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    人脸的层次化描述模型及识别研究

    THE LAYERED FACE REPRESENTATION MODEL AND FACE RECOGNITION

    • 摘要: 人脸自动识别是一个困难但有重要意义的工作.文中提出了一种基于人脸层次化描述的识别方法.该方法首先对人脸进行快速准确的特征定位及标准化,然后采用主元分析神经网络分别对定位的人脸及其特征区域进行最佳特征提取,从而得到人脸在低分辨率和较高分辨率上的两层特征描述用以识别,具有识别率高、特征数据量适中、可用于大量人像识别等特点.此方法在1300 幅人像上进行了测试,结果表明其在人脸转动、表情变化或人脸未经训练等情况下仍可以很好地识别.

       

      Abstract: Automatic human face recognition is a difficult but significant problem. A novel method for face recognition based on layered face representation is put forward in this paper. The method first locates the face and key facial features including eyes, nose, and mouth in image quickly, and then normalizes that face depending on the center location of eyes. Then PCA neural network is used to extract characteristics of the located faces and facial features. This can be viewed as a layered representation of faces: where a coarse and low\|resolution description of the whole head is augmented by additional high\|resolution details in terms of salient facial features. This method has been tested on 1300 facial images and shows better performance than traditional PCA for face recognition, especially when head poses and expressions are changed.

       

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