可实现ROI功能的改进精细伸缩视频编码  

Improved code method for FGS with function of ROI

作　　者：徐向民[1] 陈小川[1] 周丰乐[1] 全晓臣[1] 陈育[1] 

机构地区：[1]华南理工大学电子与信息学院,广东广州510640

出　　处：《桂林电子工业学院学报》2006年第2期89-92,共4页Journal of Guilin Institute of Electronic Technology

基　　金：广东省自然科学基金项目(31449;05100514)

摘　　要：提出一种基于子带编码的可实现视频RO I功能的改进精细可伸缩视频编码方法。在增强层编码中,对DCT残差系数重排形成小波子带,通过对系数位平面进行最大提升法实现RO I功能,利用SP IHT编码方法消除数据冗余。实验表明改进增强层编码方法实现RO I具有较好的效果,比原来的FG S增强层编码方法具有更高的编码效率。An improved code method based on subband coding is proposed/or FGS with the function of ROI in this paper. In encoding/or the enhancement layer,residue coefficients are first reordered to form subbands of wavelet. Bitplanes of the coefficients are then implemented through the max-shift method to achieve the function of ROI. Lastly, the SPIHT coding method is used to eliminate the data redundancies. Experiment results show that the proposed method can achieve a good function of ROI and that it has higher coding efficiency than that of the original FGS enhancement layer.

关 键 词：精细可伸缩编码 离散余弦变换 感兴趣区域 SPIHT 子带编码 

分 类 号：TN919.8[电子电信—通信与信息系统]