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一种新型非线性自适应滤波器 被引量:1
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作者 刘永 张晓 +1 位作者 梁健 吴文婷 《南开大学学报(自然科学版)》 CAS CSCD 北大核心 2005年第1期57-59,78,共4页
本文利用人工神经网络的结构和算法构造了新型滤波器,起到非线性和自适应的滤波效果.
关键词 数字滤波器 神经网络 训练和算法
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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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