A novel approach of face identification by formulating the pattern recognition problem in terms of linear regression is presented.Using a fundamental concept that patterns from a single-object class lie on a linear subspace,a linear model representing a probe image as a linear combination of class-specific galleries is developed.The inverse problem is solved using the least-squares method and the decision is ruled in favor of the class with the minimum reconstruction error.The proposed Linear Regression Classification (LRC) algorithm falls in the category of nearest subspace classification.The algorithm is extensively evaluated on several standard databases under a number of exemplary evaluation protocols reported in the face recognition literature.A comparative study with state-of-the-art algorithms clearly reflects the efficacy of the proposed approach.For the problem of contiguous occlusion,a Modular LRC approach is proposed,introducing a novel Distance-based Evidence Fusion (DEF) algorithm.Experiments on the FERET and a challenging passport face database shows that the proposed method can achieve better results compared with other common solutions to the human face recognition problem.%线性回归分类(LRC)算法中,借助一个依赖线性子空间的单一对象类模型,开发了一个线性模型,作为特定类库的线性组合来描述探针图像,并且借助于最小二乘法及其为了支持具有最小重构误差的类而制定的决策,解决了逆问题,但是并不能解决连续闭塞问题.基于此,提出了一种新颖的基于近邻子空间分类的识别方法,模块化线性回归分类(MLRC)算法.将LRC算法进行模块化,并且引入了一种基于距离的本征融合(DEF)算法用于决策.在FERET及ORL上的实验表明,与其它几种常用的方法相比较,MLRC算法在处理人脸识别问题上取得了更好的结果.
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