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Palmprint recognition uses the principal lines of the palm skins to recognition applications. Compared with the face images, palm images have a high reliability and stability. Furthermore, the palm images are robust to the variation of the facial expression, post and illumination. The Non Subsampled Contourlet Transform has characteristics of good multiresolution, shift-invariance and high directionality...
For nonlinear discrimination analysis technique, there are some key points worthy of further research. One is finding an effective rule to select appropriate kernel function parameter for different sample sets. Another is providing a simple and efficient solution for the singularity problem of within-class scatter matrix. In this paper, we focus on these two points and address a regularized nonlinear...
A nonlinear DCT discriminant feature extraction approach for face recognition is proposed. First, we analyze the nonlinear discriminabilities of DCT frequency bands and select appropriate bands. Second, we extract nonlinear discriminant features from the selected DCT bands by presenting a new kernel discriminant method, i.e. generalized kernel discriminative common vector (KDCV) method. The experimental...
A novel nonlinear feature extraction and recognition approach which is based on improved 2D Fisherface plus Kernel discriminant analysis is proposed. We provide an improved 2D Fisherface method that designs a new strategy to select appropriate 2D principal components and discriminant vectors, then we use 2D features to perform the Kernel discriminant analysis. The nearest neighbor classifier with...
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