Design of a Deblocking Filter for Both Objective and Subjective Metrics
Summary :
Blocking artifact is a major limitation of DCT-based codec at low bit rates. This degradation is likely to influence the judgment of a final user. This work presents a powerful post-processing filter in the DCT frequency domain. The proposed algorithm adopts a shift block within four adjacent DCT blocks to reduce computational complexity. The artifacts resulting from quantized and de-quantized process are eliminated by slightly modifying several DCT coefficients in the shift block. Simulation results indicate that the proposed method produces the best image quality in terms of both objective and subjective metrics.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E91-A No.8 pp.2038-2040
- Publication Date
- 2008/08/01
- Publicized
- Online ISSN
- 1745-1337
- DOI
- 10.1093/ietfec/e91-a.8.2038
- Type of Manuscript
- Special Section LETTER (Special Section on Signal Processing)
- Category
Authors
Keyword
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Ying-Wen CHANG, Yen-Yu CHEN, "Design of a Deblocking Filter for Both Objective and Subjective Metrics" in IEICE TRANSACTIONS on Fundamentals,
vol. E91-A, no. 8, pp. 2038-2040, August 2008, doi: 10.1093/ietfec/e91-a.8.2038.
Abstract: Blocking artifact is a major limitation of DCT-based codec at low bit rates. This degradation is likely to influence the judgment of a final user. This work presents a powerful post-processing filter in the DCT frequency domain. The proposed algorithm adopts a shift block within four adjacent DCT blocks to reduce computational complexity. The artifacts resulting from quantized and de-quantized process are eliminated by slightly modifying several DCT coefficients in the shift block. Simulation results indicate that the proposed method produces the best image quality in terms of both objective and subjective metrics.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e91-a.8.2038/_p
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@ARTICLE{e91-a_8_2038,
author={Ying-Wen CHANG, Yen-Yu CHEN, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Design of a Deblocking Filter for Both Objective and Subjective Metrics},
year={2008},
volume={E91-A},
number={8},
pages={2038-2040},
abstract={Blocking artifact is a major limitation of DCT-based codec at low bit rates. This degradation is likely to influence the judgment of a final user. This work presents a powerful post-processing filter in the DCT frequency domain. The proposed algorithm adopts a shift block within four adjacent DCT blocks to reduce computational complexity. The artifacts resulting from quantized and de-quantized process are eliminated by slightly modifying several DCT coefficients in the shift block. Simulation results indicate that the proposed method produces the best image quality in terms of both objective and subjective metrics.},
keywords={},
doi={10.1093/ietfec/e91-a.8.2038},
ISSN={1745-1337},
month={August},}
Copy
TY - JOUR
TI - Design of a Deblocking Filter for Both Objective and Subjective Metrics
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2038
EP - 2040
AU - Ying-Wen CHANG
AU - Yen-Yu CHEN
PY - 2008
DO - 10.1093/ietfec/e91-a.8.2038
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E91-A
IS - 8
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - August 2008
AB - Blocking artifact is a major limitation of DCT-based codec at low bit rates. This degradation is likely to influence the judgment of a final user. This work presents a powerful post-processing filter in the DCT frequency domain. The proposed algorithm adopts a shift block within four adjacent DCT blocks to reduce computational complexity. The artifacts resulting from quantized and de-quantized process are eliminated by slightly modifying several DCT coefficients in the shift block. Simulation results indicate that the proposed method produces the best image quality in terms of both objective and subjective metrics.
ER -
English
