The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
JPEG2000에서는 CDF(Cohen-Daubechies-Feauveau) 9/7 탭 웨이블릿 필터가 기존 리프팅 방식을 사용하여 구현되었습니다. 그러나 필터 계수는 여전히 복잡하며 기존 리프팅 방식은 코딩 프로세스에서 이미지 가장자리를 무시합니다. 이러한 문제를 해결하기 위해 우리는 두 단계의 리프팅 방식을 제안합니다. 첫 번째 단계에서는 적절한 필터 계수를 선택합니다. 두 번째 단계에서는 중앙값 연산자를 사용하여 이미지 가장자리를 고려합니다. 실험 결과, CDF 0.75/9-tap 웨이블릿에서 제안한 리프팅 방식의 PSNR(Peak Signal-to-Noise Ratio) 값이 기존 리프팅 방식에 비해 평균 최대 7dB까지 크게 향상되었음을 확인했습니다. JPEG2000의 필터.
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Do QUAN, Yo-Sung HO, "Optimized Median Lifting Scheme for Lossy Image Compression" in IEICE TRANSACTIONS on Information,
vol. E94-D, no. 3, pp. 721-724, March 2011, doi: 10.1587/transinf.E94.D.721.
Abstract: In JPEG2000, the Cohen-Daubechies-Feauveau (CDF) 9/7-tap wavelet filter was implemented by using the conventional lifting scheme. However, the filter coefficients remain complex, and the conventional lifting scheme disregards image edges in the coding process. In order to solve these issues, we propose a lifting scheme in two steps. In the first step, we select the appropriate filter coefficients; in the second step, we employ a median operator to regard image edges. Experimental results show that the peak signal-to-noise ratio (PSNR) value of the proposed lifting scheme is significantly improved, by up to 0.75 dB on average, compared to that of the conventional lifting scheme in the CDF 9/7-tap wavelet filter of JPEG2000.
URL: https://global.ieice.org/en_transactions/information/10.1587/transinf.E94.D.721/_p
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@ARTICLE{e94-d_3_721,
author={Do QUAN, Yo-Sung HO, },
journal={IEICE TRANSACTIONS on Information},
title={Optimized Median Lifting Scheme for Lossy Image Compression},
year={2011},
volume={E94-D},
number={3},
pages={721-724},
abstract={In JPEG2000, the Cohen-Daubechies-Feauveau (CDF) 9/7-tap wavelet filter was implemented by using the conventional lifting scheme. However, the filter coefficients remain complex, and the conventional lifting scheme disregards image edges in the coding process. In order to solve these issues, we propose a lifting scheme in two steps. In the first step, we select the appropriate filter coefficients; in the second step, we employ a median operator to regard image edges. Experimental results show that the peak signal-to-noise ratio (PSNR) value of the proposed lifting scheme is significantly improved, by up to 0.75 dB on average, compared to that of the conventional lifting scheme in the CDF 9/7-tap wavelet filter of JPEG2000.},
keywords={},
doi={10.1587/transinf.E94.D.721},
ISSN={1745-1361},
month={March},}
부
TY - JOUR
TI - Optimized Median Lifting Scheme for Lossy Image Compression
T2 - IEICE TRANSACTIONS on Information
SP - 721
EP - 724
AU - Do QUAN
AU - Yo-Sung HO
PY - 2011
DO - 10.1587/transinf.E94.D.721
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E94-D
IS - 3
JA - IEICE TRANSACTIONS on Information
Y1 - March 2011
AB - In JPEG2000, the Cohen-Daubechies-Feauveau (CDF) 9/7-tap wavelet filter was implemented by using the conventional lifting scheme. However, the filter coefficients remain complex, and the conventional lifting scheme disregards image edges in the coding process. In order to solve these issues, we propose a lifting scheme in two steps. In the first step, we select the appropriate filter coefficients; in the second step, we employ a median operator to regard image edges. Experimental results show that the peak signal-to-noise ratio (PSNR) value of the proposed lifting scheme is significantly improved, by up to 0.75 dB on average, compared to that of the conventional lifting scheme in the CDF 9/7-tap wavelet filter of JPEG2000.
ER -