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초록
In this paper, we propose a selective deblocking algorithm that reduces block discontinuities in DCT domain. Our algorithm applies a deblocking procedure to each line of adjacent 3 blocks, so the block is divided into several line vectors. There are three Low Pass filters that are applied differently to 1×24 DCT values according to each condition of adjacent 3 vectors for conserving image details, and we use a transform table between different dimension DCTs (1×8 and 1×24 DCT) for reducing a computational cost. The experimental results show that the proposed algorithm makes good results on an improvement of subjective image quality and a computational efficiency.
키워드
Blocking artifacts; DCT domain; Post-processing; Transform table; A-transform; Blocking artifacts; Computational costs; DCT domain; Deblocking; Deblocking algorithm; Post processing; Subjective image quality; Algorithms; Computer graphics; Computer vision; Image quality; Visualization; Discrete cosine transforms
- 제목
- Selective deblocking method using a transform table of different dimension DCT
- 저자
- Lim, Taehwan; Ryu, Jiman; Jeong, Jechang
- 발행일
- 2009-02
- 유형
- Conference Paper
- 저널명
- 17th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision, WSCG'2009 - In Co-operation with EUROGRAPHICS, Full Papers Proceedings
- 페이지
- 41 ~ 48