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基于隐马尔可夫模型(HMM)的人脸表情识别 被引量:7
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作者 王冲 李一民 杨霞 《通信技术》 2007年第11期359-361,共3页
人脸表情识别是目前的研究热点。文中介绍了人脸表情识别的过程,给出了基于隐马尔可夫模型(HMM)的人脸表情识别方法。通过分析人脸表情的变化情况,利用二维离散余弦变换(2D-DCT)提取脸部表情特征,经过大样本训练构建HMM模型来识别图像... 人脸表情识别是目前的研究热点。文中介绍了人脸表情识别的过程,给出了基于隐马尔可夫模型(HMM)的人脸表情识别方法。通过分析人脸表情的变化情况,利用二维离散余弦变换(2D-DCT)提取脸部表情特征,经过大样本训练构建HMM模型来识别图像中的人脸表情。实验结果表明该方法是一种高效的面部表情识别方法。 展开更多
关键词 人脸表情识别 隐马尔可夫模型 表情特征提取 二维离散余弦变换 表情训练识别
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Facial Expression Recognition by Split Rectangle Based Adaboost
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作者 Yong-hee HONG Young-joon HAN Hern-soo HAHN 《Journal of Measurement Science and Instrumentation》 CAS 2011年第1期17-20,共4页
The facial expression recognition systn using the Ariaboost based on the Split Rectangle feature is proposed in this paper. This system provides more various featmes in increasing speed and accuracy than the Haarolike... The facial expression recognition systn using the Ariaboost based on the Split Rectangle feature is proposed in this paper. This system provides more various featmes in increasing speed and accuracy than the Haarolike featrue of Viola, which is commonly used for the Adaboost training algorithm. The Split Rectangle feature uses the nmsk-like shape composed with 2 independent rectangles, instead of using mask-like shape of Haar-like feature, which is composed of 2 --4 adhered rectangles of Viola. Split Rectangle feature has less di- verged operation than the Haar-like feaze. It also requires less oper- ation because the stun of pixels requires ordy two rectangles. Split Rectangle feature provides various and fast features to the Adaboost, which produrces the strong classifier with increased accuracy and speed. In the experiment, the system had 5.92 ms performance speed and 84 %--94 % accuracy by leaming 5 facial expressions, neutral, happiness, sadness, anger and surprise with the use of the Adaboost based on the Split Rectangle feature. 展开更多
关键词 split rectangle feature Haar-like discrete adaboost facial expression recognition pattern recognition
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