WO2010044569A3 - 참조 프레임 생성 방법 및 장치와 그를 이용한 영상 부호화/복호화 방법 및 장치 - Google Patents

참조 프레임 생성 방법 및 장치와 그를 이용한 영상 부호화/복호화 방법 및 장치 Download PDF

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WO2010044569A3
WO2010044569A3 PCT/KR2009/005779 KR2009005779W WO2010044569A3 WO 2010044569 A3 WO2010044569 A3 WO 2010044569A3 KR 2009005779 W KR2009005779 W KR 2009005779W WO 2010044569 A3 WO2010044569 A3 WO 2010044569A3
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reference frame
offset
present
generating
block mode
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PCT/KR2009/005779
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WO2010044569A2 (ko
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김하윤
이영렬
문주희
김해광
전병우
김대연
한동훈
김기오
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에스케이텔레콤 주식회사
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Priority to US13/124,635 priority Critical patent/US9686549B2/en
Publication of WO2010044569A2 publication Critical patent/WO2010044569A2/ko
Publication of WO2010044569A3 publication Critical patent/WO2010044569A3/ko
Priority to US14/821,788 priority patent/US9736475B2/en

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    • H04N19/186—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
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    • H04N19/625—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]

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Abstract

본 발명은 참조 프레임 생성 방법 및 장치와 그를 이용한 영상 부호화/복호화 방법 및 장치에 관한 것이다. 본 발명은 참조 프레임을 생성하는 장치에 있어서, 참조 프레임을 분수 화소 단위로 보간하는 보간부; 보간된 참조 프레임을 이용하여 현재 프레임의 블록 모드와 블록 모드에 따른 움직임 벡터를 결정하는 가상 부호화부; 블록 모드와 움직임 벡터를 이용하여 보간된 참조 프레임의 각 화소에 대한 오프셋을 산출하는 오프셋 산출부; 및 각 화소에 대한 오프셋을 보간된 참조 프레임의 각 화소에 가산하여 오프셋 보간 참조 프레임을 생성하는 오프셋 가산부를 포함하는 것을 특징으로 하는 참조 프레임 생성 장치를 제공한다. 본 발명에 의하면, 인터 예측을 위한 참조 프레임에 블록 모드에 따라 산출되는 오프셋을 가산하여 움직임 추정 및 보상에 이용되는 참조 프레임을 부호화될 현재 프레임과 유사해지도록 함으로써, 더욱 정확한 예측을 할 수 있고 그에 따라 부호화 효율 및 압축 효율을 향상시킬 수 있다.
PCT/KR2009/005779 2008-10-16 2009-10-09 참조 프레임 생성 방법 및 장치와 그를 이용한 영상 부호화/복호화 방법 및 장치 WO2010044569A2 (ko)

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US13/124,635 US9686549B2 (en) 2008-10-16 2009-10-09 Method and apparatus for generating a reference frame and method and apparatus for encoding/decoding image using the same
US14/821,788 US9736475B2 (en) 2008-10-16 2015-08-10 Method and apparatus for generating a reference frame and method and apparatus for encoding/decoding image using the same

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KR1020080101742A KR101441903B1 (ko) 2008-10-16 2008-10-16 참조 프레임 생성 방법 및 장치와 그를 이용한 영상 부호화/복호화 방법 및 장치
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CN105812800A (zh) * 2010-10-06 2016-07-27 Sk电信有限公司 使用高精度滤波器编码/解码视频的方法和设备
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