| 用于SA_DCT的短长度DCT快速算法 |
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| 引用本文： | 殷瑞祥,余英林.用于SA_DCT的短长度DCT快速算法[J].华南理工大学学报(自然科学版),2001,29(4):9-12. |
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| 作者姓名： | 殷瑞祥 余英林 |
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| 作者单位： | 华南理工大学电子与信息工程学院, |
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| 基金项目： | 广东省自然科学基金资助项目(950229) |
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| 摘 要： | 适应形状的DCT算法(SA_DCT)已经成为对任意形状图像进行编码的重要工具，SA_DCT是对实现复杂性和编码效率的一种有效折中.为了保证实现复杂性的降低，在SA_DCT中必须使用高效的短长度DCT算法.文中给出了用于MPEG_4的各种短长度(＜8)一维DCT快速算法.该算法不仅具有高的计算效率，而且都具有规则的实现结构.
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| 关 键 词： | 离散余弦变换 复杂性 SA－DCT 短长度DCT算法 图像编码 计算效率 编码效率 |
| 文章编号： | 1000-565X(2001)04-0009-04 |
Fast Short_Length DCT Algorithms in SA_DCT |
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| Yin Rui_xiang,Yu Ying_lin.Fast Short_Length DCT Algorithms in SA_DCT[J].Journal of South China University of Technology(Natural Science Edition),2001,29(4):9-12. |
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| Authors: | Yin Rui_xiang Yu Ying_lin |
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| Abstract: | The shape_adaptive DCT algorithm (SA_DCT) has become an important tool for the coding of arbitrarily shaped image regions in general. SA_DCT is a reasonable trade off among implementation complexity and coding efficiency. To ensure low implementation complexity, it is necessary to use efficient short_length DCT algorithms in the SA_DCT. This paper develops all short_length (<8) one_dimensional DCT algorithms for MPEG_4 applications, which have not only high computation efficiency but also regular implementation structure. |
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| Keywords: | discrete cosine transform algorithm complexity |
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