可分级视频编码中重采样滤波器设计  

Resampling filter design within scalable video coding

作　　者：赵旦峰[1] 王博[1] 杨大伟[1] 赵晓星[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,哈尔滨150001

出　　处：《吉林大学学报（工学版）》2012年第1期199-202,共4页Journal of Jilin University:Engineering and Technology Edition

基　　金：黑龙江省自然科学基金项目(F200828)

摘　　要：针对可分级视频编码中重采样技术的下/上采样滤波器分立设计而导致滤波器性能变差的问题,提出一种匹配的数字图像下/上采样滤波算法。该算法利用已获得的图像下采样滤波器参数,推导出与其对应的上采样滤波器,从而达到两者匹配的目的。这样不仅能够提高视频质量,更可以提升空间可分级的编码性能。与JSVM标准的实验仿真结果相比,匹配的重采样滤波器在性能上有较大提高,其峰值信噪比平均增加1.6dB。A matching resampling filter algorithm was proposed to solve the problem of resampling techniques in scalable video coding.The isolated designing of down-and up-sampling filters leads to poor filtering performance.The proposed algorithm uses the acquired parameters of the down-sampling filter to derive the corresponding un-sampling filter to achieve the matching purpose.It can improve not only the video quality but also the encoding performance of the spatial scalable video coding.Compared to the simulation results of the joint scalable video model（JSVM） under the same condition,the performance of the proposed matching resampling filter algorithm is significantly improved that the peek signal to noise ration（PSNR） is increased by 1.6 dB in average.

关 键 词：通信技术 可分级视频编码 下采样 上采样 重采样 

分 类 号：TN911.73[电子电信—通信与信息系统]