H.264/AVC解码器中简单有效的块化算法

Jung-Ah Choi, Yo-Sung Ho
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引用次数: 3

摘要

H.264/AVC中基于块的编码在块边界处产生不连续。块伪影被认为是基于块的视频编码中最明显的伪影。在H.264中,使用去块滤波器来减少这种阻塞伪影。然而,它需要大量的复杂性,它占用了解码器的计算复杂度的三分之一。在本文中,我们提出了一种简单而高效的去块算法。它由模式判定和滤波组成。对于模态判定,我们定义了三种不同的模态:弱模态、强模态和特殊模态。在滤波方面,我们设计了强模和特殊模两种新的滤波器。实验结果表明,与H.264中的去块滤波器相比,所提出的去块算法具有相当的客观质量、更好的主观视频质量和更低的计算复杂度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Simple and efficient deblocking algorithm for H.264/AVC decoder
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.
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