| 一种新的基于DCT变换的人脸表征 |
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| 引用本文： | 孙永宣,何柯峰,胡良梅. 一种新的基于DCT变换的人脸表征[J]. 合肥工业大学学报(自然科学版), 2006, 29(11): 1396-1399 |
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| 作者姓名： | 孙永宣 何柯峰 胡良梅 |
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| 作者单位： | 合肥工业大学,计算机与信息学院,安徽,合肥,230009;合肥工业大学,计算机与信息学院,安徽,合肥,230009;合肥工业大学,计算机与信息学院,安徽,合肥,230009 |
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| 基金项目： | 合肥工业大学校科研和教改项目 |
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| 摘 要： | DCT变换是一种与KL变换非常相似的次最优变换算法.由于它独立于信号量,并且在维数下降、特征提取方面都非常接近经典的KL变换算法,因此DCT变换已经适用于模式识别领域.文章针对人脸图像,基于DCT变换,提出了一种融合整体DCT变换和分块加权DCT变换提取人脸图像的整体特征系数和局部特征系数,用于人脸表征的新方法.实验结果表明,本方法无论是在识别率还是在时间性能方面都优于传统的KL变换.
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| 关 键 词： | DCT变换 人脸表征 人脸识别 特征提取 |
| 文章编号： | 1003-5060(2006)11-1396-04 |
| 修稿时间： | 2006-03-24 |
A new face representation algorithm based on discrete cosine transform |
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| SUN Yong-xuan,HE Ke-feng,HU Liang-mei. A new face representation algorithm based on discrete cosine transform[J]. Journal of Hefei University of Technology(Natural Science), 2006, 29(11): 1396-1399 |
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| Authors: | SUN Yong-xuan HE Ke-feng HU Liang-mei |
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| Abstract: | Discrete cosine transform(DCT) is a hypo-optimal transform approach similar to KL transform.As it is independent on signal quantity and similar to classical KL transform in dimension reduction and features extraction,it has been widely used in pattern recognition.A new face representation algorithm is proposed,which fuses global facial features and local facial features based on global DCT and local weighted DCT.Experiment results demonstrate that this algorithm is better than KL transform in the computational speed and the recognition rate. |
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| Keywords: | discrete cosine transform face representation face recognition features extraction |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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