计算机应用 ›› 2012, Vol. 32 ›› Issue (09): 2588-2591.DOI: 10.3724/SP.J.1087.2012.02588

• 图形图像技术 • 上一篇    下一篇

基于直接局部保持投影和尺度不变特征变换的人脸识别方法

李政仪1,2*,冯贵玉3,赵龙2   

  1. 1.长沙民政职业技术学院 软件学院,长沙 410004;
    2.国防科学技术大学 计算机学院,长沙 410073;
    3.北京图形研究所,北京 100029
  • 收稿日期:2012-03-05 修回日期:2012-05-07 发布日期:2012-09-01 出版日期:2012-09-01
  • 通讯作者: 李政仪
  • 作者简介:李政仪(1979-),女,湖南石门人,讲师,硕士,主要研究方向:模式识别、人机交互; 冯贵玉(1979-),男,山东滕州人,工程师,博士,主要研究方向:模式识别; 赵龙(1959-),男,江苏扬州人,教授,主要研究方向:计算机仿真、分布式战场。
  • 基金资助:

    国家自然基金资助项目(61005084);教育部高等教育博士点基金资助项目(20114307120032);湖南省教育厅科技项目(11C0076)

Face recognition method based on DLPP-SIFT

LI Zheng-yi1,2*,FENG Gui-yu3,ZHAO Long2   

  1. 1.School of Software,Changsha Social Work College,Changsha Hunan 410004,China;
    2.College of Computer,National University of Defense Technology,Changsha Hunan 410073,China;
    3.Beijing Graphics Research Institute,Beijing 100029,China
  • Received:2012-03-05 Revised:2012-05-07 Online:2012-09-01 Published:2012-09-01

摘要: 尺度不变特征变换(SIFT)算法提取的人脸特征具有一定的鲁棒性,但存在数据维数过高和计算过于复杂的问题。为此,提出一种基于直接局部保持投影—尺度不变特征变换(DLPP-SIFT)的人脸识别算法。首先采用SIFT算法进行特征提取,然后结合子空间方法局部保持投影(LPP)进行降维,利用直接对角化方法求取特征矩阵,解决了LPP的奇异值问题。在ORL和FERET人脸库的实验结果表明,DLPP-SIFT算法可显著减少计算复杂度和特征匹配时间,与SIFT、主成分分析(PCA)-SIFT、LPP-SIFT相比,具有更好的鲁棒性。

关键词: 人脸识别, 子空间, 局部保持投影, 尺度不变特征变换

Abstract: The Scale Invariant Feature Transform (SIFT) algorithm is robust to the feature extraction of face image. However, the feature data derived by SIFT is of high dimension, and is difficult to be handled. Therefore, a Direct Locality Preserving Projections-SIFT (DLPP-SIFT) algorithm was proposed. In the algorithm, SIFT was used to extract feature, and the subspace method with Locality Preserving Projections (LPP) was utilized for dimension reduction. This algorithm solved locality preserving problem via simultaneous diagonalization; therefore, the singularity of the matrix was avoided. The experiments on ORL and FERET face databases show that the proposed algorithm reduces the computation complexity and matching time of features successfully, and is more robust than SIFT, Principal Component Analysis (PCA)-SIFT and LPP-SIFT methods.

Key words: face recognition, subspace, Locality Preserving Projection (LPP), Scale Invariant Feature Transform (SIFT)

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