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作者:

Guo, L. (Guo, L..) | Li, X. (Li, X..) | Zhuo, L. (Zhuo, L..) | Qu, P. (Qu, P..)

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Scopus

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. © 2015 IEEE.

关键词:

bilateral filtering; blocking artifacts; DCT domain

作者机构:

  • [ 1 ] [Guo, L.]Signal and Information Processing Lab., Beijing University of Technology, Beijing, China
  • [ 2 ] [Li, X.]Signal and Information Processing Lab., Beijing University of Technology, Beijing, China
  • [ 3 ] [Zhuo, L.]Signal and Information Processing Lab., Beijing University of Technology, Beijing, China
  • [ 4 ] [Qu, P.]Signal and Information Processing Lab., Beijing University of Technology, Beijing, China

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来源 :

Proceedings - 2015 8th International Congress on Image and Signal Processing, CISP 2015

年份: 2016

页码: 829-834

语种: 英文

被引次数:

WoS核心集被引频次: 0

SCOPUS被引频次: 1

ESI高被引论文在榜: 0 展开所有

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中文被引频次:

近30日浏览量: 2

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