Human Identi cation versus Expression Classi cation via Bagging on Facial Asymmetry
Human Identi cation versus Expression Classi cation via Bagging on Facial Asymmetry
复制标题
通过面部不对称性进行装袋的人类识别与表情分类
DOI:
--
复制
发表时间:
2003
期刊:
影响因子:
--
通讯作者:
S. Mitra
中科院分区:
文献类型:
--
作者:
Yanxi Liu;S. Mitra
We demonstrate a dual usage of quanti ed facial asymmetry for (1) human identi cation under expression variations and (2) expression classi cation across di erent human subjects. Our experiments show the e ectiveness of using statistical bagging and feature subspace selection BEFORE applying classi ers such as Linear Discriminant Analysis. This preprocessing allows the same type but di erent dimensions of image features to be discriminative for two seemingly con icting classi cation goals. Statistically signi cant improvements are found when facial asymmetry features are combined into classical classi ers.