Title :
Simple and efficient deblocking algorithm for H.264/AVC decoder
Author :
Choi, Jung-Ah ; Ho, Yo-Sung
Author_Institution :
Gwangju Inst. of Sci. & Technol., Seoul
Abstract :
Block-based coding in H.264/AVC creates discontinuities at block boundaries. The blocking artifact is regarded as the most visible artifact in block-based video coding. In H.264, a deblocking filter is used to reduce such a blocking artifact. However, it requires a significant amount of complexity and it occupies one-third of the computational complexity of the decoder. In this paper, we propose a simple and efficient deblocking algorithm. It consists of mode decision and filtering. For mode decision, we define three different modes: weak mode, strong mode, and special mode. For filtering, we design two new filters for strong mode and special mode. Experimental results show that the proposed deblocking algorithm provides comparable objective quality, better subjective video qualities, and lower computational complexity, compared to the deblocking filter in H.264.
Keywords :
block codes; computational complexity; decoding; video coding; H.264/AVC decoder; block-based coding; computational complexity; deblocking algorithm; deblocking filter; video coding; Automatic voltage control; Computational complexity; Decoding; Discrete cosine transforms; Filtering; Filters; Humans; IEC standards; ISO standards; Video coding; H.264/AVC; deblocking filter; video coding;
Conference_Titel :
Systems, Signals and Image Processing, 2008. IWSSIP 2008. 15th International Conference on
Conference_Location :
Bratislava
Print_ISBN :
978-80-227-2856-0
Electronic_ISBN :
978-80-227-2880-5
DOI :
10.1109/IWSSIP.2008.4604459