基于多方向Gabor特征图稀疏表示的鲁棒人脸识别方法

Robust Face Recognition via Sparse Representation of Multi-Directional Gabor Feature Maps

  • 摘要: 为提高对光照、表情、姿态等可变因素的鲁棒性,提出一种基于多方向Gabor特征图稀疏表示的人脸识别方法.对人脸图像进行多方向多尺度Gabor变换,然后将同一方向不同尺度的Gabor特征进行融合得到多方向特征图,再对每个方向的融合特征图提取Gist特征并赋予自适应权重,接着将所有方向特征图的自适应加权Gist特征串联构成人脸图像特征向量,最后利用稀疏表示分类方法实现人脸识别.实验结果表明,本文算法在Yale、ORL和Extended Yale B人脸数据库上的平均识别率分别达到99.8%、99.7%和100.0%.

     

    Abstract: In order to improve the robustness to variable factors such as illumination, expression, and pose, a novel face recognition method based on sparse representation with multi-directional Gabor feature maps was proposed in this paper. Firstly, multi-directional and multi-scale Gabor transforms were performed on face image, and the obtained Gabor features with different scales in the same direction were fused to generate multi-directional feature maps. Then, Gist features were extracted and adaptive weights were assigned to them for the fused feature maps in each direction. The adaptive-weighted Gist features of all directional feature maps were cascaded to form feature descriptors of face image. Finally, face recognition was implemented with a sparse representation classification method base on the face feature descriptors. Experimental results show that the average recognition rates of the proposed algorithm on Yale, ORL and Extended Yale B face databases are 99.8%, 99.7% and 100.0% respectively.

     

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