| An adaptive fuzzy filter for coding artifacts removal in video and image |
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| 作者姓名： | WU Jing YE Xiu-qing GU Wei-kang |
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| 作者单位： | Department of Information and Communication Engineering, Zhejiang University, Hangzhou 310027, China |
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| 摘 要： | This paper proposes a new adaptive post-filtering algorithm to remove coding artifacts in block-based video coder. The proposed method concentrates on blocking and ringing artifacts removal. For de-blocking, the blocking strength is identified to determine the filtering range, and the maximum quantization parameter of the image is used to adapt the 1D fuzzy filter. For de-ringing, besides the edge detection, a complementary ringing detection method is proposed to locate the neglected ringing blocks, and the gradient threshold is adopted to adjust the parameter of 2D fuzzy filter. Experiments are performed on the MPEG-4 sequences. Compared with other methods, the proposed one achieves better detail preservation and artifacts removal performance with lower computational cost.
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| 关 键 词： | 自适应模糊滤波器 视频 图象 编码器 振铃效应 块效应 去除方法 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2007-01-22 |
An adaptive fuzzy filter for coding artifacts removal in video and image |
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| WU Jing YE Xiu-qing GU Wei-kang.An adaptive fuzzy filter for coding artifacts removal in video and image[J].Journal of Zhejiang University Science,2007,8(6):841-848. |
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| Authors: | Wu Jing Ye Xiu-qing Gu Wei-kang |
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| Institution: | (1) Department of Information and Communication Engineering, Zhejiang University, Hangzhou, 310027, China |
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| Abstract: | This paper proposes a new adaptive post-filtering algorithm to remove coding artifacts in block-based video coder. The proposed method concentrates on blocking and ringing artifacts removal. For de-blocking, the blocking strength is identified to determine the filtering range, and the maximum quantization parameter of the image is used to adapt the 1D fuzzy filter. For de-ringing, besides the edge detection, a complementary ringing detection method is proposed to locate the neglected ringing blocks, and the gradient threshold is adopted to adjust the parameter of 2D fuzzy filter. Experiments are performed on the MPEG-4 sequences. Compared with other methods, the proposed one achieves better detail preservation and artifacts removal performance with lower computational cost. |
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| Keywords: | Adaptive fuzzy filter Blocking artifacts Ringing artifacts De-blocking De-ringing |
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