| 可实现ROI功能的改进精细伸缩视频编码 |
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| 引用本文： | 徐向民,陈小川,周丰乐,全晓臣,陈育.可实现ROI功能的改进精细伸缩视频编码[J].桂林电子工业学院学报,2006,26(2):89-92. |
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| 作者姓名： | 徐向民 陈小川 周丰乐 全晓臣 陈育 |
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| 作者单位： | 华南理工大学电子与信息学院,广东广州510640 |
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| 基金项目： | 广东省自然科学基金项目（31449,05100514） |
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| 摘 要： | 提出一种基于子带编码的可实现视频ROI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ROI功能，利用SPIHT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ROI具有较好的效果，比原来的FGS增强层编码方法具有更高的编码效率。
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| 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 |
| 文章编号： | 1001-7437（2006）02-0089-04 |
| 收稿时间： | 2005-12-06 |
Improved code method for FGS with function of ROI |
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| XU Xiang-min, CHEN Xiao-chuan, ZHOU Feng-le, QUAN Xiao-chen, CHEN Yu.Improved code method for FGS with function of ROI[J].Journal of Guilin Institute of Electronic Technology,2006,26(2):89-92. |
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| Authors: | XU Xiang-min CHEN Xiao-chuan ZHOU Feng-le QUAN Xiao-chen CHEN Yu |
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| Affiliation: | Dept. of Electronics and Information, SCUT, Guangzhou 510640, China |
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| Abstract: | 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. |
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| Keywords: | FGS DCT ROI SPIHT subband coding |
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