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基于稀疏表示的遮挡人脸表情识别方法*

, PP. 708-712

Keywords: 稀疏表示,遮挡字典,遮挡表情识别

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Abstract:

用基于稀疏表示的分类方法识别遮挡人脸表情时,遮挡字典不具有冗余度且身份特征易干扰表情分类.针对此问题,文中提出一种基于稀疏表示的遮挡人脸表情识别方法.该方法首先通过对图像多级分块得到具有冗余度的遮挡字典,然后通过稀疏分解求出待测图像的稀疏表示系数,最后在待测图像所在的子空间内实现表情类别判断.该方法使待测图像的分解系数变得更稀疏,同时避免身份特征对表情分类的干扰.在Cohn-Kanade和JAFFE人脸库上的遮挡表情识别实验表明,该方法对遮挡人脸的表情识别具有较强的鲁棒性.

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