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作者:

Guo, Lilei (Guo, Lilei.) | Li, Xiaoguang (Li, Xiaoguang.) | Zhuo, Li (Zhuo, Li.) | Qu, Panling (Qu, Panling.)

收录:

CPCI-S

摘要:

In this paper, a novel blocking artifacts reduction algorithm for low-bit-rate compressed images is proposed. The proposed algorithm adaptively adjusts Discrete Cosine Transform (DCT) coefficients of the shifted blocks to remove the significant blocking artifacts. Then, the bilateral filter is introduced to smooth the subject DCT blocks. The subject DCT block is predicted via the weighted average of overlapping neighboring blocks in DCT domain. The weights are determined according to both the similarity between the subject coded block and the spatial distance of the overlapped neighboring blocks. Image fidelity has been further improved via a quantization constraint. Experimental results illustrated that the proposed method achieves better results in both subjective and objective quality.

关键词:

DCT domain bilateral filtering blocking artifacts

作者机构:

  • [ 1 ] [Guo, Lilei]Beijing Univ Technol, Signal & Informat Proc Lab, Beijing, Peoples R China
  • [ 2 ] [Li, Xiaoguang]Beijing Univ Technol, Signal & Informat Proc Lab, Beijing, Peoples R China
  • [ 3 ] [Zhuo, Li]Beijing Univ Technol, Signal & Informat Proc Lab, Beijing, Peoples R China
  • [ 4 ] [Qu, Panling]Beijing Univ Technol, Signal & Informat Proc Lab, Beijing, Peoples R China

通讯作者信息:

  • [Guo, Lilei]Beijing Univ Technol, Signal & Informat Proc Lab, Beijing, Peoples R China

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来源 :

2015 8TH INTERNATIONAL CONGRESS ON IMAGE AND SIGNAL PROCESSING (CISP)

年份: 2015

页码: 829-834

语种: 英文

被引次数:

WoS核心集被引频次: 1

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ESI高被引论文在榜: 0 展开所有

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