화 레벨을 결정하는 단계(304);상기 결정된 상대적인 충실도 열화 레벨을 사용하여, 충실도 열화 균등화 파라미터를 계산하는 단계(306); 및상기 상대적인 충실도 열화 레벨이 임계 레벨까지 감소되도록, 상기 계산된 충실도 열화 균등화 파라미터를 상기 GOP 내의 하나 이상의 압축된 비디오 정보 프레임에 적용하는 단계(308)를 포함하는 것을 특징으로 하는 방법.
- 제 6 항에 있어서, 상기 상대적인 충실도 열화 레벨은 하나의 양자화 레벨, GOP 내의 압축된 비디오 정보 프레임 타입, 상기 GOP 내의 상기 압축된 비디오정보프레임의 상대적 위치, 상기 GOP내의 상기 압축된 비디오 정보 프레임의 스펙트럼 정보 분포 및 상기 GOP 내의 상기 압축된 비디오 정보 프레임의 선명도 레벨과 관련하여 결정되는 것을 특징으로 하는 방법.
- 제 6 항에 있어서, 스펙트럼 정보 분포를 예상된 스펙트럼 분포와 비교하는 단계(608);스펙트럼 분포 균등화 파라미터를 계산하는 단계(622); 및상기 스펙트럼 정보 분포와 상기 예상된 스펙트럼 분포가 임계 레벨 이내에 존재하도록, 상기 스펙트럼 분포 균등화 파라미터를 상기 GOP에 적용하는 단계(624)를 더 포함하는 것을 특징으로 하는 방법.
- GOP 정보 구조에 따라 배열된 압축된 비디오 정보 프레임 시퀀스를 디코딩하기 위한 시스템에 있어서,제어 신호(C)에 응답하여, 비디오 정보 프레임(VI)을 처리하기 위한 비디오 프로세서(220); 및상기 비디오 정보 프레임의 충실도의 표시에 응답하여 상기 제어 신호를 생성하기 위한 제어기(230)를 포함하며;상기 제어기는 GOP 내의 상기 다수의 압축된 비디오 정보 프레임의 상대적인 충실도 열화 레벨을 결정하고(304), 상기 결정된 상대적인 충실도 열화 레벨을 사용하여 충실도 열화 균등화 파라미터를 계산하며(306);상기 비디오 프로세서는 상기 상대적 충실도인 열화 레벨이 임계 레벨까지 감소되도록, 상기 GOP내의 하나 이상의 비디오 정보 프레임에 상기 계산된 충실도 열화 균등화 파라미터를 적용하는(308) 것을 특징으로 하는 시스템.
- 제 9 항에 있어서, 상기 비디오 프로세서는, 상대적으로 높은 충실도의 비디오 정보 프레임에 양자화 잡음을 주입함으로써, 상대적으로 높은 충실도 비디오 정보 프레임의 충실도 레벨을 감소시키는 것을 특징으로 하는 시스템.
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Application Number | Priority Date | Filing Date | Title |
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US8463298P | 1998-05-07 | 1998-05-07 | |
US09/127,451 US6125147A (en) | 1998-05-07 | 1998-07-31 | Method and apparatus for reducing breathing artifacts in compressed video |
US09/127,451 | 1998-07-31 | ||
US60/084,632 | 1999-04-06 |
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KR20010043395A true KR20010043395A (ko) | 2001-05-25 |
KR100545145B1 KR100545145B1 (ko) | 2006-01-24 |
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US (1) | US6125147A (ko) |
EP (1) | EP1076885B1 (ko) |
JP (1) | JP4334768B2 (ko) |
KR (1) | KR100545145B1 (ko) |
CN (1) | CN1301370A (ko) |
BR (1) | BR9910272A (ko) |
DE (1) | DE69915277T2 (ko) |
WO (1) | WO1999057685A1 (ko) |
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JP3406255B2 (ja) * | 1999-09-29 | 2003-05-12 | 松下電器産業株式会社 | 画像復号装置および方法 |
US7512109B2 (en) * | 2000-09-29 | 2009-03-31 | Intel Corporation | Slot structure for radio communications system |
US6914939B1 (en) * | 2000-11-13 | 2005-07-05 | International Business Machines Corporation | Method and apparatus for producing pseudo-constant bits per picture video bit-streams for low-delay compression system |
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US6125147A (en) | 2000-09-26 |
JP2002514023A (ja) | 2002-05-14 |
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WO1999057685A1 (en) | 1999-11-11 |
EP1076885A1 (en) | 2001-02-21 |
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