H.26L压缩编码中去块滤波器的实现

Realization of Deblock Filter in H.26L

在对H.26L视频压缩编码分析和研究的基础上,对其中的去块滤波器进行了深入剖析,以VC++为基础对其进行了软件实现.使视频图像数据经过去块滤波器后,更有效地消除了由于基于块的DCT变换和运动补偿算法而对码流形成的方块效应.去块滤波器的使用,提高了在低码率的情况下图像传输的主观质量,获得了较为满意的结果,具有一定的实用价值.

Based on the study on and analysis of the H. 26L compressing code, this paper examined a deblock filter in detail. Using VC ＋ ＋ program, the deblock filter has been realized. The cubic effects, which formed from both the DCT-based on the block and the algorithm of sport compensation, have been eliminated effectively when video stream passes the deblock filter. Deblock filter, therefore, improves the quality of video transmission in the low bit rate wireless channel. The research results show that the method has useful practice value.