多对称性快速自适应插值滤波算法  

Fast multi-symmetry adaptive interpolation filter algorithm

作　　者：李宏伟[1] 张捷[1] 吴成柯[1] 宋锐[1] 

机构地区：[1]西安电子科技大学ISN国家重点实验室,西安710071

出　　处：《吉林大学学报（工学版）》2011年第5期1485-1490,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(60802076);高等学校创新引智计划项目(B08038);长江学者和创新团队发展计划项目(PCSITR)

摘　　要：提出了一种多对称性快速自适应插值滤波算法。该算法首先根据区域对称性,在多种的对称性插值滤波器中做出了初始选择,然后按照简化率失真模型计算出一种最优的对称性插值滤波器,最终大幅度地提高了编码性能。仿真结果表明:与复杂对称性自适应插值滤波算法相比,该算法在大幅度减少控制编码时间的同时,进一步提高了重建图像的峰值信噪比值,并降低了输出码率。A Fast Multi-Symmetry Adaptive Interpolation Filter（FMS-AIF） algorithm was proposed.First,an initial subset of symmetry interpolation filters was picked out according to regional symmetric properties.Then,the most optimal symmetry interpolation filter was determined by the rate distortion model.Thus the encoding quality of the proposed algorithm was significantly improved.Simulation results show that compared with Flexible Symmetry Adaptive Interpolation Filter（FS-AIF） algorithm,the coding time is greatly reduced,the Peak Signal-to-Noise Ratio（PSNR） is further increased and the bit rate is reduced in this proposed FMS-AIF algorithm.

关 键 词：通信技术 多对称性 自适应 插值滤波器 率失真 

分 类 号：TN919.81[电子电信—通信与信息系统]