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- W2019060602 abstract "다중 참조 영상을 이용한 최적 부호화 모드를 선택하기 위해 율-왜곡 최적화 기법을 적용한 H.264/AVC 동영상 압축 표준은 기존의 동영상 압축 표준들보다 높은 부호화 효율을 얻었지만 계산 복잡도가 그만큼 증가하게 되었다. 따라서 이런 계산의 복잡도를 줄이기 위한 많은 빠른 모드 결정 방법들이 제안되었다. 그중에 I4MB의 방향성 정보를 이용한 고속 인트라 모드 결정 알고리즘을 제안하였다. 제안한 알고리즘은 JM11.0과 비교하여 무시할만하게 PSNR이 손실되고 비트율의 증가하지만 IPPP 영상들에서 전체 부호화 시간을 평균 15%와 모든 영상을 인트라로 처리한 영상들에서 부호화 시간을 평균 44% 감소시킬 수 있었다. H.264/AVC video coding standard adapting a rate-distortion optimization technique to select the best coding mode with multi reference frames for each macroblock gets a higher coding efficiency than those of previous video coding standards but the computational complexity increases drastically. Therefore, many fast mode decision algorithms are proposed to reduce the computational complexity. Among them, we propose a fast intra mode decision algorithm based on directional information of I4MB. The proposed algorithm achieves consistent time saving about 15% in IPPP sequences and 44% in all I frame sequences with negligible loss in PSNR and small increment of bit rate compared with that of JM11.0." @default.
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- W2019060602 date "2009-03-28" @default.
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- W2019060602 title "Fast Intra Mode Decision for H.264/AVC based on Directional Information" @default.
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- W2019060602 doi "https://doi.org/10.5392/jkca.2009.9.3.020" @default.
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