六角变换方法在视频编码中的应用  

Hexagonal Transform Method Applied in Video Coding

作　　者：程武[1] 赵海武[1,2] 李亚珂[1] 王国中[1,2] 腾国伟[1,2] 

机构地区：[1]上海大学通信与信息工程学院,上海200072 [2]上海国茂数字技术有限公司,上海201204

出　　处：《电视技术》2012年第19期32-34,39,共4页Video Engineering

基　　金：浙江省自然科学基金项目(ZJNSF Y12F010100)

摘　　要：介绍了一些有关DCT及其快速算法的关键技术,提出了六角变换方法及其应用于视频编码的近似整数实现。实验结果表明,六角变换方法不仅具有相比浮点DCT实现复杂度低、解码端无误差累积的优点,而且能提供相比其他整数近似变换更高的视频编码效率。The technology of video coding has dramatically promoted a wider application of digital media, while transform coding is one of the key technologies in video compression, which determines the coding efficiency and increasingly becomes a research focus especially in current popular coding standards such as H.264/AVC, AVS and HEVC. It is important to select an excellent transform method as transform module has a direct impact on the efficiency of video codec. This paper proposes a hexagonal transform method as well as its integer approximation applied in video coding. Experiments show that it achieves a higher performance.

关 键 词：视频编码 离散余弦变换 六角变换 整数变换 

分 类 号：TN919.81[电子电信—通信与信息系统]